38.74988 38.84988 -122.85588 -122.75588 UC/JEPS: Consortium Search Results
Search Results — 903 specimen records retrieved (903 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
 Records are made available under the CCH Data Use Terms.

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  UC1193405  Acer macrophyllum G. W. Tourtillott 1950-5-10 18 Sonoma one mi e Geysers Hotel; Quad. 60B4, e of Geysers Hotel 609 Comment
  UCD160830  Achillea millefolium James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3368 Sonoma Section 10, the Geysers. (Exact location unknown. Elevation and coordinates estimated by label maker.) 388 Comment
  UCD151201  Achnatherum lemmonii James A. Neilson Jr. 1974-7-10 2818 Sonoma Mayacmas Mountains, 1/4 mile south of Geyser Rock, west of Whispering Pines, northeast Sonoma County. (Elevation estimated using Google Earth by label maker.) 1082 Comment
  UCD151098  Acmispon James A. Neilson Jr. 1974-6-1 s.n. Sonoma Mayacmas Mountains, 1/4 mi. south of Geyser Rock area, east Sonoma County. (Elevation estimated by label maker using Google Earth.) 1027 Comment
  UCD160437  Acmispon wrangelianus James A. Neilson Jr. 1975-5-14 3447 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160464  Acmispon wrangelianus James A. Neilson Jr. 1975-5-23 3328 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  HSC98397  Adenostoma fasciculatum R. Spellenberg 1964-6-15 404 Sonoma 5 mi. W of The Geysers on road from Geyserville Comment
  UC479340  Adiantum jordanii Marcus E. Jones, A. M. 1931-7-5 29165 Sonoma The Geysers Comment
  UCD160903  Adiantum jordanii James A. Neilson Jr.; Teresa A. Sholars 1975-6-29 3351 Sonoma Section 10, ca. 2 miles west of the Geysers Resort. (Exact location unknown. Coordinates and elevation estimated by label maker.) 396 Comment
  UCD151194  Agastache urticifolia James A. Neilson Jr. 1974-7-10 2829 Sonoma Mayacmas Mountains, road to PG and E geothermal unit 9. (Elevation estimated using Google Earth by label maker.) 975 Comment
  UCD158927  Agoseris James A. Neilson Jr. 1975-4-28 s.n. Lake Mayacmas Mountains, North edge of Francisco Property. High Valley Creek. (Elevation estimated using Google Earth by label maker.) 853 Comment
  UCD158774  Agoseris grandiflora James A. Neilson Jr. 1974-6-1 3558 Sonoma Mayacmas Mountains, 1/4 mi. south of Geyser Rock area, east Sonoma County. (Elevation estimated by label maker using Google Earth.) 1027 Comment
  UCD159721  Agoseris grandiflora James A. Neilson Jr.; Teresa A. Sholars 1975-3-27 3298 Lake Mayacmas Mountains, Caldwell Pines, ca. 3 1/2 miles west of Bottle Rock Road, border of Lake and Sonoma counties. (Elevation estimated by label maker using Google Earth.) 975 Comment
  UCD160133  Agoseris grandiflora James A. Neilson Jr. 1973-6-7 2945 a Sonoma Mayacmas Mountains. The Geysers. Big Geysers. Site IV-G. (Elevation and exact location estimated by label maker.) 365 Comment
  UCD160822  Agoseris grandiflora James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3374 Sonoma Section 10, along Geysers Road, ca. 1 mile west of the Geysers Resort. (Exact location unknown. Elevation and coordinates estimated by label maker.) 396 Comment
  UCD160829  Agoseris grandiflora James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3273 Sonoma Section 10, the Geysers. (Exact location unknown. Elevation and coordinates estimated by label maker.) 388 Comment
  UCD160854  Agoseris grandiflora James A. Neilson Jr.; Teresa A. Sholars 1975-6-25 3275 Sonoma Mayacmas Mountains, adjacent to Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD158808  Agoseris heterophylla James A. Neilson Jr. 1974-3-27 2943 Sonoma Mayacmas Mountains. Big Geysers. (Elevation estimated using topo map by label maker.) 548 Comment
  UCD160396  Agoseris heterophylla James A. Neilson Jr. 1975-5-14 3575 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160700  Agoseris heterophylla James A. Neilson Jr. 1975-6-5 3227 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UC29384  Agoseris retrorsa H. N. Bolander 1864-1 3956 Sonoma at Geysers Comment
  UCD160622  Agoseris retrorsa James A. Neilson Jr. 1975-6-5 3341 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD151135  Agrostis James A. Neilson Jr. 1973-6-6 2986 Sonoma Mayacmas Mountains. The Geysers. Site A. (Elevation estimated using Google Earth by label maker.) 441 Comment
  SD180634  Agrostis exarata Beecher Crampton 1964-8-18 7150 Sonoma Northeast Sonoma County, The Geysers, 12 miles (in direct line) east of Cloverdale, ca. Ao mile east of Geyser Resort area, Big Sulfur Creek. Comment
  UCD161760  Agrostis exarata James A. Neilson Jr. 1975-7-8 3393 Sonoma Mayacmas Mountains; western portion of Geyser Rock.(Coordinates and elevation estimated by label maker.) 1066 Comment
  UCD32829  Agrostis exarata Beecher Crampton 1964-8-18 7150 Sonoma N.E. Sonoma County, The Geysers, 12 miles (in direct line) east of Cloverdale, ca. 1/4 mile east of Geyser Resort area, Big Sulfer Creek. Comment
  UCD52284  Agrostis exarata Beecher Crampton 1964-8-18 7150 Sonoma N.E. Sonoma County: The Geysers, Big Sulphur Creek. Comment
  HSC9996  Agrostis microphylla Leo Koch 1940-4-22 837 Sonoma Above Sulfur Creek Geysers. Comment
  UC1146691  Agrostis microphylla Freed W. Hoffman 1947-4-10 1944 Sonoma The Geysers North Coast Ranges, The Geysers Comment
  UCD33495  Agrostis microphylla Beecher Crampton 1969-7-14 8494 Sonoma Sonoma County, The Geysers, 12 miles (direct line) east of Colverdale. 493 Comment
  UCD53044  Agrostis microphylla Freed W. Hoffman 1947-4-10 1944 Sonoma Vernal pool at The Geysers. Comment
  UCD53048  Agrostis microphylla Beecher Crampton 1969-7-14 8494 Sonoma The Geysers, 12 miles (in direct line) east of Cloverdale. Comment
  UCD66731  Agrostis microphylla Leo Koch 1940-4-22 837 Sonoma Above Sulfur Creek Geysers. Comment
  UCD150927  Agrostis stolonifera James A. Neilson Jr. 1970-8-19 2851 Lake County Line Ridge. 0.5 miles N of Geyser Rock. (Elevation estimated by label maker using Google Earth.) 1036 Comment
  UCD160717  Allium amplectens James A. Neilson Jr. 1975-5-23 3310 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD151238  Allium falcifolium James A. Neilson Jr. 1974-3-30 2725 Sonoma Mayacmas Mountains, county line ridge, 1/4 mile north of Geyser Rock. (Elevation estimated using Google Earth by label maker.) 1005 Comment
  UCD160465  Allophyllum divaricatum James A. Neilson Jr. 1975-5-23 3316 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  JEPS129122  Alopecurus saccatus Jake Ruygt 2015-5-2 6086 f Napa West of Buck Mountain near Nevada Creek. Knoxville 7.5' Quad. Comment
  UCD160619  Amelanchier utahensis James A. Neilson Jr. 1975-6-5 3240 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD160397  Amsinckia intermedia James A. Neilson Jr. 1975-5-14 3576 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160321  Amsinckia menziesii James A. Neilson Jr. 1975-5-14 3461 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160840  Anagallis arvensis James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3471 Sonoma Section 10, ca. 1.5 miles west of the Geysers Resort. (Exact location unknown. Elevation and coordinates estimated by label maker.) 396 Comment
  POM188278  Andropogon glomeratus Marcus E. Jones 1931-7-5 92909 Sonoma The Geysers. Comment
  UCD56056  Andropogon glomeratus Walter Knight; Irja Knight 1968-1-1 2265 Sonoma on Sulphur Creek, Geysers Resort. Comment
  CAS-BOT-BC137817  Andropogon glomeratus var. pumilus Helen D. Geis 1902-8-1 568 Sonoma The Geysers. Comment
  CAS-BOT-BC137818  Andropogon glomeratus var. pumilus Walter Knight; Irja Knight 1968-1-1 2265 Sonoma Across footbridge from old bathouse on Sulphur Creek. Geysers Resort. Comment
  UC1011024  Andropogon glomeratus var. pumilus Milo S. Baker Apr 1936 251 Sonoma Sonoma Co. Geysers Comment
  UC1146605  Andropogon glomeratus var. pumilus Freed W. Hoffman 1942-6-13 2046 Sonoma around Hot Springs the Geysers; North Coast Ranges, , the Geysers Comment
  UCD161437  Angelica James A. Neilson Jr. 1975-7-8 3390 Lake Mayacmas Mountains; there are two conflicting sets of location notes for this specimen. In the Flora of the Mayacmas Mtns., Neilson cited the following location: 1/4 mile northeast of Geyser Rock. The notes on the specimen itself say: western portion of Geyser Rock, west of Alder Creek, west Lake County (he must have meant eastern portion of Geyser Rock, or he would have been in Sonoma County). (Coordinates and elevation estimated by label maker.) 1089 Comment
  CAS-BOT-BC271442  Anisocarpus madioides F. H. Utech; W. Knight; I. Knight 1986-5-15 86 -164 Sonoma The Geysers, ca 14.0 mi ESE of Preston and US Hwy 101 on Geysers Road 330 Comment
  POM187931  Anthemis cotula Marcus E. Jones 1931-7-5 29120 Sonoma The Geysers. Comment
  UCD56141  Anthoxanthum aristatum M. S. Baker 1936-4-1 248 Sonoma highway north of Windsor. Comment
  UCD151039  Anthoxanthum odoratum James A. Neilson Jr. 1972-6-5 3246 Lake Lake County. High Valley Creek. Francisco Property. At Hunting Camp. (Elevation estimated from Google Earth by label maker.) 762 Comment
  UCD151205  Anthoxanthum odoratum James A. Neilson Jr. 1974-7-10 2819 Sonoma Mayacmas Mountains, 1/4 mile south of Geyser Rock. (Elevation estimated using Google Earth by label maker.) 1082 Comment
  UCD160402  Anthoxanthum odoratum James A. Neilson Jr. 1975-5-14 3562 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD167561  Anthoxanthum odoratum James A. Neilson Jr. 1976-6-18 s.n. Sonoma Mayacmas Mountains. 1/2 mile west of Black Hawk Ranch on Squaw Creek. (Exact location unkown. Coordinates estimated by label maker. Black Hawk Ranch location not found. Location georeferenced at the end of Ottobani Ridge between Big Sulphur Creek and Squaw Creek because neilson collected in that area on 18 June 1976.) Comment
  POM188144  Antirrhinum vexillocalyculatum subsp. vexillocalyculatum Marcus E. Jones 1931-7-5 28810 Sonoma The Geysers. Comment
  UC479120  Antirrhinum vexillocalyculatum subsp. vexillocalyculatum Marcus E. Jones, A. M. 1931-7-5 28810 Sonoma The Geysers Comment
  UC717979  Antirrhinum vexillocalyculatum subsp. vexillocalyculatum David D. Keck 1944-7-11 5510 Sonoma s bank The Geysers; Mayacamas Range Comment
  UCD158761  Aralia californica James A. Neilson Jr. 1974-7-10 2809 Lake Mayacmas Mountains, Cobb Mountain. Alder and Lee Creeks; west of Whispering Pines (on Highway 175). (Elevation estimated by label-maker using topo map). 792 Comment
  RSA102086  Arbutus menziesii John H. Redfield 1872-8-28 213 Sonoma Geyser Valley Comment
  UCD168049  Arceuthobium campylopodum James Neilson 1981-7-1 4044 Sonoma Mayacmas Mountains, entrance to Unit 15. (Exact location unknown. Coordinates estimated by label maker. Unit 15 is PG and E Power Plant 15 (retired).) Comment
  CAS-BOT-BC56915  Arctostaphylos Walter Knight; Irja Knight 1968-1-1 2267 Sonoma Geysers Resort Comment
  UCSB11337  Arctostaphylos canescens Neuns, R. 1950-5-23 Lake North slope of Cobb Mt., 2 miles west of Cobb 1249 Comment
  CDA30999  Arctostaphylos canescens subsp. canescens D. G. Kelch, Troy McGregor 2010-8-22 10 .348 Sonoma Nr Peak of Geyser Peak Rd. 0 Comment
  CAS-BOT-BC23286  Arctostaphylos glandulosa subsp. cushingiana Walter Knight; Irja Knight 1986-3-23 5367 Sonoma On Geysers Road near Mercuryville at junction of private road to Sulphur Peak. 822 Comment
  CAS-BOT-BC24677  Arctostaphylos glandulosa subsp. glandulosa Walter Knight; Irja Knight; Steve Edwards 1986-3-23 5366 Sonoma On Geysers Rd. near Mercuryville at junction of private road ro Sulphur Peak. 822 Comment
  CAS-BOT-BC24678  Arctostaphylos glandulosa subsp. glandulosa Walter Knight; Irja Knight 1963-12-27 472 Sonoma Summit Pine Flat Road. Comment
  CAS-BOT-BC46150  Arctostaphylos glandulosa subsp. glandulosa James McMurphy 1909-5-29 s.n Sonoma Grade, ridge south of the Geysers Comment
  UCD151132  Arctostaphylos manzanita James A. Neilson Jr. 1973-6-6 2950 Sonoma Mayacmas Mountains. The Geysers. Site III. [Location of Site III at The Geysers taken from Neilson 3115 which gave the Township/Range of the location. Elevation and coordinates estimated by label maker.] 731 Comment
  UCD160759  Arctostaphylos manzanita James A. Neilson Jr.; Teresa A. Sholars 1974-6-6 3258 Sonoma Mayacmas Mountains, ca. 3.5 miles west of Glenbrook and Bottle Rock Road., vicinity of Caldwell Pines. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD160866  Arctostaphylos manzanita James A. Neilson Jr.; Teresa A. Sholars 1975-6-27 3304 Sonoma Mayacmas Mountains, Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  JEPS97599  Arctostaphylos manzanita subsp. elegans R. D. Stone and G. L. Clifton 1984-6-13 628 Lake Along upper High Valley Creek ca. 0.9 mi SW of Binkley Ranch and 0.9 mi E of Caldwell Pines 743 Comment
  CAS-BOT-BC24328  Arctostaphylos manzanita subsp. manzanita Walter Knight; Irja Knight; Dr. Steve Edwards 1986-3-23 5365 Mendocino On the Geysers Rd. near Mercuryville at junction of private road to Sulphur Peak. 822 Comment
  A362402  Arctostaphylos viscida J. T. Howell 1943-5-11 18043 Unknown 8.9 miles south of Kelseyville Comment
  UCD151236  Arctostaphylos viscida James A. Neilson Jr. 1974-4-30 3063 Lake Lake County (in the vicinity of Sonoma and Lake County boundary): Mayacmas Mountains, county line ridge, 1/4 mile north of Geyser Rock, ca. 2 1/2 miles west of Pine Grove and Battle Rock Road. (Elevation estimated using Google Earth by label maker.) 975 Comment
  UCR42304  Arctostaphylos viscida L. F. LaPre 1986-3-30 s.n. Sonoma Socrates Mine, c. 9 mi. ENE of Geyserville 976 Comment
  RSA364239  Arctostaphylos viscida subsp. pulchella Walter Knight, Irja Knight, Steve Edwards, B. K. Knight 1986-4-20 5363 Sonoma Along trail to Sulphur Peak, east of Geyserville. 976 Comment
  UC1193019  Arctostaphylos viscida subsp. pulchella R. H. Neuns 1950-5-23 116 Sonoma 2 mi ne The Geysers; Quad 60B4 1066 Comment
  UCD59398  Arctostaphylos viscida subsp. pulchella Walter and Irja Knight; Dr. Steve Edwards 1986-4-20 5364 Sonoma Along trail to Sulphur Peak, east of Geyserville. 975 Comment
  SBBG87643  Arctostaphylos viscida subsp. viscida L. F. LaPre 1986-3-30 Sonoma Socrates Mine, ca. 9 mi ENE of Geyserville 914 Comment
  CAS-BOT-BC82563  Arnica discoidea James McMurphy 1909-5-29 s.n. Sonoma Grade, ridge south of the Geysers Comment
  UCD161444  Arnica discoidea James A. Neilson Jr. 1975-7-8 3386 Lake Mayacmas Mountains; west of Alder Creek, vicinity of Geyser Rock. There is conflicting location information for this specimens. In the Flora of the Mayacmas Mtns. Neilson says: 1 mile E of Geyser Rock, Lake County. On the specimen itself, the notes say: western portion of Geyser Rock, on Saw Mill Flat Rd, Lake County (he must have meant eastern portion of Geyser Rock). (Coordinates and elevation estimated by label maker.) 1097 Comment
  UCD160458  Artemisia californica James A. Neilson Jr. 1975-5-23 3181 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160130  Artemisia douglasiana James A. Neilson Jr. 1973-6-6 2946 a Sonoma Mayacmas Mountains. The Geysers. Site IV A. (Exact location of Site IV A unknown. Elevation and coordinates estimated to be near Site IV G by label maker.) 731 Comment
  UC449992  Asclepias cordifolia Milo S. Baker 1898-7-12 676 Sonoma Geyser Canyon Comment
  UCD160016  Asclepias cordifolia James A. Neilson Jr.; Teresa A. Sholars 1975-3-27 3293 Sonoma Mayacmas Mountains, Caldwell Pines, ca. 3 miles west of Glenbrook and Bottle Rock Road. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD160481  Asclepias eriocarpa James A. Neilson Jr. 1975-5-23 3329 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  SEINET197693  Asclepias solanoana Helen K. Sharsmith 1952-6-18 4128 Sonoma Near junction of Socrates Mine road with Pine Flat-Middletown road, Mayacamas Mountains. 975 Comment
  UC1195651  Asclepias solanoana A. R. Kruckeberg 1949-6-4 1762 Sonoma ca 4 mi above Pine Flat (sw of Cobb Mtn.) Comment
  CAS-BOT-BC68786  Aspidotis densa James McMurphy 1909-5-29 s.n. Sonoma Grade, ridge south of the Geysers. Comment
  UCD158841  Aspidotis densa James A. Neilson Jr.; Teresa A. Sholars 1974-12-29 2914 Sonoma North central part of Section 15, 0.25 mile south of Harness Camp and 2 miles west of The Geysers . (Elevation estimated by label maker using Google Earth.) 723 Comment
  CDA31025  Aster radulinus D. G. Kelch, Troy McGregor 2010-8-22 10 .345 Sonoma Nr Peak of Geyser Peak Rd. 0 Comment
  CAS-BOT-BC178833  Astragalus breweri R. D. Stone; G. Clifton; William B. Davilla 1983-5-12 507 Lake Gravelly flats in perennial grassland immediately northest of the bridge over Alder Creek on High Valley Rd., 0.5 mi. due S of Glenbrook 716 Comment
  UCD160438  Astragalus gambelianus James A. Neilson Jr. 1975-5-14 3455 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD161439  Asyneuma prenanthoides James A. Neilson Jr. 1975-7-8 3389 Lake Mayacmas Mountains; west of Alder Creek, vicinity of Geyser Rock. (Coordinates and elevation estimated by label maker.) 1089 Comment
  UCD161436  Athyrium filix-femina var. cyclosorum James A. Neilson Jr. 1975-7-8 3392 Lake Mayacmas Mountains; halfway between Alder Creek and Geyser Rock near road. (Coordinates and elevation estimated by label maker.) 1089 Comment
  UCD151169  Athysanus pusillus James A. Neilson Jr. 1974-3-27 3021 Sonoma Mayacmas Mountains. The Geysers. Site A-8. (Elevation estimated using Google Earth by label maker.) 426 Comment
  UCD158922  Berberis aquifolium var. aquifolium James A. Neilson Jr. 1975-4-28 3146 Lake Mayacmas Mountains, Esperance Property, High Valley Creek. (Elevation estimated using topo map by label maker.) 792 Comment
  CAS-BOT-BC75899  Berberis piperiana M. S. Baker 1950-5-4 9598 Lake Near Jordan Park, Kelsey Creek. Comment
  UCD167527  Boechera breweri James Neilson 1979-6-26 3978 Sonoma Mayacmas Mountains, Big Sulphur Creek drainage, Cadd Fire trail about 2.3 miles NW Contact Mine. (Notebook says 'Mt Baby Rocks' on crest of main ridge 2 mi n.w. Socrates Mine between Big and Little Sulphur Creek drainages. Exact location unknown. Coordinates estimated by label maker.) Comment
  UC964743  Boykinia occidentalis R. F. Hoover 1942-7-6 5914 Sonoma canyon s Geysers; canyon s of the Geysers Comment
  UCD161443  Boykinia occidentalis James A. Neilson Jr. 1975-7-8 3388 Lake Mayacmas Mountains; west of Alder Creek, vicinity of Geyser Rock. There is conflicting location information for this specimens. In the Flora of the Mayacmas Mtns. Neilson says: 1 mile E of Geyser Rock, Sonoma County (1 mile E of Geyser Rock would be Lake County). On the specimen itself, the notes say: western portion of Geyser Rock, west of Alder Creek, Saw Mill Flat Rd, Sonoma County (Saw Mill Flat Road is only on the east side of Geyser Rock and mostly in Lake County). (Coordinates, location, and elevation estimated by label maker.) 1097 Comment
  UCD151112  Briza maxima James A. Neilson Jr. 1974-6-1 2939 Sonoma Mayacmas Mountains, Mercuryville, The Geysers Road. (Elevation estimated by label maker using Google Earth.) 822 Comment
  UCD151072  Brodiaea californica James A. Neilson Jr. 1974-6-1 2884 Sonoma Mayacmas Mountains, Geyser Rock area, ca. 3 1/2 mi. west of Whispering Pines, northeast Sonoma County. (Elevation estimated by label maker using Google Earth.) 1027 Comment
  UCD160815  Brodiaea elegans subsp. elegans James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3354 Sonoma Section 10, One-quarter mile west of Eagle Rock on Geysers Road, The Geysers. (Elevation and coordinates estimated by label maker). 396 Comment
  UCD168051  Bromus James Neilson 1981-7-1 4045 Sonoma Mayacmas Mountains, entrance to Unit 15. (Exact location unknown. Coordinates estimated by label maker. Unit 15 is PG and E Power Plant 15 (retired).) Comment
  CAS-BOT-BC148783  Bromus carinatus var. marginatus James Jokerst 1985-4-26 2270 Sonoma Near Caldwell Ranch. Comment
  UCD151108  Bromus carinatus var. marginatus James A. Neilson Jr. 1974-6-1 3035 Sonoma Mayacmas Mountains, Geyser Rock. (Elevation estimated by label maker using Google Earth.) 1066 Comment
  UCD151208  Bromus carinatus var. marginatus James A. Neilson Jr. 1974-8-19 2853 Lake On the border of Lake and Sonoma Counties: Mayacmas Mountains, Caldwell Pines, west of Glenbrook and Bottlerock Roads. (Elevation estimated using Google Earth by label maker.) 1013 Comment
  UCD160977  Bromus carinatus var. marginatus James A. Neilson Jr. 1975-7-8 3305 Sonoma Mayacmas Mountains. Socrates Mine. (Elevation and coordinates estimated by label maker.) 914 Comment
  UCD161375  Bromus carinatus var. marginatus James A. Neilson Jr. 1976-6-18 s.n. Sonoma Mayacmas Mountains. Ridge between Squaw Creek and Big Sulphur Creek, (Elevation and exact location estimated by label maker.) 731 Comment
  UCD151079  Bromus laevipes James A. Neilson Jr. 1974-6-1 3007 Sonoma Mayacmas Mountains, 1/4 mi. south of Geyser Rock area, ca. 3 1/2 mi. west of Whispering Pines, east Sonoma County. (Elevation estimated by label maker using Google Earth.) 1027 Comment
  UCD151142  Bromus madritensis subsp. rubens James A. Neilson Jr. 1973-6-7 3564 Sonoma Mayacmas Mountains. The Geysers. Site IV. (Exact location of Site IV unknown. Elevation and coordinates very broadly estimated by label maker.) 441 Comment
  UCD160851  Bromus madritensis subsp. rubens James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3284 Sonoma Mayacmas Mountains, Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD151081  Bromus vulgaris James A. Neilson Jr. 1974-6-1 3022 Sonoma Mayacmas Mountains, 1/4 mi. south of Geyser Rock area, ca. 3 1/2 mi. west of Whispering Pines, east Sonoma County. (Elevation estimated by label maker using Google Earth.) 1027 Comment
  UCD160491  Calamagrostis ophitidis James A. Neilson Jr. 1975-5-23 3188 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD158814  Calandrinia breweri James A. Neilson Jr. 1974-4-17 3487 Sonoma Mayacmas Mountains. Big Geysers. (Elevation estimated using topo map by label maker.) 548 Comment
  UCD151097  Calochortus amabilis James A. Neilson Jr. 1973-6-3 3431 Sonoma Mayacmas Mountains. The Geysers. Site I. In Geyser Canyon. (Location and elevation of Site I estimated from Neilson 2994 which has Township/Range data and says that Site I is in Geyser Canyon. Coordinates estimated by label maker.) 853 Comment
  UCD160689  Calochortus amabilis James A. Neilson Jr. 1975-5-23 3175 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160844  Calochortus amabilis James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3360 Sonoma One-quarter mile south of Eagle Rock on Geysers Road, The Geysers. (Elevation and coordinates estimated by label maker.) 457 Comment
  UCD160859  Calochortus amabilis James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3297 Sonoma Mayacmas Mountains, Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD160400  Calochortus coeruleus James A. Neilson Jr. 1975-5-14 3466 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  GH357363  Calochortus pulchellus 1884-5-23 Unknown Geysers, California Comment
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Feb 14 2017
  UCD160814  Calochortus superbus James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3039 Sonoma Section 10, The Geysers. (Exact location unknown. Elevation and coordinates estimated by label maker.) 426 Comment
  UCD160323  Calochortus tolmiei James A. Neilson Jr. 1975-5-14 3480 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160715  Calochortus tolmiei James A. Neilson Jr. 1975-5-23 3186 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UC1876234  Calycadenia fremontii Gerald D. Carr 1971-8-17 640 Sonoma The Geysers. 487 Comment
  CAS-BOT-BC270842  Calycadenia pauciflora Gerald D. Carr 1971-8-17 640 Sonoma The Geysers 487 Comment
  CAS-BOT-BC270845  Calycadenia pauciflora Marcus E. Jones 1931-7-5 21925 Sonoma The Geysers Comment
  CAS-BOT-BC270846  Calycadenia pauciflora Marcus E. Jones 1931-7-5 21925 Sonoma The Geysers Comment
  CAS-BOT-BC270847  Calycadenia pauciflora David D. Keck 1944-7-11 5511 Sonoma The Geysers, Mayacamas Range Comment
  CAS-BOT-BC270848  Calycadenia pauciflora David D. Keck 1944-7-11 5511 Sonoma The Geysers, Mayacamas Range Comment
  CAS-BOT-BC270849  Calycadenia pauciflora 1877-6-26 s.n. Sonoma Geysers Comment
  RSA135373  Calycadenia pauciflora Volney Rattan 1877-6-26 s.n. Sonoma Geysers Comment
  RSA255606  Calycadenia pauciflora Gerald D. Carr 1971-8-17 640 Sonoma The Geysers 488 Comment
  UC479413  Calycadenia pauciflora Marcus E. Jones, A. M. 1931-7-5 29125 Sonoma The Geysers Comment
  UC717978  Calycadenia pauciflora David D. Keck 1944-7-11 5511 Sonoma The Geysers Mayacamas Range Comment
  UCD158790  Calycadenia truncata James A. Neilson Jr. 1974-6-1 2877 Sonoma Mayacmas Mountains, Geyser Rock, Sonoma County. (Elevation estimated by label maker using Google Earth.) 1118 Comment
  CAS-BOT-BC91009  Calycanthus occidentalis James McMurphy 1909-5-29 s.n. Sonoma Near the Geysers. Comment
  GH376890  Calycanthus occidentalis G. G. Cowing 1884-5-22 Unknown The Geysers Comment
Read comments
Dec 18 2015
  UC1196353  Calycanthus occidentalis Joseph P. Tracy 1935-7-7 14044 Sonoma near Geysers; Northern Coast Ranges 609 Comment
  JEPS97518  Calyptridium quadripetalum R. D. Stone 1984-6-13 627 Lake along upper High Valley Creek; ca. 0.9 mi SW of Binkley Ranch and 1.0 mi E of Caldwell Pines 743 Comment
  OBI48779  Calyptridium quadripetalum L. LaPre 1986-5-31 s.n. Sonoma Socrates Mine, ca. 9 mi ENE of Geyserville ; 1/2 mi N of the mine 914 Comment
  UCD167006  Calyptridium quadripetalum Joyce Lacey; Robin Ondricek-Fallscheer 1981-6-27 s.n. Lake West of Glenbrook, along High Valley Rd. ca. 2 mi. West of of the junction of High Valley Rd. and Bottle Rock Rd. East edge of Sec. 31 between NE 1/4 and SE 1/4 of the SE 1/4. (Exact location unknown, coordinates estimated by label maker.) 780 Comment
  UCR45086  Calyptridium quadripetalum L. F. LaPre 1986-5-31 s.n. Sonoma Socrates Mine, c. 9 mi ENE of Geyserville 976 Comment
  UC7776  Calyptridium umbellatum H. N. Bolander 1864-1 3973 Sonoma within 8 or 9 yards of The Geysers Comment
  UCD160461  Calystegia occidentalis James A. Neilson Jr. 1975-5-23 3318 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160869  Calystegia purpurata James A. Neilson Jr.; Teresa A. Sholars 1975-6-27 3295 Sonoma Mayacmas Mountains, Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD167354  Calystegia purpurata subsp. saxicola James Neilson 1981-5-28 4035 Sonoma Mayacmas Mountains. Geysers Healdsburg Rd. about 1/2 mile west Geysers Resort. (Exact location unknown. Coordinates estimated by label maker.) Comment
  UCD160460  Calystegia subacaulis James A. Neilson Jr. 1975-5-23 3177 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160613  Camissoniopsis James A. Neilson Jr. 1975-5-23 3313 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD167111  Cardamine californica James Neilson 1977-3-25 3849 Sonoma Mayacmas Mountains. Socrates Mine area. (Exact location unknown, coordinates estimated by label maker.) Comment
  UCD151170  Cardamine oligosperma James A. Neilson Jr. 1974-3-27 3014 Sonoma Mayacmas Mountains. The Geysers. Site A-8. (Elevation estimated using Google Earth by label maker.) 426 Comment
  UCD158923  Cardamine oligosperma James A. Neilson Jr. 1975-4-28 3155 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Elevation estimated using Google Earth by label maker.) 853 Comment
  UCD161814  Carex James A. Neilson Jr. 1975-5-23 3305 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Exact location unknown. Coordinates estimated by label maker.) Comment
  UCD161815  Carex James A. Neilson Jr. 1975-6-5 3334 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Exact location unknown. Coordinates, estimated by label maker.) Comment
  UCD161816  Carex James A. Neilson Jr. 1975-5-23 3320 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Exact location unknown. Coordinates estimated by label maker.) Comment
  UCD161817  Carex James A. Neilson Jr. 1975-6-5 3229 Lake Mayacmas Mountains, High Valley Creek. (Exact location unknown. Coordinates, estimated by label maker as being in Francisco Property where other collections were made on this date.) Comment
  UCD161859  Carex James A. Neilson Jr. 1973-6-6 s.n. Sonoma Mayacmas Mountains. The Geysers. Site IV. (Exact location of Site IV unknown. Elevation and coordinates very broadly estimated by label maker.) 441 Comment
  UCD161860  Carex James A. Neilson Jr. 1973-6-6 s.n. Sonoma Mayacmas Mountains. The Geysers. Site IV. (Exact location of Site IV unknown. Elevation and coordinates very broadly estimated by label maker.) 441 Comment
  CAS-BOT-BC19567  Carex bolanderi James Jokerst 1985-4-26 2269 Sonoma Near Caldwell Ranch. Comment
  CHSC55604  Carex bolanderi James Jokerst 1985-4-26 2269 Sonoma Near Caldwell Ranch. Comment
  JEPS97574  Carex bolanderi R. D. Stone 1983-6-15 546 Lake Upper High Valley Creek drainage Geyser Rock (ca. 1.4 mi NW of) 883 Comment
  CAS-BOT-BC18991  Carex densa James D. Jokerst 1985-4-26 2271 Sonoma Near Caldwell Ranch. Comment
  CAS-BOT-BC20489  Carex densa James D. Jokerst 1985-4-26 2272 Sonoma Near Caldwell Ranch. Comment
  CHSC55433  Carex densa James Jokerst 1985-4-26 2271 Sonoma Near Caldwell Ranch. Comment
  UCD151070  Carex densa James A. Neilson Jr. 1974-6-1 2767 Sonoma Mayacmas Mountains, 1/4 mi. south of Geyser Rock area, ca. 3 1/2 mi. west of Whispering Pines and state highway 175, east Sonoma County. (Elevation estimated by label maker using Google Earth.) 1027 Comment
  UCD167142  Carex densa Jake Ruygt 2015-5-2 6087 Napa West of Buck Mountain near Nevada. 599 Comment
  CAS-BOT-BC20136  Carex feta James D. Jokerst 1985-4-26 2273 Sonoma Near Caldwell Ranch. Comment
  UCD151076  Carex multicaulis James A. Neilson Jr. 1974-6-1 2766 Sonoma Mayacmas Mountains, 1/4 mi. south of Geyser Rock area, ca. 3 1/2 mi. west of Whispering Pines and state highway 175, east Sonoma County. (Elevation estimated by label maker using Google Earth.) 1027 Comment
  JEPS97579  Carex serratodens R. D. Stone 1983-6-18 572 Lake Alder Creek drainage Glenbrook (ca. 1.5 mi SSW of) 853 Comment
  UCD161858  Carex serratodens James A. Neilson Jr. 1975-7-8 3406 Sonoma Mayacmas Mountains. Socrates Mine. (Exact location unknown. Coordinates estimated by label maker.) Comment
  CAS-BOT-BC115828  Carex subfusca James D. Jokerst 1985-4-26 2274 Sonoma Near Caldwell Ranch, the Geysers Quad. Comment
  JEPS97575  Carex subfusca R. D. Stone 1983-6-1 518 Lake Upper High Valley Creek drainage Glenbrook (ca. 1 mi SSW of) 792 Comment
  UCD160818  Castilleja affinis James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3481 Sonoma Section 10, along Geysers Road, west of The Geysers Resort. (Exact location unknown. Elevation and coordinates estimated by label maker.) 388 Comment
  UCR45081  Castilleja applegatei subsp. martini L. F. LaPre 1986-5-31 s.n. Sonoma Socrates Mine, c. 9 mi ENE of Geyserville 976 Comment
  UCD160862  Castilleja applegatei subsp. martinii James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3301 Sonoma Mayacmas Mountains, Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD151183  Castilleja attenuata James A. Neilson Jr. 1974-4-16 2873 Sonoma Mayacmas Mountains. Big Geysers. (Elevation estimated using Google Earth by label maker.) 548 Comment
  UCD160875  Castilleja foliolosa James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3285 Sonoma Mayacmas Mountains, ca. 1/4 mile south of Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD160659  Castilleja rubicundula subsp. lithospermoides James A. Neilson Jr. 1975-6-5 3249 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  CAS-BOT-BC47804  Ceanothus James McMurphy 1909-5-29 s.n. Sonoma Creek between Geyser Mountain and the Geysers Comment
  CAS-BOT-BC47805  Ceanothus James McMurphy 1909-5-29 s.n. Sonoma ridge south of the Geysers Comment
  UCD158853  Ceanothus cuneatus James A. Neilson Jr.; Teresa A. Sholars 1974-12-29 2918 Sonoma The Geysers, Section 15. (Elevation estimated by label maker using Google Earth.) 723 Comment
  UCD160146  Ceanothus cuneatus James A. Neilson Jr. 1974-4-24 2716 Sonoma Mayacmas Mountains, Squaw Creek drainage, at site of geothermal well Ottoboni 17. (Exact location of Ottoboni 17 unknown; this record is georeferenced along Ottoboni Ridge Road in The Geysers; elevation estimated by label-maker). 967 Comment
  UCD158849  Ceanothus foliosus James A. Neilson Jr.; Teresa A. Sholars 1974-12-29 2919 Sonoma The Geysers, Section 15. (Elevation estimated by label maker using Google Earth.) 723 Comment
  UCD160879  Ceanothus foliosus James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3283 Sonoma Mayacmas Mountains, ca. 1/4 mile south of Caldwell Pines, ca. 3 1/2 miles west of Whispering Pines, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  CAS-BOT-BC50044  Ceanothus incanus James McMurphy 1909-5-29 s.n. Sonoma Creek between Geyser Mountain and the Geysers Comment
  RSA276844  Ceanothus incanus James I. McMurphy 1909-5-29 s.n. Sonoma Creek between Geyser Mtn and the Geysers Comment
  UC1198031  Ceanothus incanus Joseph P. Tracy 1935-7-7 14045 Sonoma near the Geysers 609 Comment
  UCD158880  Ceanothus incanus James A. Neilson Jr. 1975-1-23 3124 Sonoma Mayacmas Mountains. One-quarter mile south of Little Sulphur Creek crossing., Healdsburg- Geysers Road. (Elevation estimated using topo map by label maker.) 731 Comment
  A349604  Ceanothus integerrimus T. S. Brandegee 1890-05-01 - 1890-06-01 22 Unknown Geysers Comment
  CAS-BOT-BC50953  Ceanothus integerrimus Brandegee 1890-5-1 22 Sonoma Geysers Comment
  CAS-BOT-BC50954  Ceanothus integerrimus James McMurphy 1909-5-29 s.n. Sonoma Grade between Black Mountain and Geyser Mountain Comment
  GH349513  Ceanothus integerrimus T. S. Brandegee 1890-05-01 - 1890-06-01 22 Unknown Geysers Comment
  RSA276845  Ceanothus integerrimus James I. McMurphy 1909-5-29 s.n. Sonoma Creek between Geyser Mtn and the Geysers Comment
  UC80042  Ceanothus integerrimus Katharine Brandegee May 1890 Sonoma Geysers Comment
  UCD160718  Ceanothus integerrimus James A. Neilson Jr. 1975-5-23 3174 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD160873  Ceanothus integerrimus James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3268 Sonoma Mayacmas Mountains, ca. 1/2 mile south of Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  CAS-BOT-BC50645  Ceanothus jepsonii James McMurphy 1909-5-29 s.n. Sonoma Grade, ridge sout of the Geysers Comment
  CDA31017  Ceanothus jepsonii D. G. Kelch, Troy McGregor 2010-8-22 10 .359 Sonoma Nr Peak of Geyser Peak Rd. 0 Comment
  RSA181444  Ceanothus jepsonii James I. McMurphy 1909-5-29 s.n. Sonoma Grade, ridge S of the Geysers. Comment
  UC70452  Ceanothus jepsonii Milo S. Baker 1898-6-11 662 Sonoma near Geysers (Hog Back) Comment
  UCD151234  Ceanothus jepsonii James A. Neilson Jr. 1974-4-30 3570 Lake Lake County (on county line between Sonoma and Lake counties): Mayacmas Mountains, county line ridge, 1/4 mile north of Geyser Rock. (Elevation estimated using Google Earth by label maker.) 975 Comment
  UCD158875  Ceanothus jepsonii James A. Neilson Jr.; Teresa A. Sholars 1974-12-29 2906 Sonoma Mayacmas Mountains; northwest corner of Section 15, The Geysers. (Elevation estimated by label maker using Google Earth.) 609 Comment
  UCD151237  Ceanothus oliganthus var. sorediatus James A. Neilson Jr. 1974-4-30 s.n. Lake Lake County (on county line between Sonoma and Lake counties): Mayacmas Mountains, county line ridge, 1/4 mile north of Geyser Rock. (Elevation estimated using Google Earth by label maker.) 975 Comment
  UCD160147  Ceanothus oliganthus var. sorediatus James A. Neilson Jr. 1974-4-24 2717 Sonoma Mayacmas Mountains, Squaw Creek drainage, at site of geothermal well Ottoboni 17. (Exact location of Ottoboni 17 unknown; this record is georeferenced along Ottoboni Ridge Road in The Geysers; elevation estimated by label-maker). 967 Comment
  UCD161376  Centaurea melitensis James A. Neilson Jr. 1976-6-18 s.n. Sonoma Mayacmas Mountains. Ridge between Squaw Creek and Big Sulphur Creek, above Cloverdale Mine, (Elevation and exact location estimated by label maker.) 731 Comment
  UCR42347  Centaurea solstitialis L. F. LaPre 1985-6-25 s.n. Sonoma Coast Ranges, Socrates Mine, c. 9 mi. ENE of Geyserville 917 Comment
  UCD160839  Centromadia fitchii James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3482 Sonoma Section 10, ca. 1 mile west of the Geysers Resort. (Exact location unknown. Elevation and coordinates estimated by label maker.) 396 Comment
  UCD160129  Cerastium fontanum subsp. vulgare James A. Neilson Jr. 1973-6-6 2956 Sonoma Mayacmas Mountains. The Geysers. Site IV A. (Exact location of Site IV A unknown. Elevation and coordinates estimated as near Site IV G by label maker.) 731 Comment
  UCD160329  Cerastium glomeratum James A. Neilson Jr. 1975-5-14 3465 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  CAS-BOT-BC207632  Cercis occidentalis Peter Fritsch 1999-10-3 1749 Sonoma 0.5 mi W of the gate to the geothermal plant along Geysers Resort Road. Comment
  CAS-BOT-BC207634  Cercis occidentalis James McMurphy 1909-5-29 s.n. Sonoma Grade between Black Mountain and Geyser Mountain Comment
  POM187556  Cercis occidentalis Jones 1931-7-5 28974 Sonoma The Geysers Comment
  RSA181418  Cercis occidentalis James I. McMurphy 1909-5-29 s.n. Sonoma Grade between Black Mountain and Geyser Mountain. Comment
  UC15102 Image available Cercis occidentalis H. N. Bolander 1864-1 3946 Sonoma The Geysers Comment
  CAS-BOT-BC135418  Cercocarpus betuloides var. betuloides Walter Knight; Irja Knight 1963-12-27 474 Sonoma Pine Flat Road, summit. Comment
  UCD160877  Chaenactis douglasii James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3262 Sonoma Mayacmas Mountains, adjacent to Caldwell Pines, ca. 3 1/2 miles west of Glenbrook, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD158807  Chaenactis glabriuscula var. heterocarpha James A. Neilson Jr. 1974-3-27 2941 Sonoma Mayacmas Mountains. Big Geysers. (Elevation estimated using topo map by label maker.) 548 Comment
  UCD160302  Chaenactis glabriuscula var. heterocarpha James A. Neilson Jr. 1975-5-22 3223 Lake Mayacmas Mountains, Geyser Rock area, in the vicinity of the boundary line of Sonoma and Lake Counties. (Coordinates and elevation estimated by label maker.) 1118 Comment
  UCD160819  Chaenactis glabriuscula var. heterocarpha James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3434 Sonoma Section 10, ca. 1.5 miles west of The Geysers Resort. (Exact location unknown. Elevation and coordinates estimated by label maker.) 396 Comment
  UCD167341  Chamaemelum fuscatum James Neilson 1980-5-1 3427 Sonoma Mayacmas Mountains. about 1 mi. southwest of Geysers Resort off of Geysers-Healdsburg Rd. Ranch 1 mile south old Mercuryville. (Exact location unknown. Coordinates estimated by label maker. Neilson probably meant 1 mile north of old Mercuryville.) Comment
  CHSC39462  Cheilanthes gracillima Leo Edson 1984-4-19 5 Lake On rock face at Geysers Rock. 1100 Comment
  UC1242071  Cheilanthes intertexta Don Branscomb 1961-2-27 Sonoma Comment
  UCR45078  Chenopodium botrys L. F. LaPre 1986-7-29 s.n. Sonoma Socrates Mine, c. 9 mi ENE of Geyserville 976 Comment
  UCD158802  Chenopodium californicum James A. Neilson Jr. 1974-1 3062 Sonoma Mayacmas Mountains. Big Geysers. (Elevation estimated using topo map by label maker.) 548 Comment
  UCD160834  Cirsium cymosum James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3369 Sonoma Section 10, the Geysers. (Exact location unknown. Elevation and coordinates estimated by label maker.) 388 Comment
  UCD161669  Cirsium cymosum James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3369 Sonoma Section 10, the Geysers. (Exact location unknown. Elevation and coordinates estimated by label maker.) 388 Comment
  UCD160217  Cirsium occidentale James A. Neilson Jr. 1974-5-17 3166 Sonoma On the border of Lake and Sonoma Counties: Mayacmas Mountains, Geyser Rock area, west of Whispering Pines and State Highway 175. (Elevation estimated using Google Earth by label maker.) 1115 Comment
  UCD158795  Cirsium occidentale var. venustum James A. Neilson Jr. 1974-7-19 2848 Lake Mayacmas Mountains, Geyser Rock, west of Whispering Pines, County. (Elevation estimated by label maker using Google Earth.) 1118 Comment
  CAS-BOT-BC169773  Cistanthe quadripetala Roger Raiche 1984-6-9 40204 Sonoma Mayacamas Mts., NW of fireroad at summit from end of Pine Flat Rd. (N of Socrates Mine) 975 Comment
  UCD158780  Clarkia concinna James A. Neilson Jr. 1974-6-1 2776 Sonoma Mayacmas Mountains, Geyser Rock, west of Whispering Pines, in the vicinity of the boundary line of Sonoma and Lake Counties. (Elevation estimated by label maker using Google Earth.) 1118 Comment
  UCD160125  Clarkia concinna James A. Neilson Jr. 1973-6-6 2987 Sonoma Mayacmas Mountains. The Geysers. Site III. [Location of Site III at The Geysers taken from Neilson 3115 which gave the Township/Range of the location. Elevation and coordinates estimated by label maker.] 731 Comment
  UCD160695  Clarkia concinna James A. Neilson Jr. 1975-6-5 3348 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160835  Clarkia concinna James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3358 Sonoma Section 10, on the Geysers Road, 1/4 mile west of Eagle Rock. (Elevation and coordinates estimated by label maker.) 396 Comment
  CHSC41510  Clarkia concinna subsp. concinna R. N. Bowman 1985-5-23 6073 Sonoma .2 miles w of guarded entrance to 'The Geysers' geothermal power generating area on Geysers Resort Rd. 445 Comment
  UCD151107  Clarkia gracilis James A. Neilson Jr. 1974-6-1 s.n. Sonoma Mayacmas Mountains, Geyser Rock area, old road to Geyser Peak, ca. 3.5 mi. west of Whispering Pines, northeast Sonoma County. (Elevation estimated by label maker using Google Earth.) 1027 Comment
  UCD158789  Clarkia gracilis James A. Neilson Jr. 1974-6-1 2876 Sonoma Mayacmas Mountains, Geyser Rock, west of Whispering Pines, northeastern Sonoma County. (Elevation estimated by label maker using Google Earth.) 1118 Comment
  UCD160114  Clarkia gracilis James A. Neilson Jr. 1973-6-3 2970 Sonoma Mayacmas Mountains. The Geysers. Site I. (Location and elevation of Site I estimated from Neilson 2994 which has Township/Range data and says that Site I is in Geyser Canyon. Coordinates estimated by label maker.) 853 Comment
  UCD160697  Clarkia purpurea subsp. quadrivulnera James A. Neilson Jr. 1975-6-5 3252 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD161396  Clarkia rhomboidea James A. Neilson Jr. 1976-6-18 s.n. Sonoma Mayacmas Mountains. Ridge crest between Big Sulphur Creek and Squaw Creek. (Exact location unkown. Coordinates estimated by label maker.) Comment
  POM187327  Clarkia unguiculata Marcus E. Jones 1931-7-5 29038 Sonoma The Geysers. Comment
  UCD160134  Clarkia unguiculata James A. Neilson Jr. 1973-6-7 2971 Sonoma Mayacmas Mountains. The Geysers. Site IV-G, Big Geysers. (Elevation and exact location estimated by label maker.) 365 Comment
  UCD160316  Claytonia exigua subsp. glauca James A. Neilson Jr. 1975-5-14 3479 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160138  Claytonia gypsophiloides James A. Neilson Jr. 1974-3-27 3011 Sonoma Mayacmas Mountains. The Geysers. Site A-8. (Elevation estimated using Google Earth by label maker.) 426 Comment
  UCD158888  Claytonia rubra subsp. depressa James A. Neilson Jr. 1975-4-15 3129 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Elevation estimated using Google Earth by label maker.) 853 Comment
  UCD160143  Claytonia rubra subsp. depressa James A. Neilson Jr. 1974-4-4 3168 Sonoma Mayacmas Mountains, upper Squaw Creek. (Elevation estimated using Google Earth by label maker.) 975 Comment
  UCD160878  Clematis lasiantha James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3257 Sonoma Mayacmas Mountains, ca. 1/2 mile south of Caldwell Pines, ca. 3 1/2 miles west of Glenbrook, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  JEPS3574  Collinsia greenei Helen K. Sharsmith 1952-6-18 4130 Sonoma about 0.8 mi w junction of Socrates Mine Rd. with Pine Flat-Middletown road; Mayacamas Mountains 914 Comment
  UC1238966  Collinsia greenei Freed W. Hoffman 1950-6-16 3616 Sonoma near Mercuryville; North Coast Ranges Comment
  UC26616  Collinsia greenei H. N. Bolander 1866-1 3968 Sonoma The Geysers Comment
  UC972155  Collinsia greenei Helen K. Sharsmith 1952-6-18 4130 Sonoma ca 0.8 mi w jct Socrates Mine rd and Pine Flat-Middletown rd; Inner North Coast Ranges, Mayacamas Mtns 914 Comment
  UCD158896  Collinsia sparsiflora James A. Neilson Jr. 1975-4-28 3144 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Elevation estimated using Google Earth by label maker.) 853 Comment
  UCD151166  Collinsia sparsiflora var. sparsiflora James A. Neilson Jr. 1974-3-27 3016 Sonoma Mayacmas Mountains. The Geysers. Site A-8. (Elevation estimated using Google Earth by label maker.) 426 Comment
  UCD158784  Collomia heterophylla James A. Neilson Jr. 1974-6-1 2878 Sonoma Mayacmas Mountains, west of Geyser Rock, west of Whispering Pines, northeastern Sonoma County. (Elevation and coordinates estimated by label maker). 1066 Comment
  UCD160696  Convolvulus arvensis James A. Neilson Jr. 1975-6-5 3253 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  CHSC35300  Cordylanthus pringlei J. Lacey; R. Ondricek-Fallscheer 1981-7-28 20 Lake Turn off of Bottle Rock Rd, just s of Glenbrook on to Hwy Valley Rd and continue 2 mi along a dirt rd. 799 Comment
  CDA30951  Cordylanthus tenuis subsp. brunneus D. G. Kelch, Troy McGregor 2010-8-22 10 .353 Sonoma Nr Peak of Geyser Peak Rd. 0 Comment
  CHSC107300  Cordylanthus tenuis subsp. brunneus D. G. Kelch; Troy McGregor 2010-8-22 10 .353 Sonoma Nr Peak of Geyser Peak Rd. In open areas on serpentine. Comment
  CHSC34253  Cordylanthus tenuis subsp. brunneus J. Lacey; R. Oncricek-Fallscheer 1981-6-26 11 Lake Turn w off of Bottle Rock Rd, just s of Glenbrook on to High Valley Rd and continue 2 mi. 809 Comment
  UCD123127  Cordylanthus tenuis subsp. brunneus Joyce Lacey; Robin Ondricek-Fallscheer 1981-6-26 15 Lake turn west off of Bottle Rock Road just south of Glenbrook on to High Valley Road and continue 2 miles. 817 Comment
  JEPS97611  Crepis pleurocarpa R. D. Stone 1983-6-18 570 Lake 1.5 mi SSW Glenbrook; Upper High Valley Creek drainage 853 Comment
  UCD158831  Croton setiger James A. Neilson Jr.; Teresa A. Sholars 1974-12-29 2921 Sonoma The Geysers, Section 14. (Elevation estimated by label maker using Google Earth.) 533 Comment
  UCD160319  Cryptantha James A. Neilson Jr. 1975-5-14 s.n. Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD167559  Cryptantha James A. Neilson Jr. 1976-6-18 s.n. Sonoma Mayacmas Mountains. Squaw Creek. 1/4 mile from Black Hawk Ranch headquarters. 20 feet above creek. (Exact location unkown. Coordinates estimated by label maker. Black Hawk Ranch location not found. Location georeferenced at the end of Ottobani Ridge between Big Sulphur Creek and Squaw Creek because neilson collected in that area on 18 June 1976.) Comment
  UCD158803  Cryptantha hispidula James A. Neilson Jr. 1974-3-16 2868 Sonoma Mayacmas Mountains. Big Geysers. (Elevation estimated using topo map by label maker.) 548 Comment
  UC1731386  Cryptantha milobakeri Dean W. Taylor 1998-6-22 16683 Sonoma 0.3 mi along ridge from Eagle Rock Substation ((ridge dividing Bear Canyon from Squaw Cr.)); North Coast Ranges, Mayacamas Mountains, The Geysers Geother 792 Comment
  UC1731388  Cryptantha torreyana Dean W. Taylor 1998-6-22 16688 Sonoma 0.3 mi along ridge from Eagle Rock Substation ((ridge dividing Bear Canyon from Squaw Cr.)); North Coast Ranges, Mayacamas Mountains, The Geysers Geother 792 Comment
  UCD160486  Cryptantha torreyana James A. Neilson Jr. 1975-5-23 3183 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UC1086217  Cupressus macnabiana A. R. Kruckeberg 1947-8-16 1570 Lake hills ne Glenbrook (w end of valley); Cobb Valley Comment
  UC1086219  Cupressus macnabiana A. R. Kruckeberg 1947-8-16 1570 Lake on serpentine hills ne of Glenbrook (w end of Cobb Valley); Cobb Valley Comment
  UCD158872  Cupressus sargentii James A. Neilson Jr.; Teresa A. Sholars 1974-12-29 2905 Sonoma Mayacmas Mountains; northwest corner of Section 15, The Geysers. (Elevation estimated by label maker using Google Earth.) 609 Comment
  UCD158873  Cupressus sargentii James A. Neilson Jr.; Teresa A. Sholars 1974-12-29 2903 Sonoma Mayacmas Mountains; northwest part of Section 15, The Geysers. (Elevation estimated by label maker using Google Earth.) 609 Comment
  CDA30987  Cuscuta californica var. breviflora D. G. Kelch, Troy McGregor 2010-8-22 10 .354 Sonoma Nr Peak of Geyser Peak Rd. 0 Comment
  CHSC107540  Cuscuta californica var. breviflora D. G. Kelch; Troy McGregor 2010-8-22 10 .354 Sonoma Nr Peak of Geyser Peak Rd. Comment
  UC1023584  Cynodon dactylon Virginia Bufford 1936-5-21 362 Sonoma Geysers - Cloverdale Rd Comment
  UCD60066  Cynodon dactylon Beecher Crampton 1964-8-18 7140 Sonoma Northeast Sonoma County: 'The Geysers'. Comment
  HSC3650  Cynoglossum grande R. Spellenberg, D. Sutherland, A. Sylvester 1966-3-26 1337 Sonoma Near the Big Geysers Comment
  UCD160110  Cynoglossum grande James A. Neilson Jr. 1973-6-3 2953 Sonoma Mayacmas Mountains. The Geysers. Site I. (Location and elevation of Site I estimated from Neilson 2994 which has Township/Range data and says that Site I is in Geyser Canyon. Coordinates estimated by label maker.) 853 Comment
  UCD160150  Cynoglossum grande James A. Neilson Jr. 1974-4-30 2723 Sonoma Mayacmas Mountains. The Geysers. Bruno # 1. (Exact location of Bruno #1 not known by label-maker, but according to Neilson, it is west of Geysers Resort on a north-facing slope near a stream. In the Mayacmas Flora, he indicates it is near 'Old Mercuryville,' which is different than the Mercuryville seen on maps; location and elevation estimated by label-maker) Comment
  UC552760  Cynosurus echinatus Joseph P. Tracy 1935-7-7 14048 Sonoma near the Geysers; near the Geysers 609 Comment
  UCD160850  Cynosurus echinatus James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3263 Sonoma Mayacmas Mountains, Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD160902  Cynosurus echinatus James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3582 Sonoma Section 10, ca. 1.5 miles west of The Geysers Resort. (Exact location unknown. Elevation and coordinates estimated by label maker.) 396 Comment
  UCD161844  Cyperus eragrostis James A. Neilson Jr. 1975-6-26 s.n. Sonoma Mayacmas Mountains, Caldwell Pines area, Wildhorse #1. (Exact location unknown, coordinates estimated by label maker. Location georeference near Wildhorse Cr.) Comment
  UCD161845  Cyperus eragrostis James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 s.n. Sonoma Section 10, the Geysers. (Exact location unknown. Elevation and coordinates estimated by label maker.) 388 Comment
  UCD160644  Danthonia californica James A. Neilson Jr. 1975-6-5 3237 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Elevation, location, and coordinates estimated by label maker.) 792 Comment
  UCD160484  Datisca glomerata James A. Neilson Jr. 1975-5-23 3307 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160713  Delphinium hesperium James A. Neilson Jr. 1975-6-5 3256 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD160149  Delphinium nudicaule James A. Neilson Jr. 1974-4-30 2721 Sonoma Mayacmas Mountains. The Geysers. Bruno # 1. (Exact location of Bruno #1 not known by label-maker, but according to Neilson, it is west of Geysers Resort on a north-facing slope near a stream. In the Mayacmas Flora, he indicates it is near 'Old Mercuryville,' which is different than the Mercuryville seen on maps; location and elevation estimated by label-maker) Comment
  UCD160218  Delphinium nudicaule James A. Neilson Jr. 1974-5-17 2889 Sonoma Mayacmas Mountains, 1/4 mile south of Geyser Rock, along road to PG and E geothermal units 9 and 10, northeast Sonoma County. (Elevation and georeferencing estimated by label maker.) 1005 Comment
  UCD160693  Deschampsia danthonioides James A. Neilson Jr. 1975-6-5 3239 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UC1023589  Deschampsia elongata Virginia Bufford 1936-5-21 357 Sonoma Cloverdale Rd. - 2 mi. from Geysers Comment
  UCD151203  Deschampsia elongata James A. Neilson Jr. 1974-7-10 2880 Sonoma Mayacmas Mountains, 1/4 mile south of Geyser Rock, west of Whispering Pines, northeast Sonoma County. (Elevation estimated using Google Earth by label maker.) 1082 Comment
  CAS-BOT-BC221848  Dichanthelium acuminatum subsp. fasciculatum John Roos; Lucille Roos 1956-9-1 6598 Sonoma The Geysers Comment
  SEINET225364 Image available Dichanthelium acuminatum subsp. fasciculatum John Roos, Lucill Roose 1956-9-1 6598 Sonoma The Geysers. Comment
  CAS-BOT-BC221146  Dichanthelium acuminatum subsp. thermale Beecher Crampton 1964-8-18 7139 e Sonoma The Geysers, 12 miles (in direct line) east of Cloverdale, ca. 1/2 mile east of Geyser Resort area, slope of steam well (locally called The Outlaw) or otherwise thermal no. 10 (Thermal Power co.), N.E. Sonoma County 493 Comment
  CAS-BOT-BC242664  Dichanthelium acuminatum subsp. thermale Beecher Crampton 1964-8-18 7139 b Sonoma N.E. Sonoma County, The Geysers, 12 miles (in direct line) east of Cloverdale, ca. 1/2 mile east of Geyser Resort area, slope of steam well (locally called The Outlaw) or otherwise thermal no. 10 (Thermal Power co.) Comment
  SEINET238950 Image available Dichanthelium acuminatum subsp. thermale Beecher Crampton 1969-7-14 8493 a Sonoma The Geysers 12 miles (direct line) east of Colverdale. North slope of well above Geyser Creek. 494 Comment
  SEINET242405 Image available Dichanthelium acuminatum subsp. thermale Beecher Crampton 1964-8-18 7139 a Sonoma NE Sonoma County, the Geysers, 12 miles (in direct line) E of Cloverdale, ca. 1/2 mile E of Geyser Resort area 494 Comment
  SEINET242425 Image available Dichanthelium acuminatum subsp. thermale Beecher Crampton 1964-8-18 7139 f Sonoma NE Sonoma Co, The Geysers, 12 mi east of Cloverdale, ca. 1.2mi E of Geyser Resort area, slope of steam well no. 10 494 Comment
  SEINET4572213  Dichanthelium acuminatum subsp. thermale B. Crampton 1964-8-18 7139 c Sonoma North Coast Range; The Geysers, 12 mi (in direct line) east of Cloverdale, c. 0.5 mi east of Geyser Resort area, slope of steam well (locally called 'The Outlaw') or otherwise Thermal Power co. no. 10 494 Comment
  UCR148109  Dichanthelium acuminatum subsp. thermale Beecher Crampton 1964-8-18 7139 C Sonoma North Coast Range, The Geysers, 12 mi (in direct line) east of Cloverdale, c. 0.5 mi east of Geyser Resort area, slope of steam well (locally called 'The Outlaw') or otherwise Thermal Power co. no. 10 494 Comment
  UCR27417  Dichanthelium acuminatum subsp. thermale John C. Roos, L. Roos 1956-9-1 6598 Sonoma North Coast Range, The Geysers 549 Comment
  POM89831  Dichanthelium acuminatum var. thermale Volney Rattan 1885-06 s.n. Sonoma Geysers. Comment
  RSA654140  Dichanthelium acuminatum var. thermale Beecher Crampton 1969-7-14 8493 a Sonoma The Geysers, 12 miles (direct line) east of Cloverdale. North slope of well above Geysers Creek. 494 Comment
  RSA670068  Dichanthelium acuminatum var. thermale Beecher Crampton 1964-8-18 7139 e Sonoma N.E. Somona County. The Geysers, 12 miles (in direct line) east of Cloverdale, ca. 1/2 mile east of Geyser Resort area, slope of steam well (locally called The Outlaw) or otherwise thermal no. 10 (Thermal Power co.);, just below bubbling hat spring. 494 Comment
  UCD151080  Dichelostemma James A. Neilson Jr. 1973-6-3 2990 Sonoma Mayacmas Mountains. The Geysers. Site I. (Location and elevation of Site I estimated from Neilson 2994 which has Township/Range data and says that Site I is in Geyser Canyon. Coordinates estimated by label maker.) 853 Comment
  CAS-BOT-BC153775  Diplacus angustatus John Thomas Howell 1943-5-11 18039 Lake 8.9 miles south of Kelseyville Comment
  UCD151168  Dodecatheon hendersonii James A. Neilson Jr. 1974-3-27 s.n. Sonoma Mayacmas Mountains. The Geysers. Site A-8. (Elevation estimated using Google Earth by label maker.) 426 Comment
  UCD160145  Dodecatheon hendersonii James A. Neilson Jr. 1974-4-16 3158 Sonoma Mayacmas Mountains, upper Squaw Creek. (Elevation estimated using Google Earth by label maker.) 975 Comment
  JEPS129169  Downingia cuspidata Jake Ruygt 2015-5-2 6086 a Napa West of Buck Mountain near Nevada. Knoxville 7.5' Quad. Comment
  UCD151171  Draba verna James A. Neilson Jr. 1974-3-27 3020 Sonoma Mayacmas Mountains. The Geysers. Site A-8. (Elevation estimated using Google Earth by label maker.) 426 Comment
  UCD160691  Drymocallis glandulosa var. reflexa James A. Neilson Jr. 1975-6-5 3244 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD151157  Dryopteris James A. Neilson Jr. 1973-6-6 s.n. Sonoma Mayacmas Mountains. The Geysers. Site III. [Location of Site III at The Geysers taken from Neilson 3115 which gave the Township/Range of the location. Elevation and coordinates estimated by label maker.] 731 Comment
  UCD151156  Dudleya cymosa James A. Neilson Jr. 1973-6-7 2947 Sonoma Mayacmas Mountains. The Geysers. Big Geysers. Site IV-G. (Elevation and exact location estimated by label maker.) 441 Comment
  UCD160639  Eleocharis palustris James A. Neilson Jr. 1975-6-5 3230 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Elevation, location, and coordinates estimated by label maker.) 792 Comment
  UCR42318  Elymus elymoides L. F. LaPre 1985-6-5 s.n. Sonoma Socrates Mine, c. 9 mi. ENE of Geyserville 976 Comment
  UC730044  Elymus glaucus Leo F. Koch 1940-4-22 836 Sonoma Geysers Sulphur Creek Canyon Comment
  UCD158822  Elymus glaucus James A. Neilson Jr.; Teresa A. Sholars 1974-12-28 2895 Sonoma northwest corner of Section 14, The Geysers. (Elevation estimated by label maker using Google Earth.) 472 Comment
  UCD158877  Elymus glaucus James A. Neilson Jr.; Teresa A. Sholars 1974-12-28 2902 Sonoma Mayacmas Mountains; northeast corner of Section 15, The Geysers. (Elevation estimated by label maker using Google Earth.) 609 Comment
  UCD160900  Elymus glaucus James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3583 Sonoma Section 10, 1 1/2 miles west of The Geysers Resort. (Exact location unknown. Elevation and coordinates estimated by label maker.) 396 Comment
  UCD160975  Elymus glaucus James A. Neilson Jr. 1975-7-8 3408 Sonoma Mayacmas Mountains. Socrates Mine. (Elevation and coordinates estimated by label maker.) 914 Comment
  UCD160893  Elymus glaucus subsp. virescens James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3286 a Sonoma Mayacmas Mountains, adjacent to Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottlerock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD167526  Emmenanthe penduliflora James Neilson 1979-6-26 3977 Sonoma Mayacmas Mountains, along Cadd Fire trail about 2 miles NW Contact Mine. (Notebook says on ridge between Big and Little Sulphur Creeks ca. 2 mi NW of Socrates Mine. Exact location unknown. Coordinates estimated by label maker.) Comment
  UCD161455  Epilobium James A. Neilson Jr. 1975-6-5 3344 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD158798  Epilobium canum James A. Neilson Jr. 1974-7-10 2825 Sonoma Mayacmas Mountains. One-half mile south of Geyser Rock, west of Whispering Pines, on road to PG and E geothermal units 9 and 10. 998 Comment
  UCD160638  Epilobium ciliatum James A. Neilson Jr. 1975-6-5 3235 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Elevation, location, and coordinates estimated by label maker.) 792 Comment
  UCD158775  Epilobium ciliatum subsp. watsonii James A. Neilson Jr. 1974-7-10 2814 Sonoma Mayacmas Mountains, 1/4 mi. south of Geyser Rock area. (Elevation estimated by label maker using Google Earth.) 1027 Comment
  UCD160837  Epilobium densiflorum James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3437 Sonoma Section 10, the Geysers. (Exact location unknown. Elevation and coordinates estimated by label maker.) 388 Comment
  UCD160972  Epilobium densiflorum James A. Neilson Jr. 1975-7-8 3407 Sonoma Mayacmas Mountains. Socrates Mine. (Elevation and coordinates estimated by label maker.) 914 Comment
  UCD160151  Epilobium minutum James A. Neilson Jr. 1974-4-30 3034 Lake Border of Lake and Sonoma Counties: Mayacmas Mountains, county line ridge 1/4 mile north of Geyser Rock. (Elevation estimated using Google Earth by label maker.) 1066 Comment
  UCR42297  Epilobium minutum L. F. LaPre 1985-6-25 s.n. Sonoma Coast Ranges, Socrates Mine, c. 9 mi. ENE of Geyserville 917 Comment
  UCD67319  Equisetum laevigatum D. Sanchez-Mata 1996-4-16 s.n. Sonoma Mercuryville. Big Sulphur Creek. The Geysers. Riparian forests. 400 Comment
  UCD167968  Equisetum telmateia subsp. braunii James A. Neilson Jr. 1981-3-8 3985 Sonoma Mayacamas Mountains, Wildhorse Ck. at road crossing. (Exact location unknown, coordinates estimated by label maker.) Comment
  CAS-BOT-BC187919  Eriastrum abramsii R. D. Stone 1983-6-1 514 Lake Slope ca. 1.0 mile WSW of Glenbrook, upper High Valley Creek drainage 853 Comment
  UCD158777  Ericameria nauseosa var. speciosa James A. Neilson Jr. 1974-8-1 3172 Lake Mayacmas Mountains, 250 yds southeast of Geyser Rock area, ca. 3 1/2 miles west of Whispering Pines, Lake County. (Elevation estimated by label maker using Google Earth.) 1097 Comment
  UCD158778  Erigeron inornatus James A. Neilson Jr. 19 Aug1974 2850 Sonoma Mayacmas Mountains, south of Geyser Rock. (Elevation estimated by label maker using Google Earth.) 1027 Comment
  CAS-BOT-BC224153  Eriodictyon californicum Walter Knight; Irja Knight 1963-12-27 469 Sonoma Summit, Pine Flat Rd. Comment
  UCD158782  Eriogonum compositum var. compositum James A. Neilson Jr. 1974-6-1 2775 Sonoma Mayacmas Mountains, Geyser Rock, northeastern Sonoma County. (Elevation estimated by label maker using Google Earth.) 1118 Comment
  UCD160469  Eriogonum compositum var. compositum James A. Neilson Jr. 1975-5-23 3311 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160838  Eriogonum dasyanthemum James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3483 Sonoma Section 10, the Geysers. (Exact location unknown. Elevation and coordinates estimated by label maker.) 388 Comment
  CDA30996  Eriogonum luteolum D. G. Kelch, Troy McGregor 2010-8-22 10 .356 Sonoma Nr Peak of Geyser Peak Rd. 0 Comment
  POM188345  Eriogonum luteolum Marcus E. Jones 1931-7-5 28828 Sonoma The Geysers. Comment
  UCR42305  Eriogonum luteolum var. luteolum L. F. LaPre 1985-6-5 s.n. Sonoma Socrates Mine, c. 9 mi. ENE of Geyserville 976 Comment
  CHSC107500  Eriogonum vimineum D. G. Kelch; Troy McGregor 2010-8-22 10 .356 Sonoma Nr Peak of Geyser Peak Rd. Comment
  UCD158794  Eriogonum vimineum James A. Neilson Jr. 1974-6-1 3055 Sonoma Mayacmas Mountains, Geyser Rock, northeast Sonoma County. (Elevation estimated by label maker using Google Earth.) 1118 Comment
  UCD160124  Eriogonum vimineum James A. Neilson Jr. 1974-6-1 2757 Sonoma Mayacmas Mountains, 1/4 mile south of Geyser Rock, west of Whispering Pines. (Elevation and coordinates estimated by label maker.) 1082 Comment
  UCD160467  Eriogonum vimineum James A. Neilson Jr. 1975-5-23 3315 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160898  Eriophyllum lanatum James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3286 Sonoma Mayacmas Mountains, adjacent to Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottlerock Road, east Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCR42312  Eriophyllum lanatum L. F. LaPre 1985-6-25 s.n. Sonoma Coast Ranges, Socrates Mine, c. 9 mi. ENE of Geyserville 917 Comment
  HSC5595  Eriophyllum lanatum var. achilleoides R. Spellenberg 1964-6-15 403 Sonoma 5 mi. W of The Geysers on road from Geyserville Comment
  UCD160896  Erodium cicutarium James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3420 Sonoma Mayacmas Mountains, Caldwell Pines area, ca. 3 1/2 miles west of Glenbrook and Bottlerock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD167023  Eryngium aristulatum James Neilson 1981-8-21 4043 Sonoma Mayacmas Mountains. Abril property, 1/4 mi. east of headwaters of Truit Creek. (Exact location unknown, coordinates estimated by label maker.) Comment
  GH379516  Erysimum capitatum 1884-5-19 Unknown Geysers Comment
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Dec 18 2015
  UCD151233  Erysimum capitatum James A. Neilson Jr. 1974-5-17 2949 Lake Lake County (on county line between Sonoma and Lake counties): Mayacmas Mountains, county line ridge, 1/4 mile north of Geyser Rock, 3 1/2 miles west of Whispering Pines and State Highway 175. (Elevation estimated using Google Earth by label maker.) 975 Comment
  UCD160317  Erysimum capitatum James A. Neilson Jr. 1975-5-14 3573 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UC1299356  Erythronium californicum Freed W. Hoffman 1947-4-20 1866 Sonoma near Mercury (Geysers to Healdsburg); North Coast Ranges Comment
  UCD151111  Erythronium californicum James A. Neilson Jr. 1974-6-1 2938 Sonoma Mayacmas Mountains, Mercuryville, The Geysers Road. (Elevation estimated by label maker using Google Earth.) 822 Comment
  CAS-BOT-BC133295  Erythronium helenae Walter Knight; Irja Knight; Dr. Steve Edwards 1986-3-24 5256 Sonoma Between Mercuryville and Geysers Resort jct. Comment
  CAS-BOT-BC133297  Erythronium helenae F. H. Utech; W. Knight; I. Knight 1986-5-15 86 -199 Sonoma The Geysers, ca 14.0 mi ESE of Preston and US hwy 101 on Geysers Road 800 Comment
  CHSC59837  Erythronium helenae Leo Edson 1984-4-19 6 Lake 100yds, s of hot springs creek. 792 Comment
  UCD151240  Erythronium helenae James A. Neilson Jr. 1974-5-14 3475 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Elevation estimated using Google Earth by label maker.) 853 Comment
  UCD158788  Eschscholzia californica James A. Neilson Jr. 1974-6-1 2882 Sonoma Mayacmas Mountains, Geyser Rock, west of Whispering Pines, northeastern Sonoma County. (Elevation estimated by label maker using Google Earth.) 1118 Comment
  UCR45080  Eschscholzia californica L. F. LaPre 1986-7-29 s.n. Sonoma Socrates Mine, c. 9 mi ENE of Geyserville 976 Comment
  UCD158779  Eurybia radulina James A. Neilson Jr. 1974-8-19 2850 a Sonoma Mayacmas Mountains, Geyser Rock. West of Whispering Pines, in the vicinity of the boundary line of Sonoma and Lake Counties. (Elevation estimated by label maker using Google Earth.) 1118 Comment
  UCD151103  Festuca californica James A. Neilson Jr. 1973-6-3 2961 Sonoma Mayacmas Mountains. The Geysers. Site I. (Location and elevation of Site I estimated from Neilson 2994 which has Township/Range data and says that Site I is in Geyser Canyon. Coordinates estimated by label maker.) 853 Comment
  UCD158854  Festuca californica James A. Neilson Jr.; Teresa A. Sholars 1974-12-26 2917 Sonoma The Geysers, southeast corner of Section 14. (Elevation estimated by label maker using Google Earth.) 716 Comment
  UCD160320  Festuca californica James A. Neilson Jr. 1975-5-14 3581 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD161372  Festuca californica James A. Neilson Jr. 1976-6-18 s.n. Sonoma Mayacmas Mountains. Ridge between Squaw Creek and Big Sulphur Creek, (Elevation and exact location estimated by label maker.) 731 Comment
  UCD151131  Festuca idahoensis James A. Neilson Jr. 1973-6-6 2976 Sonoma Mayacmas Mountains. The Geysers. Site III. [Location of Site III at The Geysers taken from Neilson 3115 which gave the Township/Range of the location. Elevation and coordinates estimated by label maker.] 731 Comment
  UCD160609  Festuca idahoensis James A. Neilson Jr. 1975-6-5 3236 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD151089  Festuca occidentalis James A. Neilson Jr. 1973-6-3 2960 Sonoma Mayacmas Mountains. The Geysers. Site I. (Location and elevation of Site I estimated from Neilson 2994 which has Township/Range data and says that Site I is in Geyser Canyon. Coordinates estimated by label maker.) 853 Comment
  UCD160880  Frangula californica James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3274 Sonoma Mayacmas Mountains, ca. 1/4 mile south of Caldwell Pines, ca. 3 1/2 miles west of Whispering Pines, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD163167  Frangula californica James A. Neilson Jr. 1984-6-8 s.n. Lake Mayacmas Mountains, Lesperance Road. [Exact location unknown. Coordinates estimated by label maker. Location taken from map of California Energy Commission District Three geothermal basemap showing L'Esperance leasehold.] Comment
  CAS-BOT-BC53280  Frangula californica subsp. californica James McMurphy 1909-5-29 s.n. Sonoma Grade, ridge south of the Geysers Comment
  UCD158845  Frangula californica subsp. crassifolia James A. Neilson Jr.; Teresa A. Sholars 1974-12-29 2912 Sonoma The Geysers, west central part of Section 15. (Elevation estimated by label maker using Google Earth.) 723 Comment
  UCD160614  Fraxinus latifolia James A. Neilson Jr. 1975-6-5 3336 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD151239  Fritillaria affinis James A. Neilson Jr. 1974-4-30 2728 Sonoma Mayacmas Mountains, upper Squaw Creek. (Elevation estimated using Google Earth by label maker.) 975 Comment
  CHSC40038  Fritillaria recurva Michener; Bioletti 1893-4-1 Sonoma Hood Peak. Comment
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Jan 1 2012
  UCD160315  Fritillaria recurva James A. Neilson Jr. 1975-5-14 3476 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160716  Fritillaria recurva James A. Neilson Jr. 1975-5-23 3185 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCR42317  Fritillaria recurva var. coccinea L. F. LaPre 1986-3-30 s.n. Sonoma Socrates Mine, c. 9 mi. ENE of Geyserville 976 Comment
  UCD151094  Galium andrewsii James A. Neilson Jr. 1974-6-1 3552 Sonoma Mayacmas Mountains, 1/4 mi. south of Geyser Rock area, east Sonoma County. (Elevation estimated by label maker using Google Earth.) 1027 Comment
  UCD151225  Galium andrewsii James A. Neilson Jr. 1974-5-17 3170 Lake Border of Lake and Sonoma Counties: Mayacmas Mountains, county line ridge 1/4 mile south of Geyser Rock. (Elevation estimated using Google Earth by label maker.) 1066 Comment
  UCD160111  Galium aparine James A. Neilson Jr. 1973-6-3 2998 Sonoma Mayacmas Mountains. The Geysers. Site I. (Location and elevation of Site I estimated from Neilson 2994 which has Township/Range data and says that Site I is in Geyser Canyon. Coordinates estimated by label maker.) 853 Comment
  CDA30960  Galium bolanderi D. G. Kelch, Troy McGregor 2010-8-22 10 .358 Sonoma Nr Peak of Geyser Peak Rd. 0 Comment
  UCD158783  Galium bolanderi James A. Neilson Jr. 1974-6-1 2768 Sonoma Mayacmas Mountains, Geyser Rock, northeastern Sonoma County. (Elevation estimated by label maker using Google Earth.) 1118 Comment
  UCD151207  Galium californicum James A. Neilson Jr. 1974-8-22 3440 Lake On border between Lake and Sonoma Counties: Mayacmas Mountains, southeast of Geyser Rock, west of Whispering Pines. (Elevation estimated using Google Earth by label maker.) 1249 Comment
  UCD160295  Galium californicum James A. Neilson Jr. 1974-5-24 2879 Sonoma Mayacmas Mountains, Geyser Rock, northeast Sonoma County. (Elevation and georeferencing estimated by label maker.) 1127 Comment
  UCD151154  Galium nuttallii James A. Neilson Jr. 1973-6-7 3563 Sonoma Mayacmas Mountains. The Geysers. Site IV. (Exact location of Site IV unknown. Elevation and coordinates very broadly estimated by label maker.) 441 Comment
  UCD160856  Galium nuttallii James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3277 Sonoma Mayacmas Mountains, Caldwell Pines area, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD39139  Galium parisiense Beecher Crampton 1964-8-18 7148 Sonoma N.E. part of county. 'The Geysers', Big Sulphur Creek. Comment
  UCD160113  Galium trifidum subsp. subbiflorum James A. Neilson Jr. 1973-6-3 2997 Sonoma Mayacmas Mountains. The Geysers. Site I. (Location and elevation of Site I estimated from Neilson 2994 which has Township/Range data and says that Site I is in Geyser Canyon. Coordinates estimated by label maker.) 853 Comment
  CAS-BOT-BC182161  Garrya fremontii Walter Knight; Irja Knight 1963-12-27 465 Sonoma Summit, Pine Flat Rd. Comment
  CAS-BOT-BC182164  Garrya fremontii Walter Knight; Irja Knight 1963-12-27 466 Sonoma Summit, Pine Flat Rd. Comment
  CAS-BOT-BC182165  Garrya fremontii James McMurphy 1909-5-29 s.n. Sonoma Grade between Black Mountain and Geyser Mountain Comment
  CDA31007  Garrya fremontii D. G. Kelch, Troy McGregor 2010-8-22 10 .349 Sonoma Nr Peak of Geyser Peak Rd. 0 Comment
  CDA31016  Garrya fremontii D. G. Kelch, Troy McGregor 2010-8-22 10 .349 Sonoma Nr Peak of Geyser Peak Rd. 0 Comment
  UCD160881  Garrya fremontii James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3264 Sonoma Mayacmas Mountains, adjacent to Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottlerock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  POM188277  Gastridium phleoides Marcus E. Jones 1931-7-5 29208 Sonoma The Geysers. Comment
  UCD66549  Gastridium phleoides Beecher Crampton 1964-8-18 7147 Sonoma N.e. Sonoma County: The Geysers, Big Sulphur Creek. Comment
  UC1023580  Gastridium ventricosum Virginia Bufford 1936-5-21 361 Sonoma Geysers-Cloverdale Rd. Comment
  UC971691  Gastridium ventricosum Leo Koch 1940-4-22 837 Sonoma above Sulfur Creek Geysers; above Sulfur Creek Geysers Comment
  UCD160843  Genista monspessulana James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3375 Sonoma Section 10, One-quarter mile west of Eagle Rock on Geysers Road, The Geysers. (Elevation and coordinates estimated by label maker) 457 Comment
  UCD160483  Geranium dissectum James A. Neilson Jr. 1975-5-23 3325 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD158810  Gilia capitata James A. Neilson Jr. 1974-4-16 2872 Sonoma Mayacmas Mountains. Big Geysers. (Elevation estimated using topo map by label maker.) 548 Comment
  UCD160142  Gilia capitata James A. Neilson Jr. 1973-6-7 3045 Sonoma Mayacmas Mountains. Big Geysers. (Elevation estimated using Google Earth by label maker.) 548 Comment
  UCD160216  Gilia capitata James A. Neilson Jr. 1974-5-17 2867 Sonoma On the border of Lake and Sonoma Counties: Mayacmas Mountains, Geyser Rock area, west of Whispering Pines and State Highway 175. (Elevation estimated by label maker.) 1115 Comment
  UCR50513  Gilia leptalea L. F. LaPre, K. Campbell 1987-6-28 s.n. Sonoma North Coast Ranges, Cadd Fire Trail, off Unocal Ridge Road, 2 mi. west of Socrates Mine, near Lake county line 976 Comment
  UCD160144  Gilia tricolor James A. Neilson Jr. 1974-4-16 2871 Sonoma Mayacmas Mountains. Sulphur bank number 13. (Elevation estimated using Google Earth by label maker.) 487 Comment
  UCD166998  Githopsis diffusa subsp. robusta James A. Neilson Jr. 1984-5-30 s.n. Sonoma Mayacamas Mountains, Wildhorse, Caldwell Pines (Exact location unknown, coordinates estimated by label maker. Georeferenced near Wildhorse Cr., Neilson collection from 1975 are from Wildhorse #1 in the Caldwell Pines area.) Comment
  UCD158813  Githopsis specularioides James A. Neilson Jr. 1974-4-16 3578 Sonoma Mayacmas Mountains. Big Geysers. (Elevation estimated using topo map by label maker.) 548 Comment
  CAS-BOT-BC280596  Glyceria elata R. D. Stone; G. Clifton 1983-6-16 557 Lake Along Lee Creek immediately above Sawmill Flat Rd., upper Alder Creek drainage, ca. 1.4 mi. NNW of summit Cobb Mt. 914 Comment
  UCD158823  Grindelia James A. Neilson Jr.; Teresa A. Sholars 1974-12-28 2896 Sonoma northwest corner of Section 14, The Geysers. (Elevation estimated by label maker using Google Earth.) 472 Comment
  CAS-BOT-BC305182  Grindelia hirsutula Marcus E. Jones 1931-7-5 29142 Sonoma The Geysers Comment
  CAS-BOT-BC305198  Grindelia hirsutula Marcus E. Jones 1931-7-5 29142 Sonoma The Geysers Comment
  UC479502  Grindelia hirsutula Marcus E. Jones, A. M. 1931-7-5 29142 Sonoma The Geysers Comment
  POM187850  Grindelia hirsutula var. davyi Marcus E. Jones 1931-7-5 29142 Sonoma The Geysers. Comment
  UCD160836  Grindelia nana James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3371 a Sonoma Section 10, the Geysers. (Exact location unknown. Elevation and coordinates estimated by label maker.) 388 Comment
  UCR50519  Grindelia nana L. F. LaPre, K. Campbell 1987-6-28 s.n. Sonoma North Coast Ranges, Cadd Fire Trail, off Unocal Ridge Road, 2 mi. west of Socrates Mine, near Lake county line 976 Comment
Read comments
Aug 29 2007
  CAS-BOT-BC309586  Helenium puberulum Marcus E. Jones 1931-7-5 29104 Sonoma The Geysers Comment
  UC479400  Helenium puberulum Marcus E. Jones, A. M. 1931-7-5 29104 Sonoma The Geysers Comment
  UCD158776  Helenium puberulum James A. Neilson Jr. 1974-7-10 3172 a Sonoma Mayacmas Mountains, 1/4 mi. south of Geyser Rock area. (Elevation estimated by label maker using Google Earth.) 1027 Comment
  UCD160616  Helianthella californica James A. Neilson Jr. 1975-6-5 3339 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD160662  Helianthella californica James A. Neilson Jr. 1975-6-5 3340 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  CAS-BOT-BC305580  Helianthus bolanderi R. Bacigalupi 1948-3-6 2583 Sonoma The Geysers, just above the resort Comment
  CAS-BOT-BC305581  Helianthus bolanderi Volney Rattan 1877-6-26 s.n. Sonoma Geysers Comment
  CAS-BOT-BC305582  Helianthus bolanderi R. Bacigalupi 1948-3-6 2583 Sonoma The Geysers, just above the resort Comment
  CAS-BOT-BC305583  Helianthus bolanderi Walter Knight; Irja Knight 1968-1-1 2271 Sonoma Geysers Resort Comment
  POM187930  Helianthus bolanderi Marcus E. Jones 1931-7-5 29121 Sonoma The Geysers. Comment
  UC754291  Helianthus bolanderi R. Bacigalupi 1948-3-6 2853 Sonoma The Geysers, just above the resort. Comment
  UCD158804  Helianthus bolanderi James A. Neilson Jr. 1974-3-27 2942 Sonoma Mayacmas Mountains. Big Geysers. (Elevation estimated using topo map by label maker.) 548 Comment
  UCD160867  Hemizonella minima James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3419 Sonoma Mayacmas Mountains, Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD168048  Hemizonia congesta James Neilson 1981-7-1 4043 Sonoma Mayacmas Mountains, entrance to Unit 15. (Exact location unknown. Coordinates estimated by label maker. Unit 15 is PG and E Power Plant 15 (retired).) Comment
  UCR45079  Hemizonia congesta L. F. LaPre 1986-7-29 s.n. Sonoma Socrates Mine, c. 9 mi ENE of Geyserville 976 Comment
  CAS-BOT-BC309952  Hemizonia congesta subsp. luzulifolia J. McMurphy 1909-5-29 s.n. Sonoma Summit between Geyserville and the Geysers Comment
  CDA30997  Hemizonia congesta subsp. luzulifolia D. G. Kelch, Troy McGregor 2010-8-22 10 .352 Sonoma Nr Peak of Geyser Peak Rd. 0 Comment
  CHSC107539  Hemizonia congesta subsp. luzulifolia D. G. Kelch; Troy McGregor 2010-8-22 10 .352 Sonoma Nr Peak of Geyser Peak Rd. Comment
  SD124916  Hemizonia congesta subsp. luzulifolia L. F. LaPre 1986-7-29 Sonoma Socrates Mine, ca. 9 miles eastnortheast of Geyserville. 915 Comment
  UC990612  Hemizonia congesta subsp. luzulifolia James I. McMurphy 1909-5-29 Sonoma summit between Geyserville and The Geysers Comment
  UCD158829  Hemizonia congesta subsp. luzulifolia James A. Neilson Jr.; Teresa A. Sholars 1974-12-26 2926 Sonoma The Geysers, Section 14. (Elevation and coordinates estimated by label maker.) 533 Comment
  UC72228  Hesperocnide tenella Milo S. Baker Sonoma Auburn or Geysers (Sonoma Co.) Comment
  UCR49205  Hesperolinon L. F. LaPre 1987-7-30 s.n. Sonoma Socrates Mine, c. 9 mi. ENE of Geyserville 976 Comment
  UC1212230  Hesperolinon adenophyllum Milo S. Baker 1940-7-2 9764 Lake in marshy spot near Glenbrook; Inner North Coast Ranges, Cobb Valley Comment
  UCD167528  Hesperolinon californicum James Neilson 1979-6-26 3980 Sonoma Mayacmas Mountains, between Big and Little Sulphur Creeks, about 3/4 miles north Contact Mine, northwest Socrates Mine. (Exact location unknown. Coordinates estimated by label maker.) Comment
  UCD167005  Hesperolinon clevelandii James A. Neilson Jr. 1984-6-1 s.n. Lake On the border of Lake and Sonoma Counties: Mayacmas Mountains, Caldwell Pines. (Exact location unknown, coordinates estimated by label maker.) Comment
  UC1212404  Hesperolinon spergulinum F. W. Hoffman 1950-6-16 3615 Sonoma near Mercuryville (on road from Healdsburg to Big Geysers) Comment
  UC762262  Hesperolinon spergulinum R. F. Hoover 1942-7-6 5913 Sonoma ridge s The Geysers Comment
  UCD160127  Hieracium albiflorum James A. Neilson Jr. 1973-6-6 3559 Sonoma Mayacmas Mountains. The Geysers. Site III. [Location of Site III at The Geysers taken from Neilson 3115 which gave the Township/Range of the location. Elevation and coordinates estimated by label maker.] 731 Comment
  UCD160864  Hieracium albiflorum James A. Neilson Jr.; Teresa A. Sholars 1975-6-27 3299 Sonoma Mayacmas Mountains, Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  CDA30998  Hoita macrostachya D. G. Kelch, Troy McGregor 2010-8-22 10 .351 Sonoma Nr Peak of Geyser Peak Rd. 0 Comment
  UC75509  Holodiscus discolor Milo S. Baker 1898-6-11 677 Sonoma Geyser Canyon Comment
  UCD151133  Holodiscus discolor James A. Neilson Jr. 1973-6-6 3115 Sonoma Mayacmas Mountains. The Geysers. Site III. [Elevation and coordinates estimated by label maker.] 731 Comment
  UCD160121  Holodiscus discolor James A. Neilson Jr. 1973-6-3 2994 Sonoma Mayacmas Mountains. The Geysers. Site I. Geyser Canyon, ca. 1 mi N of Geysers Resort. (Coordinates estimated by label maker.) 853 Comment
  UCD160123  Holodiscus discolor James A. Neilson Jr. 1973-6-6 2996 Sonoma Mayacmas Mountains. The Geysers. 1/2 mile N of The Geysers Resort. (Elevation and coordinates estimated by label maker.) 731 Comment
  UCD160813  Holodiscus discolor James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3363 Sonoma Section 10, ca. 1 1/2 miles west of The Geysers, 50 feet south of the Geysers Road. (Exact location unknown. Elevation and coordinates estimated by label maker..) 396 Comment
  UCD160857  Holodiscus discolor James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3267 Sonoma Mayacmas Mountains, ca, 1/2 mile south of Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD160471  Hordeum brachyantherum James A. Neilson Jr. 1975-5-23 3327 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160643  Hordeum brachyantherum James A. Neilson Jr. 1975-6-5 3238 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Elevation, location, and coordinates estimated by label maker.) 792 Comment
  UCD160485  Hordeum brachyantherum subsp. californicum James A. Neilson Jr. 1975-5-23 3190 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160894  Hosackia crassifolia James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3273 Sonoma Mayacmas Mountains, Caldwell Pines area, ca. 3 1/2 miles west of Glenbrook and Bottlerock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD161442  Hosackia crassifolia James A. Neilson Jr. 1975-7-8 3385 Sonoma Mayacmas Mountains; west of Alder Creek, vicinity of Geyser Rock; northeast Sonoma County, (Coordinates and elevation estimated by label maker.) 1097 Comment
  UCD161440  Hosackia stipularis James A. Neilson Jr. 1975-7-8 3391 Lake Mayacmas Mountains; there are two conflicting sets of location notes for this specimen. In the Flora of the Mayacmas Mtns., Neilson cited the following location: 1/4 mile south of Geyser Peak (which is in Sonoma County). The notes on the specimen itself say: western portion of Geyser Rock, western Lake County (he must have meant eastern portion of Geyser Rock, or he would have been in Sonoma County). As all his other specimens from this date were collected in western Lake County east of Geyser Rock, we are using that location. (Coordinates and elevation estimated by label maker.) 1089 Comment
  UC19034  Hypericum concinnum H. N. Bolander 1864-1 3948 Sonoma at the Geysers Comment
  UCD160874  Hypericum concinnum James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3269 Sonoma Mayacmas Mountains, Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD160833  Hypericum perforatum subsp. perforatum James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3355 Sonoma Section 10, the Geysers. (Exact location unknown. Elevation and coordinates estimated by label maker.) 388 Comment
  CAS-BOT-BC401325  Hypericum scouleri Volney Rattan 1877-6-26 s.n. Sonoma Geysers Comment
  UCD160128  Iris macrosiphon James A. Neilson Jr. 1973-6-6 3566 Lake Mayacmas Mountains. Geyser Rock. Site III B. Ca. 3.5 miles west of Whispering Pines. (Elevation and coordinates estimated by label maker.) 1097 Comment
  UCD160665  Iris macrosiphon James A. Neilson Jr. 1975-6-5 3345 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  JEPS129168  Isoetes howellii Jake Ruygt 2015-5-2 6086 e Napa West of Buck Mountain near Nevada. Knoxville 7.5' Quad. Comment
  UCD161818  Juncus James A. Neilson Jr. 1975-6-5 3245 Lake Mayacmas Mountains, High Valley Creek. (Exact location unknown. Coordinates, estimated by label maker as being in Francisco Property where other collections were made on this date.) Comment
  UCD161819  Juncus James A. Neilson Jr. 1975-6-5 3245 a Lake Mayacmas Mountains, High Valley Creek. (Exact location unknown. Coordinates, estimated by label maker as being in Francisco Property where other collections were made on this date.) Comment
  UCD161820  Juncus James A. Neilson Jr. 1975-6-5 3231 Lake Mayacmas Mountains, High Valley Creek. (Exact location unknown. Coordinates, estimated by label maker as being in Francisco Property where other collections were made on this date.) Comment
  UCD161821  Juncus James A. Neilson Jr. 1975-6-5 3232 Lake Mayacmas Mountains, High Valley Creek. (Exact location unknown. Coordinates, estimated by label maker as being in Francisco Property where other collections were made on this date.) Comment
  UCD160827  Juncus effusus subsp. pacificus James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3436 Sonoma Section 10, the Geysers. (Exact location unknown. Elevation and coordinates estimated by label maker.) 388 Comment
  UCD160848  Juncus effusus subsp. pacificus James A. Neilson Jr.; Teresa A. Sholars 1975-6-27 3288 Sonoma Mayacmas Mountains, Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  GH364852  Juncus hemiendytus J. T. Howell 1943-5-11 18031 Unknown 8.9 miles south of Kelseyville Comment
  UCD160828  Juncus patens James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3435 Sonoma Section 10, the Geysers. (Exact location unknown. Elevation and coordinates estimated by label maker.) 388 Comment
  UCD161842  Juncus xiphioides James A. Neilson Jr. 1974-7-10 2816 Sonoma Mayacmas Mountains, 1/4 mi. south of Geyser Rock. (Exact location unknown. Coordinates and elevation estimated by label maker.) 1027 Comment
  CAS-BOT-BC488338  Keckiella corymbosa James A. Neilson, Jr. 1974-7-10 2824 Sonoma Mayacmas Mountains, W of Cobb Mountain, along road to PG&E geothermal units 9 and 10, eastern Sonoma Co. 960 Comment
  UCD151192  Keckiella corymbosa James A. Neilson Jr. 1974-7-10 2824 Sonoma Mayacmas Mountains, west of Cobb Mountain, along road to PG and E geothermal units 9 and 10, eastern Sonoma County. (Elevation estimated using topo map by label maker.) 960 Comment
  UCD167949  Lactuca ludoviciana James Neilson 1984-5-30 4104 Mendocino Mayacmas Mountains. 1/2 mile south Caldwell Pines, Cold Water Canyon Power Plant site. (Exact location unknown. Coordinates estimated by label maker.) Comment
  UCD167951  Lactuca ludoviciana James Neilson 1984-5-30 4104 Mendocino Mayacmas Mountains. 1/2 mile south Caldwell Pines, Cold Water Canyon Power Plant site. (Exact location unknown. Coordinates estimated by label maker.) Comment
  UCD151151  Lamarckia aurea James A. Neilson Jr. 1973-6-7 2963 Sonoma Mayacmas Mountains. The Geysers. Big Geysers. Site IV-G. (Elevation and exact location estimated by label maker.) 441 Comment
  UCD151185  Lamarckia aurea James A. Neilson Jr. 1974-4-17 2983 Sonoma Mayacmas Mountains. Big Geysers. (Elevation estimated using Google Earth by label maker.) 548 Comment
  UCD63290  Lamarckia aurea Beecher Crampton 1964-8-18 7146 Sonoma n.e. Sonoma County: The Geysers, Big Sulphur Creek. Comment
  UCD158815  Lasthenia californica subsp. californica James A. Neilson Jr. 1974-4-17 3056 Sonoma Mayacmas Mountains. Big Geysers. (Elevation estimated using topo map by label maker.) 548 Comment
  UCD151309  Lathyrus vestitus var. vestitus James A. Neilson Jr. 1974-4-30 2722 Sonoma Mayacmas Mountains. The Geysers. Bruno # 1. (Exact location of Bruno #1 not known by label-maker, but according to Neilson, it is west of Geysers Resort on a north-facing slope near a stream. In the Mayacmas Flora, he indicates it is near 'Old Mercuryville,' which is different than the Mercuryville seen on maps; location and elevation estimated by label-maker) 441 Comment
  UCD160301  Layia septentrionalis James A. Neilson Jr. 1975-5-22 3222 Lake Mayacmas Mountains, Geyser Rock area, in the vicinity of the boundary line of Sonoma and Lake Counties. (Coordinates and elevation estimated by label maker.) 1118 Comment
  UCD161377  Lepechinia calycina James A. Neilson Jr. 1976-6-18 s.n. Sonoma Mayacmas Mountains. Crest of ridge between Squaw Creek and Big Sulphur Creek. (Elevation and exact location estimated by label maker.) 731 Comment
  CAS-BOT-BC89771  Lepidium latipes R. D. Stone 1983-5-26 511 Lake At roadside on High Valley Road, near Alder Creek, ca. 0.5 mile south of Glenbrook. 716 Comment
  UCD160331  Leptosiphon acicularis James A. Neilson Jr. 1975-5-14 3457 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD158801  Leptosiphon androsaceus James A. Neilson Jr. 1969-4-16 2869 Sonoma Mayacmas Mountains. Big Geysers. (Elevation estimated using topo map by label maker.) 548 Comment
  UCD158816  Leptosiphon androsaceus James A. Neilson Jr. 1974-4-17 2870 Sonoma Mayacmas Mountains. Big Geysers. (Elevation estimated using topo map by label maker.) 548 Comment
  UCD160334  Leptosiphon bicolor James A. Neilson Jr. 1975-5-15 3456 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  POM187316  Ligusticum apiifolium Marcus E. Jones 1931-7-5 29076 Sonoma The Geysers. Comment
  UCD161438  Ligusticum apiifolium James A. Neilson Jr. 1975-7-8 3400 Lake Mayacmas Mountains; west of Alder Creek, western portion of Geyser Rock [Neilson meant eastern portion of Geyser Rock or he would have been in Sonoma County]. (Coordinates and elevation estimated by label maker.) 1089 Comment
  UCD160808  Lilium pardalinum James A. Neilson Jr. 1975-5-23 3198 Sonoma Mayacmas Mountains. Big Sulphur Creek, Abril property. (Elevation, and coordinates estimated by label maker). 548 Comment
  UCD160449  Lithophragma heterophyllum James A. Neilson Jr. 1975-5-14 3467 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD167355  Lomatium californicum James Neilson 1981-5-28 4036 Sonoma Mayacmas Mountains. The Geysers. Vicinity of PG and E lookout. (Exact location unknown. Coordinates estimated by label maker.) Comment
  UCD167360  Lomatium californicum James Neilson 1981-5-28 4036 Sonoma Mayacmas Mountains. The Geysers. Vicinity of PG and E lookout. (Exact location unknown. Coordinates estimated by label maker.) Comment
  UCR45090  Lomatium dasycarpum L. F. LaPre 1986-3-30 s.n. Sonoma Socrates Mine, c. 9 mi. ENE of Geyserville 976 Comment
  UCD151087  Lomatium marginatum James A. Neilson Jr. 1974-6-1 2774 Sonoma Mayacmas Mountains, Geyser Rock, northeast Sonoma County. (Elevation estimated by label maker using Google Earth.) 1127 Comment
  UCD160719  Lomatium repostum James A. Neilson Jr. 1975-5-24 3180 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD160831  Lonicera interrupta James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3365 Sonoma Section 10, the Geysers. (Exact location unknown. Elevation and coordinates estimated by label maker.) 388 Comment
  UCD160882  Lonicera interrupta James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3270 Sonoma Mayacmas Mountains, ca. 1/4 mile south of Caldwell Pines, ca. 3 1/2 miles west of Glenbrook, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  CDA31015  Lotus crassifolius D. G. Kelch, Troy McGregor 2010-8-22 10 .346 Sonoma Nr Peak of Geyser Peak Rd. 0 Comment
  UCR44916  Lotus humistratus L. F. LaPre 1986-5-31 s.n. Sonoma Socrates Mine, c. 9 mi ENE of Geyserville 976 Comment
  CDA31006  Lotus purshianus D. G. Kelch, Troy McGregor 2010-8-22 10 .357 Sonoma Nr Peak of Geyser Peak Rd. 0 Comment
  UC1299684  Lupinus adsurgens Freed W. Hoffman 1949-6-5 3218 Sonoma summit of road leading from Lake County to Pine Flat; North Coast Ranges, rd fr Lake County to Pine Flat Comment
  UCD151110  Lupinus adsurgens James A. Neilson Jr. 1974-6-1 2763 Sonoma Mayacmas Mountains, 1/4 mi. south of Geyser Rock, east Sonoma County. (Elevation estimated by label maker using Google Earth.) 1027 Comment
  UCD160666  Lupinus adsurgens James A. Neilson Jr. 1975-6-5 3247 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD151311  Lupinus albifrons var. collinus James A. Neilson Jr. 1974-4-30 2727 Sonoma Mayacmas Mountains. Geyser-Healdsburg Road, 1/2 mile north of Culver Baer Mine. (Elevation estimated by label-maker using topo map.) 853 Comment
  HSC14798  Lupinus bicolor R. Spellenberg, D. Sutherland, , A. Sylvester 1966-3-26 1338 Sonoma 7 mi. W of Big Geysers along Sulphur Creek Rd. Comment
  UCD160714  Lupinus bicolor James A. Neilson Jr. 1975-6-5 3255 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  POM186932  Lupinus densiflorus var. aureus Marcus E. Jones 1931-7-5 28954 Sonoma The Geysers. Comment
  UCD151109  Lupinus latifolius James A. Neilson Jr. 1974-6-1 2764 Sonoma Mayacmas Mountains, 1/4 mi. south of Geyser Rock, east Sonoma County. (Elevation estimated by label maker using Google Earth.) 1027 Comment
  UCD160663  Lupinus latifolius James A. Neilson Jr. 1975-6-5 3317 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UC479108  Lupinus luteolus Marcus E. Jones, A. M. 1931-7-5 28954 Sonoma The Geysers Comment
  UCD151181  Lupinus nanus James A. Neilson Jr. 1974-4-16 3114 Sonoma Mayacmas Mountains. Sulphur bank number 13. (Elevation estimated using Google Earth by label maker.) 487 Comment
  UCD151182  Lupinus nanus James A. Neilson Jr. 1974-4-16 3064 Sonoma Mayacmas Mountains. Sulphur bank number 13. (Elevation estimated using Google Earth by label maker.) 487 Comment
  UCD160615  Lupinus succulentus James A. Neilson Jr. 1975-6-5 3346 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD160116  Luzula James A. Neilson Jr. 1973-6-3 2973 Sonoma Mayacmas Mountains. The Geysers. Site I. (Location and elevation of Site I estimated from Neilson 2994 which has Township/Range data and says that Site I is in Geyser Canyon. Coordinates estimated by label maker.) 853 Comment
  UCD160141  Luzula subsessilis James A. Neilson Jr. 1974-3-27 3017 Sonoma Mayacmas Mountains. The Geysers. Site A-8. (Elevation estimated using Google Earth by label maker.) 426 Comment
  UCD161671  Luzula subsessilis James A. Neilson Jr. 1974-4-30 2724 Sonoma Mayacmas Mountains. The Geysers. Bruno # 1. (Exact location of Bruno #1 not known by label-maker, but according to Neilson, it is west of Geysers Resort on a north-facing slope near a stream. In the Mayacmas Flora, he indicates it is near 'Old Mercuryville,' which is different than the Mercuryville seen on maps; location and elevation estimated by label-maker) 441 Comment
  UCD151069  Lythrum hyssopifolia James A. Neilson Jr. 1974-6-1 3057 Sonoma Mayacmas Mountains, Geyser Rock area, in the vicinity of the boundary line of Sonoma and Lake Counties. (Elevation estimated by label maker using Google Earth.) 1118 Comment
  UCD151200  Lythrum hyssopifolia James A. Neilson Jr. 1974-7-10 2815 Sonoma Mayacmas Mountains, 1/4 mile south of Geyser Rock, west of Whispering Pines, northeast Sonoma County. (Elevation estimated using Google Earth by label maker.) 1082 Comment
  UCD158893  Lythrum hyssopifolia James A. Neilson Jr. 1975-4-28 3156 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Elevation estimated using Google Earth by label maker.) 853 Comment
  UCD160118  Madia anomala James A. Neilson Jr. 1973-6-3 3163 Sonoma Mayacmas Mountains. The Geysers. Site I. (Location and elevation of Site I estimated from Neilson 2994 which has Township/Range data and says that Site I is in Geyser Canyon. Coordinates estimated by label maker.) 853 Comment
  CDA31042  Madia elegans D. G. Kelch, Troy McGregor 2010-8-22 10 .355 Sonoma Nr Peak of Geyser Peak Rd. 0 Comment
  CHSC107497  Madia elegans D. G. Kelch; Troy McGregor 2010-8-22 10 .355 Sonoma Nr Peak of Geyser Peak Rd. Comment
  UCD151198  Madia elegans James A. Neilson Jr. 1974-7-10 2817 Sonoma Mayacmas Mountains, 1/4 mile south of Geyser Rock, eastern Sonoma County. (Elevation estimated using Google Earth by label maker.) 1082 Comment
  UCD151199  Madia gracilis James A. Neilson Jr. 1974-7-10 3577 Sonoma Mayacmas Mountains, 1/4 mile south of Geyser Rock, west of Whispering Pines, northeast Sonoma County. (Elevation estimated using Google Earth by label maker.) 1082 Comment
  UCD160858  Madia gracilis James A. Neilson Jr.; Teresa A. Sholars 1975-6-27 3303 Sonoma Mayacmas Mountains, Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD158739  Malacothrix floccifera James A. Neilson Jr. 1973-7-10 2827 Sonoma Mayacmas Mountains. The Geysers. (Elevation estimated using Google Earth by label maker.) 441 Comment
  UCD160459  Malacothrix floccifera James A. Neilson Jr. 1975-5-23 3126 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160870  Marah James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3280 Sonoma Mayacmas Mountains, Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD151155  Medicago polymorpha James A. Neilson Jr. 1973-6-7 3443 Sonoma Mayacmas Mountains. The Geysers. Big Geysers. Site IV-G. (Elevation and exact location estimated by label maker.) 441 Comment
  UCD161374  Melica James A. Neilson Jr. 1976-6-18 s.n. Sonoma Mayacmas Mountains. Ridge between Squaw Creek and Big Sulphur Creek, (Elevation and exact location estimated by label maker.) 731 Comment
  UCD151224  Melica californica James A. Neilson Jr. 1974-5-17 2977 Sonoma Mayacmas Mountains, 1/4 mile south of Geyser Rock, along road to PG and E geothermal units 9 and 10, northeast Sonoma County. (Elevation estimated using Google Earth by label maker.) 1005 Comment
  UC933821  Melica geyeri Leo Koch 1940-4-22 830 Sonoma ca 0.5 mi from bridge over Little Sulphur Creek towards Mercuryville from the Geysers Mercuryville Comment
  UCD160976  Melica geyeri James A. Neilson Jr. 1975-7-8 3338 Sonoma Mayacmas Mountains. Socrates Mine. (Elevation and coordinates estimated by label maker.) 914 Comment
  UCD151086  Melica subulata James A. Neilson Jr. 1973-6-3 2983 Sonoma Mayacmas Mountains. The Geysers. Site I. (Location and elevation of Site I estimated from Neilson 2994 which has Township/Range data and says that Site I is in Geyser Canyon. Coordinates estimated by label maker.) 853 Comment
  UCD151137  Melica subulata James A. Neilson Jr. 1973-6-6 2962 Sonoma Mayacmas Mountains. The Geysers. Site IV. (Exact location of Site IV unknown. Elevation and coordinates very broadly estimated by label maker.) 441 Comment
  UCD160324  Melica subulata James A. Neilson Jr. 1975-5-14 3484 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD151184  Melica torreyana James A. Neilson Jr. 1974-4-17 3006 Sonoma Mayacmas Mountains. Big Geysers. (Elevation estimated using Google Earth by label maker.) 548 Comment
  UCD160493  Melica torreyana James A. Neilson Jr. 1975-5-23 3189 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD160463  Mentzelia dispersa James A. Neilson Jr. 1975-5-23 3314 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160698  Micropus californicus James A. Neilson Jr. 1975-6-5 3254 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  CAS-BOT-BC348673  Microseris acuminata John Thomas Howell 1943-5-11 18040 Lake 8.9 miles south of Kelseyville Comment
  UCD160330  Microsteris gracilis James A. Neilson Jr. 1975-5-14 3448 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD151206  Mimulus cardinalis James A. Neilson Jr. 1974-7-10 2821 Sonoma Mayacmas Mountains, 1/2 mile south of Geyser Rock, along road to PG and E unit 9 and 10, northeast Sonoma County. (Elevation estimated using Google Earth by label maker.) 1005 Comment
  UCD39137  Mimulus cardinalis Beecher Crampton 1964-8-18 7144 Sonoma N.E. 'The Geysers', Big Sulphur Creek. Comment
  UCD158892  Mimulus douglasii James A. Neilson Jr. 1975-4-15 3123 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Elevation estimated using Google Earth by label maker.) 853 Comment
  JEPS97610  Mimulus layneae R. D. Stone 1983-6-17 566 Lake Ridgeline dividing headwaters of Alder and High Valley creeks Geyser Rock (ca 1.2 mi NW of) 944 Comment
  UCD160487  Mimulus layneae James A. Neilson Jr. 1975-5-23 3317 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UC1239065  Mimulus microphyllus Freed W. Hoffman 1947-4-10 1890 Sonoma The Geysers North Coast Ranges Comment
  UCD151179  Mimulus microphyllus James A. Neilson Jr. 1974-4-16 2874 Sonoma Mayacmas Mountains. Big Geysers. (Elevation estimated using Google Earth by label maker.) 548 Comment
  UCD160625  Mimulus microphyllus James A. Neilson Jr. 1975-6-5 3234 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD160849  Mimulus microphyllus James A. Neilson Jr.; Teresa A. Sholars 1975-6-27 3296 Sonoma Mayacmas Mountains, Ca. 1/4 mile S of Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD39138  Mimulus pilosus Beecher Crampton 1964-8-18 7145 Sonoma N.E. Sonoma County: 'The Geysers', Big Sulphur Creek. Comment
  UCD158806  Minuartia douglasii James A. Neilson Jr. 1974-3-27 2957 Sonoma Mayacmas Mountains. Big Geysers. (Elevation estimated using topo map by label maker.) 548 Comment
  UCD160304  Minuartia douglasii James A. Neilson Jr. 1975-5-22 3221 Sonoma Mayacmas Mountains, Geyser Rock, ca. 3 mi. west of Whispering Pines, State Highway 175. (Elevation estimated by label maker using Google Earth.) 1127 Comment
  UCD167560  Monardella James A. Neilson Jr. 1976-6-18 s.n. Sonoma Mayacmas Mountains. On Squaw Creek. 1/4 mile from Black Hawk Ranch. (Exact location unkown. Coordinates estimated by label maker. Black Hawk Ranch location not found. Location georeferenced at the end of Ottobani Ridge between Big Sulphur Creek and Squaw Creek because neilson collected in that area on 18 June 1976.) Comment
  UCD167562  Monardella James A. Neilson Jr. 1976-6-18 s.n. Sonoma Mayacmas Mountains. 1/4 mile north of Black Hawk Ranch. Banks above Squaw Creek. (Exact location unkown. Coordinates estimated by label maker. Black Hawk Ranch location not found. Location georeferenced at the end of Ottobani Ridge between Big Sulphur Creek and Squaw Creek because neilson collected in that area on 18 June 1976.) Comment
  UCD159722  Monardella odoratissima subsp. pallida James A. Neilson Jr.; Teresa A. Sholars 1975-3-27 3290 Sonoma Mayacmas Mountains, Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, east Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD151083  Monardella sheltonii James A. Neilson Jr. 1974-6-1 2770 Sonoma Mayacmas Mountains, Geyser Rock, ca. 3 1/2 mi. west of Whispering Pines, northeast Sonoma County. (Elevation estimated by label maker using Google Earth.) 1127 Comment
  UCD151228  Monardella villosa James A. Neilson Jr. 1974-5-1 3170 Sonoma On the border of Lake and Sonoma Counties: Mayacmas Mountains, Geyser Rock area, west of Whispering Pines and State Highway 175. (Elevation estimated using Google Earth by label maker.) 1115 Comment
  UCD160824  Monardella villosa James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3362 Sonoma Section 10, the Geysers. (Exact location unknown. Elevation and coordinates estimated by label maker.) 388 Comment
  UC157914  Monardella villosa subsp. villosa Milo S. Baker 1898-6-12 651 Sonoma The Geysers Comment
  UC1995311  Monardella viridis Robert F. Hoover 1942-7-6 5912 Sonoma ridge s The Geysers Comment
  UCD151196  Monardella viridis James A. Neilson Jr. 1974-7-10 2810 Sonoma Mayacmas Mountains, Geyser Rock, ca. 3 1/2 miles west of Whispering Pines, east Sonoma County. (Elevation estimated using Google Earth by label maker.) 1115 Comment
  UCR42321  Monardella viridis L. F. LaPre 1985-6-25 s.n. Sonoma Coast Ranges, Socrates Mine, c. 9 mi. ENE of Geyserville 917 Comment
  UCD158897  Montia James A. Neilson Jr. 1975-4-28 3140 a Lake Mayacmas Mountains, northwest end of Francisco Property. High Valley Creek. (Elevation estimated using Google Earth by label maker.) 853 Comment
  UCD160473  Nassella lepida James A. Neilson Jr. 1975-5-23 3330 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD161373  Nassella lepida James A. Neilson Jr. 1976-6-18 s.n. Sonoma Mayacmas Mountains. Ridge between Squaw Creek and Big Sulphur Creek, (Elevation and exact location estimated by label maker.) 731 Comment
  UCD161775  Navarretia James A. Neilson Jr. 1975-5-23 3319 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Exact location unknown. Coordinates estimated by label maker.) Comment
  JEPS97612  Navarretia divaricata subsp. vividior R. D. Stone and G. L. Clifton 1983-6-15 544 Lake Upper High Valley Creek drainage ca. 1.5 mi NW of Geyser Rock 960 Comment
  JEPS97547  Navarretia intertexta R. D. Stone 1983-6-18 568 Lake Upper High Valley Creek drainage, ca. 1.1 mi SW of Glenbrook 792 Comment
  UCD158792  Navarretia linearifolia subsp. pinnatisecta James A. Neilson Jr. 1974-6-1 3565 Lake Mayacmas Mountains, Geyser Rock area, west of Whispering Pines, Lake County. (Elevation estimated by label maker using Google Earth.) 1097 Comment
  JEPS101636  Navarretia mellita Dean W. Taylor 1998-6-22 16681 Sonoma Geysers area, ca. 0.3 miles east along ridge from Eagle Rock Substation (ridge dividing Bear Canyon from Squaw Cr.) 792 Comment
  JEPS104972  Navarretia mellita Dean W. Taylor 1998-6-22 16681 Sonoma Geysers area, ca. 0.3 miles east along ridge from Eagle Rock Substation (ridge dividing Bear Canyon from Squaw Cr.) 792 Comment
  UCD161456  Navarretia mellita James A. Neilson Jr.; Teresa A. Sholars 1975-6-27 3294 c Sonoma Mayacmas Mountains, Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 1005 Comment
  UCD160847  Navarretia vividior James A. Neilson Jr.; Teresa A. Sholars 1975-6-27 3294 b Sonoma Mayacmas Mountains, Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 716 Comment
  UCD160863  Navarretia vividior James A. Neilson Jr.; Teresa A. Sholars 1975-6-27 3294 a Sonoma Mayacmas Mountains, Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD160450  Nemophila heterophylla James A. Neilson Jr. 1975-5-14 3454 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD158890  Nemophila menziesii James A. Neilson Jr. 1975-4-15 3121 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Elevation estimated using Google Earth by label maker.) 853 Comment
  UCD160137  Nemophila menziesii James A. Neilson Jr. 1974-3-27 3009 Sonoma Mayacmas Mountains. The Geysers. Site A-8. (Elevation estimated using Google Earth by label maker.) 426 Comment
  UCD160445  Nemophila menziesii James A. Neilson Jr. 1975-5-22 3179 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD158879  Nemophila menziesii var. atomaria James A. Neilson Jr. 1975-3-27 s.n. Sonoma Mayacmas Mountains. The Geysers. Site A-8. (Elevation estimated using Google Earth by label maker.) 426 Comment
  UCD158898  Nemophila pedunculata James A. Neilson Jr. 1975-4-28 3140 Lake Mayacmas Mountains, northwest end of Francisco Property. High Valley Creek. (Elevation estimated using Google Earth by label maker.) 853 Comment
  UCR42346  Onychium densum L. F. LaPre 1985-6-5 s.n. Sonoma Socrates Mine, c. 9 mi. ENE of Geyserville 976 Comment
  UC1731298  Orobanche bulbosa Dean W. Taylor 1998-6-22 16680 Sonoma 0.3 mi e along ridge from Eagle Rock Substation (ridge dividing Bear Canyon from Squaw Creek, Mayacamas Mountains); North Coast Ranges Region, Mayacamas Mountains 792 Comment
  UCD158787  Orobanche fasciculata James A. Neilson Jr. 1974-6-1 2759 Sonoma Mayacmas Mountains, Geyser Rock, west of Whispering Pines, northeastern Sonoma County. (Elevation estimated by label maker using Google Earth.) 1118 Comment
  UCD160620  Osmorhiza berteroi James A. Neilson Jr. 1975-5-23 3307 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UC176759  Packera eurycephala var. eurycephala W. J. V. Osterhout 1909-1-1 Sonoma Geysers Comment
  UC35989  Packera eurycephala var. eurycephala H. N. Bolander 1864-1 3963 Sonoma at the Geysers Geysers Comment
  SEINET11744645 Image available Packera greenei H. K. Sharsmith 1952-6-18 4127 Sonoma Near junction of Socrates Mine road with Pine Flat-Middletown road, Mayacamas Mountains.; 38.7619444 -122.7583333 975 Comment
  UCD160399  Packera greenei James A. Neilson Jr. 1975-5-14 3574 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160871  Packera greenei James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3422 Sonoma Mayacmas Mountains, adjacent to Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD160904  Packera greenei James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3433 Sonoma Section 10, The Geysers, above Geysers Road. (Exact location unknown. Elevation and coordinates estimated by label maker.) 388 Comment
  OBI30446  Panicum acuminatum John & Lucille Roos, Lucille Roos 1956-9-1 6598 Sonoma The Geysers Comment
  CHSC79422  Panicum acuminatum var. acuminatum Beecher Crampton 1969-7-14 8493 b Sonoma The Geysers, 12 miles (direct line) east of Colverdale. 493 Comment
  CHSC83174  Panicum acuminatum var. acuminatum Beecher Crampton 1964-8-18 7139 f Sonoma The Geysers, 12 miles (in direct line) east of Cloverdale, ca. 1/2 mile east of Geyser Resort area, slope of steam well (locally called 'The Outlaw') or otherwise thermal no. 10 (Thermal Power co.). Banks along road to steam well. 493 Comment
  POM188279  Panicum acuminatum var. acuminatum Marcus E. Jones 1931-7-5 29210 Sonoma The Geysers. Comment
  UC1023571  Panicum acuminatum var. acuminatum Milo S. Baker Apr 1936 252 Sonoma Sonoma Co. Geysers Comment
  UC1102744  Panicum acuminatum var. acuminatum A. R. Kruckeberg 1949-6-4 S- 21 Sonoma Sulphur Creek , Sulphur Creek (Big Geysers) Comment
  UC1146583  Panicum acuminatum var. acuminatum Freed W. Hoffman 1943-6-13 2040 Sonoma around hot springs, The Geysers (The Geysers); North Coast Ranges, The Geysers Comment
  UC1254541  Panicum acuminatum var. acuminatum R. Spellenberg 1966-9-7 1618 Sonoma downstream from the geyser area (along Sulphur Creek); The Geysers, along Sulphur Creek Comment
  UC1532604  Panicum acuminatum var. acuminatum R. Spellenberg 1966-9-7 1618 Sonoma The Geysers along Sulphur Creek downstream from the The Geyser area; The Geysers, along Sulphur Creek Comment
  UC204227  Panicum acuminatum var. acuminatum Volney Rattan 1877-6-26 Sonoma Geysers Comment
  UC479421  Panicum acuminatum var. acuminatum Marcus E. Jones, A. M. 1931-7-5 29210 Sonoma The Geysers Comment
  UC971699  Panicum acuminatum var. acuminatum Leo Koch 1940-4-22 825 Sonoma bare slopes around Sulphur Creek Geysers (e of Cloverdale); Inner North Coast Ranges, Sulfur Creek Geysers Comment
  UCD161862  Panicum acuminatum var. fasciculatum James A. Neilson Jr. 1978-7-15 3970 Sonoma Mayacmas Mountains. Socrates Mine Headquarters. (Exact location unknown, coordinates estimated by label maker.) Comment
  UCD167112  Panicum acuminatum var. fasciculatum James Neilson 1975-7-8 3404 Sonoma Mayacmas Mountains. Socrates Mine. (Exact location unknown, coordinates estimated by label maker.) Comment
  UCD160610  Panicum acuminatum var. thermale James A. Neilson Jr. 1975-6-5 3243 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD32823  Panicum acuminatum var. thermale Beecher Crampton 1964-8-18 7139 a Sonoma N.E. Sonoma County, The Geysers, 12 miles (in direct line) east of Cloverdale, ca. 1/2 mile east of Geyser Resort area, slope of steam well (locally called 'The Outlaw') or otherwise thermal no. 10 (Thermal Power co.). Comment
  UCD32824  Panicum acuminatum var. thermale Beecher Crampton 1964-8-18 7139 b Sonoma N.E. Sonoma County, The Geysers, 12 miles (in direct line) east of Cloverdale, ca. 1/2 mile east of Geyser Resort area, slope of steam well (locally called 'The Outlaw') or otherwise thermal no. 10 (Thermal Power co.). Comment
  UCD32825  Panicum acuminatum var. thermale Beecher Crampton 1964-8-18 7139 c Sonoma N.E. Sonoma County: The Geysers, 12 miles (in direct line) east of Cloverdale, ca. 1/2 mile east of Geyser Resort area, slope of steam well (locally called 'The Outlaw') or otherwise thermal no. 10 (Thermal Power co.). 493 Comment
  UCD32826  Panicum acuminatum var. thermale Beecher Crampton 1964-8-18 7139 d Sonoma North East part of county. The Geysers, 12 miles (in direct line) east of Cloverdale, ca. 1/2 mile east of Geyser Resort area, slope of steam well (locally called 'The Outlaw') or otherwise thermal no. 10 (Thermal Power co.). 493 Comment
  UCD32827  Panicum acuminatum var. thermale Beecher Crampton 1964-8-18 7139 e Sonoma N.E. Sonoma County: The Geysers, 12 miles (in direct line) east of Cloverdale, ca. 1/2 mile east of Geyser Resort area, slope of steam well (locally called 'The Outlaw') or otherwise thermal no. 10 (Thermal Power co.). South slope below steam well vent just below bubbling hat spring. 493 Comment
  UCD32828  Panicum acuminatum var. thermale Beecher Crampton 1964-8-18 7139 f Sonoma N.E. Sonoma County: The Geysers, 12 miles (in direct line) east of Cloverdale, ca. 1/2 mile east of Geyser Resort area, slope of steam well (locally called 'The Outlaw') or otherwise thermal no. 10 (Thermal Power co.), steep banks along road to steam well. 493 Comment
  UCD33493  Panicum acuminatum var. thermale Beecher Crampton 1969-7-14 8493 a Sonoma The Geysers, 12 miles (direct line) east of Colverdale. 493 Comment
  UCD33494  Panicum acuminatum var. thermale Beecher Crampton 1969-7-14 8493 b Sonoma The Geysers, 12 miles (direct line) east of Colverdale. 493 Comment
  UCD89123  Panicum acuminatum var. thermale Beecher Crampton 1964-8-18 7139 a. Sonoma Northeast Sonoma County: 'The Geysers'. Comment
  UCD89124  Panicum acuminatum var. thermale Beecher Crampton 1964-8-18 7139 b Sonoma North East part of county. The Geysers, Comment
  UCD89125  Panicum acuminatum var. thermale Beecher Crampton 1964-8-18 7139 c Sonoma North East part of county. The Geysers. Comment
  UCD89126  Panicum acuminatum var. thermale Beecher Crampton 1964-8-18 7139 d Sonoma North East part of county. The Geysers, Comment
  UCD89127  Panicum acuminatum var. thermale Beecher Crampton 1964-8-18 7139 e Sonoma North East part of county. The Geysers, Comment
  UCD89128  Panicum acuminatum var. thermale Beecher Crampton 1964-8-18 7139 f Sonoma North East part of county. The Geysers, Comment
  UCD89129  Panicum acuminatum var. thermale Beecher Crampton 1964-8-18 7149 Sonoma North East part of county. 'The Geysers', Big Sulphur Creek. Comment
  UCD89130  Panicum acuminatum var. thermale Beecher Crampton 1969-7-14 8493 b Sonoma The Geysers. Comment
  UCD89131  Panicum acuminatum var. thermale Beecher Crampton 1969-7-14 8493 Sonoma The Geysers. Comment
  UCD89132  Panicum acuminatum var. thermale Beecher Crampton 1969-7-14 8493 a Sonoma The Geysers, Comment
  SBBG115658  Panicum thermale B. Crampton 1964-8-18 7139 c Sonoma The Geysers, above Geyser Crk, ca. 12 mi (in direct line) E of Cloverdale, ca. 0.5 mi E of Geyser Resort area, slope of steam thermal no 10 (Thermal Power Co.) 493 Comment
  SBBG115659  Panicum thermale B. Crampton 1964-8-18 7139 e Sonoma The Geysers, above Geyser Crk, ca. 12 mi (in direct line) E of Cloverdale, ca. 0.5 mi E of Geyser Resort area, slope of steam thermal no 10 (Thermal Power Co.) 493 Comment
  UCD167454  Parentucellia viscosa James Neilson 1982-4-27 4068 Lake Mayacmas Mountains. 2 miles up Geyser Rd. from Anderson Valley. Ottoboni Ridge. (Notes on specimen give the locality Ottobani Ridge, which may be more than 2 miles from Anderson Valley. Exact location unknown. Coordinates estimated by label maker.) Comment
  UC157913  Parietaria pensylvanica Milo S. Baker 1898-6-12 679 Sonoma Geyser Canyon Comment
  UCD167115  Parnassia palustris James Neilson 1978-8-15 3971 Lake Mayacmas Mountains. Socrates Mine Headquarters. (Exact location unknown, coordinates estimated by label maker.) Comment
  UC710454  Parvisedum leiocarpum John Thomas Howell 1943-5-11 18037 Lake 8.9 mi s of Kelseyville (the only known station) Comment
  UCD151134  Pedicularis densiflora James A. Neilson Jr. 1973-6-6 3442 Sonoma Mayacmas Mountains. The Geysers. Site III B. (Location of Site III B taken from Neilson 3566 which says it is near Geyser Rock.) 1097 Comment
  UCD151085  Pellaea mucronata James A. Neilson Jr. 1974-6-1 2769 Sonoma Mayacmas Mountains, 1/4 mi. south of Geyser Rock area, ca. 3 1/2 mi. west of Whispering Pines, east Sonoma County. (Elevation estimated by label maker using Google Earth.) 1027 Comment
  UCD158871  Pellaea mucronata James A. Neilson Jr.; Teresa A. Sholars 1974-12-29 2913 Sonoma Mayacmas Mountains; unnamed creek east of Truit Creek, ca 2 miles west of The Geysers. (Elevation estimated by label maker using Google Earth.) 457 Comment
  UCD151229  Penstemon heterophyllus James A. Neilson Jr. 1974-5-17 2847 Sonoma On the border of Lake and Sonoma Counties: Mayacmas Mountains, Geyser Rock area, west of Whispering Pines and State Highway 175. (Elevation estimated using Google Earth by label maker.) 1115 Comment
  UCD160699  Penstemon heterophyllus James A. Neilson Jr. 1975-6-5 3292 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160868  Penstemon heterophyllus James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3292 Sonoma Mayacmas Mountains, Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UC27456  Penstemon heterophyllus var. heterophyllus H. N. Bolander 1864-1 3957 Sonoma at the Geysers Comment
  UC479151  Perideridia kelloggii Marcus E. Jones, A. M. 1931-7-5 29049 Sonoma The Geysers Comment
  UCD160618  Perideridia kelloggii James A. Neilson Jr. 1975-6-5 3473 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UC1312895  Perideridia oregana Lincoln Constance, Tsan-Iang Chuan, and Charles F. Quibell 1967-7-9 3790 Sonoma 1.5 mi nw The Geysers (above creek); Big Sulphur Creek 441 Comment
  UCR49827  Perideridia oregana L. F. LaPre 1987-7-30 s.n. Sonoma Socrates Mine, c. 9 mi. ENE of Geyserville 976 Comment
  UC1047018  Phacelia corymbosa L. R. Heckard and C. R. Bell 1951-6-12 154 Sonoma ridge above Pine Flat (reached by road from Alexander Valley to Middletown) Comment
  UCD158781  Phacelia corymbosa James A. Neilson Jr. 1974-6-1 2778 Sonoma Mayacmas Mountains, Geyser Rock, Sonoma County. (Elevation estimated by label maker using Google Earth.) 1118 Comment
  UCD158769  Phacelia heterophylla subsp. virgata James A. Neilson Jr. 1974-7-10 2830 Sonoma Mayacmas Mountains,west of Cobb Mtn., road to PG and E geothermal units 9 and 10. (Elevation estimated using Google Earth by label maker.) 975 Comment
  UCD158786  Phacelia heterophylla subsp. virgata James A. Neilson Jr. 1974-6-1 2771 Sonoma Mayacmas Mountains, Geyser Rock, west of Whispering Pines, northeastern Sonoma County. (Elevation estimated by label maker using Google Earth.) 1118 Comment
  UC901846  Phacelia imbricata L. Constance, L. R. Heckard, and A. R. Kruckeberg 1950-5-12 3328 Sonoma Alexander Valley-Pine Flat rd 3 mi w Contact Mine Comment
  UCD160115  Phacelia imbricata James A. Neilson Jr. 1973-6-3 3117 Sonoma Mayacmas Mountains. The Geysers. Site I. (Location and elevation of Site I estimated from Neilson 2994 which has Township/Range data and says that Site I is in Geyser Canyon. Coordinates estimated by label maker.) 853 Comment
  UCD160135  Phacelia imbricata James A. Neilson Jr. 1973-6-7 2972 Sonoma Mayacmas Mountains. The Geysers. Big Geysers. Site IV-G. (Elevation and exact location estimated by label maker.) 365 Comment
  UC933819  Phalaris angusta Leo Koch 1940-4-22 827 Sonoma at Geysers in Sulfur Creek Canyon; , Geysers Comment
  UCD168036  Phoradendron leucarpum subsp. tomentosum James A. Neilson Jr. 1981-3-13 3988 Sonoma Mayacmas Mountains, Caldwell Ranch, 1 mi. west Caldwell Pines. Squaw Creek drainage. Hills 1/4 mi. west old Caldwell Ranch. (Exact location unknown, coordinates estimated by label maker.) Comment
  HSC15049  Pickeringia montana R. Spellenberg 1964-6-15 405 Sonoma 5 mi. W of The Geysers on road from Geyserville Comment
  UCD158851  Pickeringia montana James A. Neilson Jr.; Teresa A. Sholars 1974-12-29 2924 Sonoma The Geysers, Section 15. (Elevation estimated by label maker using Google Earth.) 723 Comment
  UCD158852  Pickeringia montana James A. Neilson Jr.; Teresa A. Sholars 1974-12-29 2923 Sonoma The Geysers, Section 15. (Elevation estimated by label maker using Google Earth.) 723 Comment
  CAS-BOT-BC202278  Pickeringia montana var. montana W. W. Carruth 1899-7-1 s.n. Sonoma Geysers Comment
  CAS-BOT-BC202279  Pickeringia montana var. montana James McMurphy 1909-5-29 s.n. Sonoma Grade, ridge south of the Geysers Comment
  CAS-BOT-BC202285  Pickeringia montana var. montana Walter Knight; Irja Knight 1963-12-27 475 Sonoma Summit, Pine Flat Rd. Comment
  UC1193174  Pinus attenuata R. H. Neuns 1950-5-23 120 Lake on Cobb Mountain 2 mi w of Cobb (Sonoma-Lake County line); Quadrangle 60B4, Cobb Mountain 1264 Comment
  UCD158878  Pinus ponderosa James A. Neilson Jr.; Teresa A. Sholars 1974-12-28 2900 Sonoma Mayacmas Mountains; northeast corner of Section 15, southwest of The Geysers. (Elevation estimated by label maker using Google Earth.) 609 Comment
  UCD160140  Plagiobothrys nothofulvus James A. Neilson Jr. 1974-3-27 3015 Sonoma Mayacmas Mountains. The Geysers. Site A-8. (Elevation estimated using Google Earth by label maker.) 426 Comment
  JEPS129157  Plagiobothrys stipitatus var. micranthus Jake Ruygt 2015-5-2 6086 Napa West of Buck Mountain near Nevada. Knoxville 7.5' Quad. Comment
  UCD160441  Plagiobothrys tenellus James A. Neilson Jr. 1975-5-14 3469 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD167333  Plantago erecta James Neilson 1974-4-17 s.n. Sonoma Mayacmas Mountains. Big Geysers. (Exact location unknown. Coordinates estimated by label maker.) Comment
  UCD160860  Plantago lanceolata James A. Neilson Jr.; Teresa A. Sholars 1975-6-27 3289 Sonoma Mayacmas Mountains, Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD158887  Platystemon californicus James A. Neilson Jr. 1975-4-28 3143 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Elevation estimated using Google Earth by label maker.) 853 Comment
  UCD158926  Plectritis ciliosa James A. Neilson Jr. 1975-4-28 3141 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Elevation estimated using Google Earth by label maker.) 853 Comment
  UCD160605  Poa howellii James A. Neilson Jr. 1975-5-23 3187 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD160606  Poa howellii James A. Neilson Jr. 1975-5-23 3190 a Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD160974  Poa howellii James A. Neilson Jr. 1975-7-8 3409 Sonoma Mayacmas Mountains. Socrates Mine. (Elevation and coordinates estimated by label maker.) 914 Comment
  UCD160692  Poa pratensis subsp. pratensis James A. Neilson Jr. 1975-6-5 3228 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160694  Poa pratensis subsp. pratensis James A. Neilson Jr. 1975-5-23 3324 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UC1011005  Poa secunda subsp. secunda Virginia Bufford 1936-5-21 358 Sonoma 2 mi from Geysers (Cloverdale Rd) Comment
  UCD160318  Poa secunda subsp. secunda James A. Neilson Jr. 1975-5-14 3580 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD167141  Pogogyne serpylloides Jake Ruygt 2015-5-2 6086 i Napa West of Buck Mountain near Nevada. 598 Comment
  UCD160861  Polygala californica James A. Neilson Jr.; Teresa A. Sholars 1975-6-27 3302 Sonoma Mayacmas Mountains, Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD160122  Polygala cornuta James A. Neilson Jr. 1973-6-3 2993 Sonoma Mayacmas Mountains. The Geysers. Site I. (Location and elevation of Site I estimated from Neilson 2994 which has Township/Range data and says that Site I is in Geyser Canyon. Coordinates estimated by label maker.) 853 Comment
  CAS-BOT-BC419839  Polygonum parryi John Thomas Howell 1943-5-11 18041 Lake 8.9 miles south of Kelseyville Comment
  CAS-BOT-BC419901  Polygonum polygaloides subsp. kelloggii John Thomas Howell 1943-5-11 18034 Lake 8.9 miles south of Kelseyville Comment
  UCD158838  Polypodium californicum James A. Neilson Jr.; Teresa A. Sholars 1974-12-29 2915 Sonoma The Geysers, Section 15. (Elevation estimated by label maker using Google Earth.) 723 Comment
  CAS-BOT-BC233198  Polypogon interruptus Walter Knight; Irja Knight 1968-1-1 2269 Sonoma Geysers Resort, along geyser trail Comment
  CAS-BOT-BC237401  Polypogon monspeliensis Walter Knight; Irja Knight 1968-1-1 2270 Sonoma Geysers Resort, along geyser trail up ravine Comment
  UCD161843  Polypogon monspeliensis James A. Neilson Jr. 1975-6-26 s.n. Sonoma Mayacmas Mountains, Caldwell Pines area, Wildhorse #1. (Exact location unknown, coordinates estimated by label maker. Georeferenced near Wildhorse Cr.) Comment
  UCD91308  Polypogon monspeliensis Beecher Crampton 1964-8-18 7141 Sonoma Northeast Sonoma County: 'The Geysers'. Geyser Creek. Comment
  CAS-BOT-BC72171  Polystichum californicum Marcus E. Jones 1931-7-5 29162 Sonoma The Geysers Comment
  CAS-BOT-BC72172  Polystichum californicum Marcus E. Jones 1931-7-5 29162 Sonoma The Geysers Comment
  POM188272  Polystichum californicum Marcus E. Jones 1931-7-5 29162 Mendocino The Geysers. Comment
  UC479338  Polystichum californicum Marcus E. Jones, A. M. 1931-7-5 29162 Sonoma The Geysers Comment
  UCD151138  Polystichum californicum James A. Neilson Jr. 1973-6-6 2966 Sonoma Mayacmas Mountains. The Geysers. Intermittent stream west of Geyser Canyon. (Elevation estimated using Google Earth by label maker.) 441 Comment
  UCD168041  Polystichum californicum James A. Neilson Jr. 1981-3-13 3995 Sonoma Mayacmas Mountains, tributary of Hummingbird Creek. 1/2 mile NE of confluence of Hummingbird Creek and Squaw Creek. (Exact location unknown, coordinates estimated by label maker.) Comment
  UCD158904  Polystichum munitum James A. Neilson Jr. 1975-4-28 3147 Lake Mayacmas Mountains, Esperance Property near springs above cabin on High Valley Creek. (Elevation estimated using topo map by label maker.) 792 Comment
  UCD167969  Polystichum munitum James A. Neilson Jr. 1981-3-13 3989 Sonoma Mayacamas Mountains, Wildhorse Ck. Northeast Sonoma County. (Exact location unknown, coordinates estimated by label maker.) Comment
  CAS-BOT-BC488337  Prunella vulgaris var. lanceolata James A. Neilson, Jr. 1974-7-10 2813 Sonoma Mayacmas Mountains, 1/4 mi S of Geyser Rock, W of Whispering Pines, NE Sonoma Co. 1082 Comment
  UCD151204  Prunella vulgaris var. lanceolata James A. Neilson Jr. 1974-7-10 2813 Sonoma Mayacmas Mountains, 1/4 mile south of Geyser Rock, west of Whispering Pines, northeast Sonoma County. (Elevation estimated using Google Earth by label maker.) 1082 Comment
  UCD160621  Prunus virginiana var. demissa James A. Neilson Jr. 1975-5-23 3281 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD160855  Pseudognaphalium californicum James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3282 Sonoma Mayacmas Mountains, south of Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD160872  Pteridium aquilinum var. pubescens James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3266 Sonoma Mayacmas Mountains, Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  CAS-BOT-BC36523  Quercus James McMurphy 1909-5-29 s.n. Sonoma Grade, ridge south of the Geysers Comment
  UC1193267  Quercus berberidifolia R. H. Neuns 1950-5-3 101 Sonoma 6 mi e Geyserville 426 Comment
  UCD151139  Quercus berberidifolia James A. Neilson Jr. 1973-6-6 2959 Sonoma Mayacmas Mountains. The Geysers. Site IV. (Exact location of Site IV unknown. Elevation and coordinates very broadly estimated by label maker.) 441 Comment
  UCD158874  Quercus durata James A. Neilson Jr.; Teresa A. Sholars 1974-12-29 2909 Sonoma Mayacmas Mountains; northwest corner of Section 15, The Geysers. (Elevation estimated by label maker using Google Earth.) 609 Comment
  POM188375  Quercus kelloggii Marcus E. Jones 1931-7-5 28847 Sonoma The Geysers. Comment
  UC478894  Quercus kelloggii Marcus E. Jones, A. M. 1931-7-5 28847 Sonoma The Geysers Comment
  UCD46639  Quercus kelloggii D. Sanchez-Mata 1996-4-16 s.n. Sonoma Mercuryville. Big Sulphur Creek. The Geysers. 430 Comment
  CDA31008  Quercus wislizeni var. frutescens D. G. Kelch, Troy McGregor 2010-8-22 10 .347 Sonoma Nr Peak of Geyser Peak Rd. 0 Comment
  UCD151167  Ranunculus occidentalis var. occidentalis James A. Neilson Jr. 1974-3-27 3012 Sonoma Mayacmas Mountains. The Geysers. Site A-8. (Elevation estimated using Google Earth by label maker.) 426 Comment
  UCD158817  Ranunculus occidentalis var. occidentalis James A. Neilson Jr. 1974-4-17 2890 Sonoma Mayacmas Mountains. Above Big Geyser Canyon. (Elevation estimated using topo map by label maker.) 914 Comment
  UCD160640  Ranunculus uncinatus James A. Neilson Jr. 1975-6-5 3233 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Elevation, location, and coordinates estimated by label maker.) 792 Comment
  RSA181374  Rhamnus californica James I. McMurphy 1909-5-29 s.n. Sonoma Grade, ridge S of the Geysers. Comment
  UCR42378  Rhamnus californica L. F. LaPre 1985-6-5 s.n. Sonoma Socrates Mine, c. 9 mi. ENE of Geyserville 976 Comment
  UC22146  Rhododendron occidentale W. H. Brewer 1861-11-9 859 Sonoma nw of Mount St. Helena Comment
  UCD151117  Ribes menziesii James A. Neilson Jr.; Teresa A. Sholars 1974-6-26 3272 Sonoma Mayacmas Mountains, ca. 3 miles west of Glenbrook, vicinity of Caldwell Pines. (Elevation estimated by label maker using Google Earth.) 716 Comment
  UCD151193  Ribes menziesii James A. Neilson Jr. 1974-7-10 s.n. Sonoma Mayacmas Mountains, west of Geyser Rock, along road to PG and E geothermal units 9 and 10, eastern Sonoma County. (Elevation estimated using Google Earth by label maker.) 1036 Comment
  CAS-BOT-BC198923  Ribes roezlii var. cruentum R. Bacigalupi 1948-3-6 2857 Sonoma Slopes of Mayacamas Range, on road from the Geysers to Geyserville. Comment
  CAS-BOT-BC198924  Ribes roezlii var. cruentum R. Bacigalupi 1948-3-6 2857 Sonoma Slopes of Mayacamas Range, on road from the Geysers to Geyserville. Comment
  UCD158905  Ribes roezlii var. cruentum James A. Neilson Jr. 1975-4-28 3145 Lake Mayacmas Mountains, Esperance Property, High Valley Creek. (Elevation estimated using topo map by label maker.) 792 Comment
  GH346034  Rosa gymnocarpa G. G. Cowing 1884-5-25 Unknown Geysers Comment
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Dec 18 2015
  UC1193206  Rosa gymnocarpa G. W. Tourtillott 1950-5-10 19 Sonoma 1 mi e Geysers Hotel; Quad. 60B4 609 Comment
  UCD151160  Rosa pisocarpa James A. Neilson Jr. 1973-6-6 3116 Sonoma Mayacmas Mountains. The Geysers. Wooded area near watercourse 1 mile west of Geyser Canyon. (Elevation estimated using Google Earth by label maker.) 609 Comment
  UCD160480  Rosa pisocarpa James A. Neilson Jr. 1975-5-23 3309 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160623  Rosa pisocarpa James A. Neilson Jr. 1975-6-5 3349 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  JEPS97590  Rosa spithamea R. D. Stone 1983-6-15 545 Lake ca. 1.5 mi NW of Geyser Rock; Upper High Valley Creek drainage 853 Comment
  UCD160865  Rosa spithamea James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3265 Sonoma Mayacmas Mountains, Caldwell Pines, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD158825  Rubus leucodermis James A. Neilson Jr. 1974-12-28 3432 Sonoma The Geysers, roadway near Harness Camp, northeast Sonoma County. (Elevation estimated by label maker using Google Earth.) 487 Comment
  UCD160015  Rubus leucodermis James A. Neilson Jr.; Teresa A. Sholars 1975-3-27 3291 Sonoma Mayacmas Mountains, Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD163945  Rubus parviflorus James A. Neilson Jr. 1984-6-8 s.n. Lake Mayacmas Mountains, one-half mile east of Geyser Rock, at Alder Creek.[Exact location unknown. Coordinates estimated by label maker.] Comment
  UCD160332  Rumex acetosella James A. Neilson Jr. 1975-5-14 3468 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD167342  Rumex conglomeratus James Neilson 1981-5-28 4033 Sonoma Mayacmas Mountains. Lookout point along road fill over culvert 1/2 mi. west Big Geysers. Geysers Healdsburg Rd. (Exact location unknown. Coordinates estimated by label maker.) Comment
  UCD158827  Rumex crispus James A. Neilson Jr.; Teresa A. Sholars 1974-12-28 2897 Sonoma old mine on the Geysers Road, west of The Geysers, Section 14. (Elevation estimated by label maker using Google Earth.) 548 Comment
  UCD160131  Rumex crispus James A. Neilson Jr. 1973-6-6 3061 Sonoma Mayacmas Mountains. The Geysers. Site IV A. (Exact location of Site IV A unknown. Elevation and coordinates estimated to be near Site IV G by label maker.) 731 Comment
  UCD151195  Salix James A. Neilson Jr. 1974-7-10 2975 Sonoma Mayacmas Mountains, road to PG and E geothermal units 9 and 10. (Elevation estimated using topo map by label maker.) 975 Comment
  UCD151172  Salix exigua var. hindsiana James A. Neilson Jr. 1974-3-3 3022 Sonoma Mayacmas Mountains. The Geysers. Site A-8. (Elevation estimated using Google Earth by label maker.) 426 Comment
  UCD160401  Salix lasiolepis James A. Neilson Jr. 1975-5-14 3470 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD158832  Salvia James A. Neilson Jr.; Teresa A. Sholars 1974-12-29 2922 Sonoma the Geysers, Section 14. (Elevation estimated by label maker using Google Earth.) 533 Comment
  UCD167457  Salvia columbariae James Neilson 1982-4-27 4071 Lake Mayacmas Mountains. Near Ottoboni Ridge. (Neilson's notes only give Section 3, SW 1/4, SW 1/4, SW 1/4, without township and range. We assume the township and range is T11N, R9W which includes the northwest portion of Ottoboni Ridge. Exact location unknown. Coordinates estimated by label maker.) Comment
  UCD167953  Salvia columbariae James Neilson 1984-5-30 4107 Mendocino Mayacmas Mountains. Cold Water Canyon Power Plant site. (Exact location unknown. Coordinates estimated by label maker. Location information obtained from Neilson 4104 which indicated that this specimen was located at Cold Water Canyon Power Plant, 1/2 mile south Caldwell Pines.) Comment
  UCD160126  Sambucus nigra subsp. caerulea James A. Neilson Jr. 1973-6-6 2958 Sonoma Mayacmas Mountains. The Geysers. Site III. [Location of Site III at The Geysers taken from Neilson 3115 which gave the Township/Range of the location. Elevation and coordinates estimated by label maker.] 731 Comment
  UCD151099  Sanicula crassicaulis James A. Neilson Jr. 1973-6-3 3003 Sonoma Mayacmas Mountains. The Geysers. Site I. (Location and elevation of Site I estimated from Neilson 2994 which has Township/Range data and says that Site I is in Geyser Canyon. Coordinates estimated by label maker.) 441 Comment
  UC901878  Sanicula graveolens L. Constance, L. R. Heckard and A. R. Kruckeberg 1950-5-13 3329 Sonoma 4 mi w of Lincoln Rock (ne of Sulphur Creek) 762 Comment
  CAS-BOT-BC283657  Schedonorus pratensis James Jokerst 1985-4-26 2275 Sonoma Near Caldwell Ranch Comment
  UC25783  Scutellaria antirrhinoides H. N. Bolander 1864-1 3947 Sonoma at the Geysers Geysers Comment
  UCD160462  Scutellaria antirrhinoides James A. Neilson Jr. 1975-5-23 3312 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD151191  Scutellaria californica James A. Neilson Jr. 1974-7-10 2846 Sonoma Mayacmas Mountains, west side of Cobb Mountain, along road to PG and E geothermal units 9 and 10 at the Geysers. (Elevation estimated using a topo map by label maker.) 960 Comment
  UCD160457  Scutellaria tuberosa James A. Neilson Jr. 1975-5-22 3178 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD168050  Scutellaria tuberosa James Neilson 1981-7-1 4044 a Sonoma Mayacmas Mountains, entrance to Unit 15. (Exact location unknown. Coordinates estimated by label maker. Unit 15 is PG and E Power Plant 15 (retired).) Comment
  CAS-BOT-BC109870  Sedella leiocarpa John Thomas Howell 1943-5-11 18037 Lake 8.9 miles south of Kelseyville. The only known station. Comment
  POM303654  Sedella leiocarpa J. T. Howell 1943-5-11 s.n. Lake 8.9 miles south of Kelseyville Comment
  RSA35318  Sedella leiocarpa J. T. Howell 1943-5-11 18037 Lake 8.9 miles south of Kelseyville Comment
  UCD151102  Sedum spathulifolium James A. Neilson Jr. 1973-6-3 2946 Sonoma Mayacmas Mountains. The Geysers. Site I. (Location and elevation of Site I estimated from Neilson 2994 which has Township/Range data and says that Site I is in Geyser Canyon. Coordinates estimated by label maker.) 853 Comment
  UCD151222  Sedum spathulifolium James A. Neilson Jr. 1974-5-17 2978 Sonoma Mayacmas Mountains, 1/4 mile south of Geyser Rock, west of Whispering Pines. (Elevation estimated using Google Earth by label maker.) 1082 Comment
  UCR43083  Sedum spathulifolium L. F. LaPre 1985-6-5 s.n. Sonoma North Coast Ranges, Geysers Overlook, just NW of Geysers Resort on Healdsburg- Geysers Road 483 Comment
  UCD168043  Selaginella wallacei James A. Neilson Jr. 1981-3-13 3995 a Sonoma Mayacmas Mountains, tributary of Hummingbird Creek. 1/2 mile NE of confluence of Hummingbird Creek and Squaw Creek. (Exact location unknown, coordinates estimated by label maker.) Comment
  UCD167455  Senecio James Neilson 1982-4-27 4069 Lake Mayacmas Mountains. Ottoboni Ridge. (Neilson's notes only give Section 3, SE 1/4, SW 1/4, SW 1/4, without township and range. We assume the township and range is T11N, R9W which includes the northwest portion of Ottoboni Ridge. Exact location unknown. Coordinates estimated by label maker.) Comment
  UCD151310  Senecio aronicoides James A. Neilson Jr. 1974-4-30 2726 Sonoma Mayacmas Mountains. Ridge between Squaw Creek and Big Sulphur Creek, (Elevation and coordinates estimated by label maker.) 731 Comment
  UCD167001  Senecio aronicoides James A. Neilson Jr. 1984-5-30 s.n. Lake On border of Lake and Sonoma Counties: Mayacmas Mountains, Caldwell Pines at summit. (Exact location unknown, coordinates and elevation estimated by label maker.) 1011 Comment
  UCR45083  Senecio greenei L. F. LaPre 1986-5-31 s.n. Sonoma Socrates Mine, c. 9 mi ENE of Geyserville 976 Comment
  UCD160443  Senecio vulgaris James A. Neilson Jr. 1975-5-22 3182 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160475  Sidalcea diploscypha James A. Neilson Jr. 1975-5-23 3326 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD167009  Silene Joyce Lacey; Robin Ondricek-Fallscheer 1981-6-27 s.n. Lake West of Glenbrook. Middle of the W 1/2 of the SE 1/4 of Sec. 31. (Exact location unknown, coordinates estimated by label maker.) 780 Comment
  UC465678  Silene californica Milo S. Baker 1898-6-11 674 Sonoma Geysers Comment
  UC972134  Silene californica Helen K. Sharsmith 1952-6-18 4131 Sonoma 0.8 mi w of junction of Pine-Flat-Middletown road with Socrates Mine Road (Mayacamas Range); Inner North Coast Ranges, Mayacamas Range 914 Comment
  UCD158812  Silene gallica James A. Neilson Jr. 1974-4-16 3169 Sonoma Mayacmas Mountains. Big Geysers. (Elevation estimated using topo map by label maker.) 548 Comment
  JEPS58570  Silene hookeri Mr. and Mrs. Hugo Hamann and Eddie Dearing 1969-5-15 1113 -A Lake Tributary of Kelsey Creek , Binkley Ranch, Cobb township (Binkley Ranch, Cobb township) Comment
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Dec 31 2011
  UCD160112  Silene laciniata subsp. californica James A. Neilson Jr. 1973-6-3 2955 Sonoma Mayacmas Mountains. The Geysers. Site I. (Location and elevation of Site I estimated from Neilson 2994 which has Township/Range data and says that Site I is in Geyser Canyon. Coordinates estimated by label maker.) 853 Comment
  UCD160832  Silene laciniata subsp. californica James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3361 Sonoma Section 10, on the Geysers Road west of The Geysers Resort. (Exact location unknown. Elevation and coordinates estimated by label maker.) 388 Comment
  CHSC34252  Silene verecunda J. Lacey; R. Ondricek-Fallscheer. 1981-6-26 5 Lake Turn w off Bottle Rock Rd just s of Glenbrook on to High Valley Rd and continue 2 mi. 817 Comment
  UCD160117  Sisyrinchium James A. Neilson Jr. 1973-6-3 3040 Sonoma Mayacmas Mountains. The Geysers. Site I. (Location and elevation of Site I estimated from Neilson 2994 which has Township/Range data and says that Site I is in Geyser Canyon. Coordinates estimated by label maker.) 853 Comment
  UCD160664  Solanum parishii James A. Neilson Jr. 1975-6-5 3438 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD167343  Sorghum halepense James Neilson 1981-5-28 4034 Sonoma Mayacmas Mountains.1/2 mi. west Big Geysers. (Location information obtained from Neilson 4033 indicates that the location is at lookout point along road fill over culvert 1/2 mi. west Big Geysers. Exact location unknown. Coordinates estimated by label maker.) Comment
  UCD158738  Spergula arvensis James A. Neilson Jr. 1974-6-1 1313 Sonoma Mayacmas Mountains. The Geysers. (Elevation estimated using Google Earth by label maker.) 441 Comment
  UCD160215  Spergula arvensis James A. Neilson Jr. 1974-5-1 3059 b Sonoma On the border of Lake and Sonoma Counties: Mayacmas Mountains, Geyser Rock area, west of Whispering Pines and State Highway 175. (Elevation estimated using Google Earth by label maker.) 1115 Comment
  UCD160293  Spergularia bocconi James A. Neilson Jr. 1974-5-24 2880 Sonoma Mayacmas Mountains, Geyser Rock, ca. 3 mi. west of Whispering Pines, Sonoma County. (Elevation and georeferencing estimated by label maker.) 1127 Comment
  UCD160119  Spergularia rubra James A. Neilson Jr. 1973-6-3 2995 Sonoma Mayacmas Mountains. The Geysers. Site I. (Location and elevation of Site I estimated from Neilson 2994 which has Township/Range data and says that Site I is in Geyser Canyon. Coordinates estimated by label maker.) 853 Comment
  UCD160979  Stachys albens James A. Neilson Jr. 1975-7-8 3403 Sonoma Mayacmas Mountains. Socrates Mine. (Elevation and coordinates estimated by label maker.) 914 Comment
  UCD151096  Stachys rigida James A. Neilson Jr. 1973-6-3 2974 Sonoma Mayacmas Mountains. The Geysers. Site I. In Geyser Canyon. (Location and elevation of Site I estimated from Neilson 2994 which has Township/Range data and says that Site I is in Geyser Canyon. Coordinates estimated by label maker.) 853 Comment
  UCD151140  Stachys rigida James A. Neilson Jr. 1973-6-6 3047 Sonoma Mayacmas Mountains. The Geysers. Site A. (Elevation estimated using Google Earth by label maker.) 441 Comment
  UCD160617  Stachys rigida James A. Neilson Jr. 1975-6-5 3333 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD160688  Stachys rigida James A. Neilson Jr. 1975-6-5 3342 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160823  Stachys rigida James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3371 Sonoma Section 10, the Geysers. (Exact location unknown. Elevation and coordinates estimated by label maker.) 388 Comment
  UCD160883  Stachys rigida var. quercetorum James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3279 Sonoma Mayacmas Mountains, adjacent to Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottlerock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD160892  Stachys rigida var. quercetorum James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3260 Sonoma Mayacmas Mountains, adjacent to Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottlerock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD151227  Stephanomeria virgata James A. Neilson Jr. 1974-5-1 3119 Sonoma On the border of Lake and Sonoma Counties: Mayacmas Mountains, Geyser Rock area, west of Whispering Pines and State Highway 175. (Elevation estimated using Google Earth by label maker.) 1115 Comment
  UCD161864  Streptanthus James A. Neilson Jr. 1979-6-26 3976 Sonoma Mayacmas Mountans. About 2 1/2 miles northwest of Socrates Mine, 1/4 mile south of highest knoll above the Geysers on ridge that divides Big and Little Sulphur Creeks. (Exact location unknown. Coordinates estimated by label maker.) Comment
  UCD167361  Streptanthus James A. Neilson Jr. 1979-6-26 3976 Sonoma Mayacmas Mountans. About 2 1/2 miles northwest of Socrates Mine, 1/4 mile south of highest knoll above the Geysers on ridge that divides Big and Little Sulphur Creeks. (Exact location unknown. Coordinates estimated by label maker.) Comment
  UCD151226  Streptanthus barbiger James A. Neilson Jr. 1974-5-24 2891 Lake Mayacmas Mountains, below Geyser Rock, west of Whispering Pines and State Highway 175. (Elevation estimated using Google Earth by label maker.) 1082 Comment
  GH19689  Streptanthus brachiatus F. W. Hoffman & A. R. Kruckeberg 1949-6-5 2905 Unknown Exposed serpentine ridge near Contact Mine, east of Pine Flat, on the Sonoma-Lake county line, 3000 feet Comment
  GH379983  Streptanthus brachiatus F. W. Hoffman 1949-7-6 2871 Unknown ridge near Contact Mine, east of Pine Flat on the Sonoma-Lake county line 914 Comment
  GH379984  Streptanthus brachiatus F. W. Hoffman 1950-6-29 3436 Unknown ridge near Contact Mine, east of Pine Flat on the Sonoma-Lake county line 914 Comment
  GH40577  Streptanthus brachiatus F. W. Hoffman & A. R. Kruckeberg 1949-6-5 2905 Unknown Exposed serpentine ridge near Contact Mine, east of Pine Flat, on the Sonoma-Lake county line, 3000 feet Comment
  UC1292730  Streptanthus brachiatus Freed W. Hoffman 1950-5-25 3358 Sonoma E of Pine Flat, near Contact Mine Comment
  UC1292731  Streptanthus brachiatus Freed W. Hoffman 1951-7-30 3831 Sonoma E of Pine Ridge, near Contact Mine Comment
  UC1492709  Streptanthus brachiatus Freed W. Hoffman 1950-6-22 3379 Sonoma summit of ridge about 0.5 mi s Mercuryville (on road to Big Geysers); North Coast Ranges Comment
  UCD161422  Streptanthus brachiatus James A. Neilson Jr. 1977-6-7 3903 Sonoma Mayacmas Mountains. Socrates Mine. (Exact location unknown. Coordinates estimated by label maker.) Comment
  UCD161423  Streptanthus brachiatus James A. Neilson Jr. 1977-6-7 3903 Sonoma Mayacmas Mountains. Socrates Mine. (Exact location unknown. Coordinates estimated by label maker.) Comment
  UCD72523  Streptanthus brachiatus Sharon Strauss 2007-6-28 s. n. Sonoma Audubon Mayacamas Mountains Wildlife Refuge, Pine Flat Road, 0.25 mile on left from parking area down unpaved road from gate. 853 Comment
  UCR67074  Streptanthus brachiatus subsp. brachiatus L. F. LaPre 1987-7-7 s.n. Sonoma Socrates Mine area, c. 9 mi. ENE of Geyserville. Serpentine barren c. 2 mi. west of Socrates Mine, at the 'Ivana Roland' transmission line tower 0.5 mi. south of Cadd Fire Trail. 854 Comment
  UCR67075  Streptanthus brachiatus subsp. brachiatus L. F. LaPre 1986-5-31 s.n. Sonoma Socrates Mine area, serpentine barren c. 1.2 mi. north of Socrates Mine along ridge road (Cadd Fire Trail). 938 Comment
  UCR67076  Streptanthus brachiatus subsp. brachiatus L. F. LaPre 1985-6-25 s.n. Sonoma Coast Ranges, Socrates Mine, c. 9 mi. ENE of Geyserville 917 Comment
  UCR67077  Streptanthus brachiatus subsp. brachiatus L. F. LaPre 1986-7-29 s.n. Sonoma Socrates Mine, c. 9 mi ENE of Geyserville 976 Comment
  GH422095  Streptanthus glandulosus F. W. Hoffman 1949-6-5 2902 Unknown along the top of ridge of Pine Flat and near Contact Mine 960 Comment
  GH422101  Streptanthus glandulosus 1884-5-25 Unknown Geysers Comment
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Dec 18 2015
  UCD151165  Streptanthus glandulosus James A. Neilson Jr. 1974-3-27 3018 Sonoma Mayacmas Mountains. Big Geysers. (Elevation estimated using Google Earth by label maker.) 548 Comment
  UCD167952  Streptanthus glandulosus James Neilson 1984-5-30 4105 Mendocino Mayacmas Mountains. Cold Water Canyon Power Plant site. (Exact location unknown. Coordinates estimated by label maker. Location information obtained from Neilson 4104 which indicated that Cold Water Canyon Power Plant is 1/2 mile south of Caldwell Pines.) Comment
  CAS-BOT-BC87229  Streptanthus glandulosus subsp. glandulosus H. N. Bolander 1864-4-1 3944 Sonoma At the Geysers. Comment
  CAS-BOT-BC87235  Streptanthus glandulosus subsp. glandulosus H. N. Bolander 1864-4-1 3944 Sonoma At the Geysers. Comment
  UC10885  Streptanthus glandulosus subsp. glandulosus H. N. Bolander April 1864 3944 Sonoma at the Geysers Comment
  UC72933  Streptanthus glandulosus subsp. glandulosus Milo S. Baker 1898-6-12 646 Sonoma Geyer Road Geyser Canyon Comment
  UC956574  Streptanthus glandulosus subsp. glandulosus Freed W. Hoffman 1949-6-5 2902 Sonoma along ridge top above Pine Flat (near Contact Mine); North Coast Ranges 960 Comment
  UC1492782  Streptanthus glandulosus subsp. hoffmanii Freed W. Hoffman 1947-4-10 1056 Sonoma near hot springs; North Coast Ranges, Big Geysers Comment
  UCD161866  Streptanthus morrisonii James A. Neilson Jr. 1980-6-16 3983 Sonoma On unnamed tributary of Little Sulphur Creek above Healdsburg-Geysers Road. (Exact location unknown. Coordinates estimated by label maker.) Comment
  UCD167021  Streptanthus morrisonii James Neilson 1981-7-1 4046 Sonoma Mayacmas Mountains. Abril Ridge. (Abril Ridge assumed to be on Abril property which, based on other Neilson collections, includes T11N R9W Sect. 15. Exact location unknown, coordinates estimated by label maker.) Comment
  UCD167022  Streptanthus morrisonii James Neilson 1981-7-1 4046 Sonoma Mayacmas Mountains. Abril Ridge. (Abril Ridge assumed to be on Abril property which, based on other Neilson collections, includes T11N R9W Sect. 15. Exact location unknown, coordinates estimated by label maker.) Comment
  UCD167024  Streptanthus morrisonii James Neilson 1981-7-1 4046 Sonoma Mayacmas Mountains. Abril Ridge. (Abril Ridge assumed to be on Abril property which, based on other Neilson collections, includes T11N R9W Sect. 15. Exact location unknown, coordinates estimated by label maker.) Comment
  UCD167335  Streptanthus morrisonii James A. Neilson Jr. 1980-6-16 3983 Sonoma Mayacmas Mountains. On unnamed tributary of Little Sulphur Creek above Healdsburg-Geysers Road. (Exact location unknown. Coordinates estimated by label maker.) Comment
  UCD167337  Streptanthus morrisonii James A. Neilson Jr. 1980-6-16 3983 Sonoma Mayacmas Mountains. On unnamed tributary of Little Sulphur Creek above Healdsburg-Geysers Road. (Exact location unknown. Coordinates estimated by label maker.) Comment
  UC956605  Streptanthus tortuosus Freed W. Hoffman 1948-9-19 2374 Sonoma n-s ridge on Big Geysers rd from Healdsburg about 1 mi w The Geysers; North Coast Ranges Comment
  UCD151038  Tetrapteron graciliflorum James A. Neilson Jr. 1972-4-28 s.n. Lake Lake County. High Valley Creek. Northwest end of Francisco Property. (Elevation estimated from Google Earth by label maker.) 762 Comment
  UCD160624  Thalictrum fendleri var. polycarpum James A. Neilson Jr. 1975-6-5 3248 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD158928  Thysanocarpus curvipes James A. Neilson Jr. 1975-4-28 3141 a Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Elevation estimated using Google Earth by label maker.) 853 Comment
  UCD151188  Thysanocarpus laciniatus James A. Neilson Jr. 1974-4-17 2892 Sonoma Mayacmas Mountains. Big Geysers. (Elevation estimated using topo map by label maker.) 548 Comment
  UCD151088  Torilis arvensis James A. Neilson Jr. 1973-6-3 3002 Sonoma Mayacmas Mountains. The Geysers. Site I. (Location and elevation of Site I estimated from Neilson 2994 which has Township/Range data and says that Site I is in Geyser Canyon. Coordinates estimated by label maker.) 853 Comment
  UCD160826  Torilis arvensis James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3352 Sonoma Section 10, the Geysers. (Exact location unknown. Elevation and coordinates estimated by label maker.) 388 Comment
  UCD160853  Torilis arvensis James A. Neilson Jr.; Teresa A. Sholars 1975-6-27 3300 Sonoma Mayacmas Mountains, ca. 1/4 mile south of Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  CAS-BOT-BC81457  Torreya californica James McMurphy 1909-5-29 s.n. Sonoma Grade between Geyser Mountain and Black Mountain Comment
  UC1198261  Torreya californica Joseph P. Tracy 1935-7-7 14046 Sonoma near the Geysers 609 Comment
  HSC37861  Trichostema laxum Peter Sorensen 1976-7-30 Sonoma The Geysers, Big Sulphur Creek Comment
  UC157931  Trichostema laxum Milo S. Baker 1898-6-12 675 Sonoma Geyser Canyon Comment
  UC479126  Trichostema laxum Marcus E. Jones 1931-7-5 28816 Sonoma The Geysers Comment
  UC762795  Trichostema laxum R. F. Hoover 1942-7-6 5911 Sonoma ridge S of The Geysers Comment
  UCLA54886  Trichostema laxum Robert F. Hoover 1942-7-6 5911 Sonoma ridge S of The Geysers Comment
  UCLA54892  Trichostema laxum Marcus E. Jones 1931-7-5 Sonoma The Geysers Comment
  UCR50512  Trichostema laxum L. F. LaPre 1987-6-28 s.n. Sonoma North Coast Ranges, Cadd Fire Trail, off Unocal Ridge Road, 2 mi. west of Socrates Mine, near Lake county line 976 Comment
  UCD160393  Trifolium albopurpureum James A. Neilson Jr. 1975-5-14 3445 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160333  Trifolium bifidum James A. Neilson Jr. 1975-5-14 3458 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD151095  Trifolium bifidum var. decipiens James A. Neilson Jr. 1973-6-3 2989 Sonoma Mayacmas Mountains. The Geysers. Site I. In Geyser Canyon. (Location and elevation of Site I estimated from Neilson 2994 which has Township/Range data and says that Site I is in Geyser Canyon. Coordinates estimated by label maker.) 853 Comment
  UCD151176  Trifolium dichotomum James A. Neilson Jr. 1974-4-16 2843 Sonoma Mayacmas Mountains. The Geysers. Near sulphur bank number 13, geothermal wells 1 and 3. (Elevation estimated using Google Earth by label maker.) 487 Comment
  UCD160398  Trifolium dichotomum James A. Neilson Jr. 1975-5-14 3446 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD151187  Trifolium fucatum James A. Neilson Jr. 1974-4-17 2844 Sonoma Mayacmas Mountains. Big Geysers. (Elevation estimated using Google Earth by label maker.) 548 Comment
  UCD151178  Trifolium microdon James A. Neilson Jr. 1974-4-16 2843 Sonoma Mayacmas Mountains. The Geysers. Near sulphur bank number 13, geothermal wells 1 and 3. (Elevation estimated using Google Earth by label maker.) 487 Comment
  UCD160392  Trifolium microdon James A. Neilson Jr. 1975-5-14 3459 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  JEPS4162  Trifolium willdenovii Milo S. Baker 1898-6-12 645 Sonoma Geyser Canyon Comment
  UCD151245  Trillium chloropetalum James A. Neilson Jr. 1974-4-24 2729 Sonoma Mayacmas Mountains, upper Squaw Creek. (Elevation estimated using Google Earth by label maker.) 883 Comment
  UCD160328  Triphysaria pusilla James A. Neilson Jr. 1975-5-14 3462 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160394  Triphysaria versicolor subsp. faucibarbata James A. Neilson Jr. 1975-5-14 3463 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160607  Trisetum canescens James A. Neilson Jr. 1975-5-23 3286 b Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD160608  Trisetum canescens James A. Neilson Jr. 1975-6-5 3336 a Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD160646  Triteleia hyacinthina James A. Neilson Jr. 1975-6-5 3241 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Elevation, location, and coordinates estimated by label maker.) 792 Comment
  UCD160660  Triteleia laxa James A. Neilson Jr. 1975-6-5 3337 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD160809  Triteleia laxa James A. Neilson Jr. 1973-6-6 2988 Sonoma Mayacmas Mountains. The Geysers. Site III. [Location of Site III at The Geysers taken from Neilson 3115 which gave the Township/Range of the location. Elevation and coordinates estimated by label maker.] 731 Comment
  UCD158924  Tropidocarpum gracile James A. Neilson Jr. 1975-4-28 3154 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Elevation estimated using Google Earth by label maker.) 853 Comment
  UCD160656  Turritis glabra James A. Neilson Jr. 1975-6-5 3251 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD160657  Turritis glabra James A. Neilson Jr. 1975-6-5 3343 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  HSC14488  Umbellularia californica D. Sutherland, A. Sylvester, R. Spellenberg 1966-3-26 1336 Sonoma Near Big Geysers Comment
  RSA102075  Umbellularia californica John Reafield 1872-8-27 329 Sonoma Geyser Comment
  UCD67497  Umbellularia californica D. Sanchez-Mata 1996-4-16 s.n. Sonoma Mercuryville. Big Sulphur Creek. The Geysers. Quercus wislizenii and Quercus kelloggii woodland; northern slopes. 430 Comment
  UCD158805  Uropappus lindleyi James A. Neilson Jr. 1974-3-27 2940 Sonoma Mayacmas Mountains. Big Geysers. (Elevation estimated using topo map by label maker.) 548 Comment
  UCD160489  Uropappus lindleyi James A. Neilson Jr. 1975-5-23 3191 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD168061  Verbascum blattaria James Neilson 1977-6-7 3902 Sonoma Mayacmas Mountains. 1 mile so Socrates Mine on crest road. (Exact location unknown. Coordinates estimated by label maker.) Comment
  CDA31033  Verbena lasiostachys var. scabrida D. G. Kelch, Troy McGregor 2010-8-22 10 .35 Sonoma Nr Peak of Geyser Peak Rd. 0 Comment
  UCD151091  Vicia americana subsp. americana James A. Neilson Jr. 1973-6-3 2969 Sonoma Mayacmas Mountains. The Geysers. Site I. (Location and elevation of Site I estimated from Neilson 2994 which has Township/Range data and says that Site I is in Geyser Canyon. Coordinates estimated by label maker.) 853 Comment
  UCD160325  Vicia americana subsp. americana James A. Neilson Jr. 1975-5-14 3452 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160326  Vicia americana subsp. americana James A. Neilson Jr. 1975-5-14 3453 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160436  Vicia americana subsp. americana James A. Neilson Jr. 1975-5-14 3447 a Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160661  Vicia americana subsp. americana James A. Neilson Jr. 1975-6-5 3332 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD160322  Viola lobata James A. Neilson Jr. 1975-5-14 3451 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160440  Viola purpurea James A. Neilson Jr. 1975-5-14 3449 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160446  Viola purpurea James A. Neilson Jr. 1975-5-14 3950 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD158900  Viola purpurea subsp. quercetorum James A. Neilson Jr. 1975-4-15 3122 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Elevation estimated using Google Earth by label maker.) 853 Comment
  UCD158821  Vitis californica James A. Neilson Jr.; Teresa A. Sholars 1974-12-28 2898 Sonoma northwest corner of Section 14, The Geysers. (Elevation estimated by label maker using Google Earth.) 472 Comment
  UCD151221  Vulpia bromoides James A. Neilson Jr. 1974-5-17 2979 Sonoma Mayacmas Mountains, 1/4 mile south of Geyser Rock, west of Whispering Pines. (Elevation estimated using Google Earth by label maker.) 1082 Comment
  HSC9911  Vulpia microstachys Leo Koch 1940-4-22 838 Sonoma At Geysers in Sulfur Creek Canyon. Comment
  RSA101821  Vulpia microstachys H. N. Bolander 37 Sonoma Geysers. Comment
  GH341839  Vulpia microstachys var. ciliata H. N. Bolander 37 Unknown Geysers Comment
  UC933823  Vulpia microstachys var. ciliata Leo Koch 1940-4-22 824 a Sonoma Geyers; Sulphur Creek Canyon Comment
  UC971688  Vulpia microstachys var. ciliata Leo Koch 1940-4-22 835 Sonoma Geysers; Sulfur Creek Canyon Comment
  UCD151186  Vulpia microstachys var. ciliata James A. Neilson Jr. 1974-4-17 3486 Sonoma Mayacmas Mountains. Big Geysers. (Elevation estimated using Google Earth by label maker.) 548 Comment
  UCD93850  Vulpia microstachys var. ciliata L. Koch 1940-4-22 835 Sonoma Sulphur Creek Geysers. Comment
  UC933825  Vulpia microstachys var. confusa Leo Koch 1940-4-22 839 Sonoma Geysers; Sulphur Creek Canyon Comment
  UCD93947  Vulpia microstachys var. confusa L. Koch 1940-4-22 839 Sonoma Sulphur Creek Geysers. Comment
  UC729991  Vulpia microstachys var. pauciflora Leo F. Koch 1940-4-22 840 Sonoma Geysers; Sulphur Creek Canyon Comment
  UC971689  Vulpia microstachys var. pauciflora Leo Koch 1940-4-22 838 a Sonoma Geysers; Sulphur Creek Canyon Comment
  UCD151153  Vulpia myuros James A. Neilson Jr. 1973-6-7 2964 Sonoma Mayacmas Mountains. The Geysers. Big Geysers. Site IV-G. (Elevation and exact location estimated by label maker.) 441 Comment
  UCD160492  Vulpia myuros James A. Neilson Jr. 1975-5-23 3184 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Location, coordinates, and elevation estimated by label maker.) 792 Comment
  UCD151244  Woodwardia fimbriata James A. Neilson Jr. 1974-4-16 3026 Sonoma Mayacmas Mountains, upper reaches of Squaw Creek. (Elevation estimated using Google Earth by label maker.) 944 Comment
  UCD160876  Wyethia James A. Neilson Jr.; Teresa A. Sholars 1975-6-26 3261 Sonoma Mayacmas Mountains, Caldwell Pines, ca. 3 1/2 miles west of Glenbrook and Bottle Rock Road, northeast Sonoma County. (Elevation and coordinates estimated by label maker.) 975 Comment
  UCD151202  Wyethia angustifolia James A. Neilson Jr. 1974-7-10 2812 Sonoma Mayacmas Mountains, 1/4 mile south of Geyser Rock, west of Whispering Pines, northeast Sonoma County. (Elevation estimated using Google Earth by label maker.) 1082 Comment
  UCD160482  Wyethia angustifolia James A. Neilson Jr. 1975-5-23 3173 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160816  Wyethia angustifolia James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3353 Sonoma Section 10, along Geysers Road, The Geysers. (Exact location unknown. Elevation and coordinates estimated by label maker.) 388 Comment
  UCD160817  Wyethia angustifolia James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3364 Sonoma Section 10, along Geysers Road, The Geysers. (Exact location unknown. Elevation and coordinates estimated by label maker.) 388 Comment
  UCD160978  Wyethia angustifolia James A. Neilson Jr. 1975-7-8 3410 Sonoma Mayacmas Mountains. Socrates Mine. (Elevation and coordinates estimated by label maker.) 914 Comment
  UCD151197  Wyethia helenioides James A. Neilson Jr. 1974-8-19 2849 Sonoma Mayacmas Mountains, Geyser Rock area, ca. 3 1/2 miles west of Whispering Pines, east Sonoma County. (Elevation estimated using Google Earth by label maker.) 1115 Comment
  UCD160690  Wyethia helenioides James A. Neilson Jr. 1975-6-5 3250 Lake Mayacmas Mountains, Francisco Property. High Valley Creek. (Coordinates, location, and elevation estimated by label maker.) 792 Comment
  UCD160825  Zeltnera James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3370 Sonoma Section 10, the Geysers. (Exact location unknown. Elevation and coordinates estimated by label maker.) 388 Comment
  UCD160841  Zeltnera davyi James A. Neilson Jr.; Teresa A. Sholars 1975-6-20 3474 Sonoma Section 10, ca. 1.5 miles west of the Geysers Resort. (Exact location unknown. Elevation and coordinates estimated by label maker.) 396 Comment



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