41.06277 41.16277 -121.50000 -121.40000 UC/JEPS: Consortium Search Results
Search Results — 704 specimen records retrieved (704 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/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC93087  Achnatherum lemmonii R. Fischer 2005-7-19 599 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collection made in the open juniper woodland near camp 7 and north of Horr Pond. 1018 Comment
  CHSC93088  Achnatherum lemmonii R. Fischer 2005-5-20 478 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants growing in thin volcanic soil of an opening within the juniper woodlands along Fishhawk Trail, North of camp 7. 1021 Comment
  CHSC93089  Achnatherum lemmonii R. Fischer 2005-5-19 494 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants growing in open juniper woodland around camp 7, north of Horr Pond. 1013 Comment
  CHSC92977  Achyrachaena mollis R. Fischer 2005-5-23 473 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. On meadow north of McArthur along Rat Farm Road. Near the old McArthur Swamp lands. 1013 Comment
  CHSC88314  Acmispon americanus var. americanus R. Fischer; J. Marr 2004-5-24 197 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located on roadbed of Spatter Cone Trail. 1036 Comment
  CHSC89703  Acmispon americanus var. americanus R. Fischer; J. Marr 2004-8-15 379 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected on Lava Springs Trail between Horr Pond and Crystal Springs. 1010 Comment
  CDA20538  Aegilops cylindrica K. Martyn 2005-6-3 PDR 1292147 Shasta Cascade Range; McArthur swamp. 0 Comment
  CHSC112436  Aegilops cylindrica Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18787 Lassen On the east side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CHSC93209  Aegilops cylindrica R. Fischer 2005-7-18 600 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected from a road bed near Horr Pond and camp 7, also obs. on roadbed along the upper end of Big Lake. 1010 Comment
  JEPS120921  Aegilops cylindrica Lowell Ahart, John Dittes, Todd Sloat 2013-6-9 18787 Shasta On E side of the north-south road, on the W side of McArthur Diversion Canal, 2.1 air miles S of Rat Farm Boat Launch, 1.2 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  CHSC88338  Agastache parvifolia R. Fischer; J. Marr 2004-5-24 221 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. Near summit of Spatter Cone Trail. 1024 Comment
  CHSC88762  Agastache parvifolia R. Fischer 2004-7-7 277 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located off upper portion of Spatter Cone Trail. 1054 Comment
  CHSC88742  Agoseris glauca var. laciniata R. Fischer; J. Marr 2004-5-23 256 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Lava Spring Trail. Between Horr Pond and Big Lake. 1011 Comment
  CHSC88744  Agoseris heterophylla R. Fischer; J. Marr 2004-5-24 258 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located near lower half of Spattercone Trail. 1028 Comment
  CHSC92976  Agoseris heterophylla R. Fischer 2005-5-20 472 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. In roadbed of Juniper Trail, north of camp 7. 1036 Comment
  CHSC88738  Agoseris retrorsa R. Fischer; J. Marr 2004-5-24 252 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located n. of Camp 7. 1013 Comment
  CHSC93295  Agoseris retrorsa R. Fischer 2005-4-20 651 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected off Juniper Trail 300 yds north-east of camp 7 in YPF. 1028 Comment
  CHSC96269  Agoseris retrorsa R. Fischer 2006-5-14 943 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected ca. 0.25 miles north of Horr Pond (campsite 7) in an open junjper/YPF woodland adjacent to Juniper Trail. 1024 Comment
  CHSC93007  Agropyron desertorum R. Fischer 2005-7-17 522 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Along the west shore of Big Lake on the meadow. 1010 Comment
  CHSC93290  Agropyron desertorum R. Fischer 2005-5-22 539 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected at the north end of Big Lake from the dryer portion of the meadow. 1008 Comment
  CHSC93030  Agrostis stolonifera R. Fischer 2005-7-14 527 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collection made near camp 7 in a marshy part of meadow at edge of Horr Pond. 1008 Comment
  CHSC93332  Agrostis stolonifera R. Fischer 2005-7-19 590 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected at a meadow edge west of the Spatter Cone Trail junction with Lava Springs Trail. 1008 Comment
  CHSC93325  Aira caryophyllea R. Fischer 2005-5-21 630 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected near the junction of Fishhawk Trail and Juniper Trail from a small meadow. 1048 Comment
  CHSC96189  Alisma lanceolatum R. Fischer 2006-7-23 899 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the (Scirpus covered) shore line of a conic depression pond near the lower and western edge of Big Lake. 1008 Comment
  CHSC89768  Allophyllum divaricatum R. Fischer; J. Marr 2004-7-7 423 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off Spatter Cone Trail. 1036 Comment
  CHSC88344  Allophyllum gilioides subsp. violaceum R. Fischer; J. Marr 2004-5-24 227 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. Located along Spatter Cone Trail. 1054 Comment
  UCD55888  Alopecurus carolinianus Beecher Crampton 1960-6-16 5632 Shasta N.E. Shasta County: Fall River Valley, Eastman Lake Area, 2.5 miles north of Glenburn, Belmonte's Ranch. Comment
  CHSC89767  Alopecurus geniculatus R. Fischer; J. Marr 2004-5-22 420 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off road between McArthur and Rat Farm, E side. In vernal pool on mdw., part of the old McArthur Swamp. 1011 Comment
  CHSC93025  Alopecurus pratensis R. Fischer 2005-7-17 524 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. On the west shore of Big Lake. 1008 Comment
  CHSC89796  Alyssum minus subsp. micranthum R. Fischer; J. Marr 2004-5-25 436 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off Lava Springs Trail near camp 7 at edge of mdw. 1010 Comment
  CHSC88757  Amelanchier utahensis R. Fischer; J. Marr 2004-5-28 272 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Lava Springs Trail between Crystal Springs and Ya-She. 1013 Comment
  CHSC93316  Amsinckia menziesii R. Fischer 2005-4-17 571 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected near camp 9 just under woodland edge of the dryer meadow of Horr Pond. 1010 Comment
  UCD119736  Amsinckia menziesii Beecher Crampton 1960-6-16 5628 Shasta Shasta County, 2.5 miles north of Glenburn, Fall River Valley, Eastman Lake Area, Belmonte Ranch. 1066 Comment
  UCD37447  Amsinckia menziesii Beecher Crampton 1960-6-16 5628 Shasta Shasta County, 2.5 miles north of Glenburn, Fall River Valley, Eastman Lake Area, Belmonte Ranch. 1066 Comment
  CHSC89667  Anaphalis margaritacea R. Fischer; J. Marr 2004-9-27 344 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along northern shores Ya-She waterways. 1008 Comment
  CHSC88747  Ancistrocarphus filagineus R. Fischer; J. Marr 2004-5-24 262 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located on the upper roadbed of Spattercone Trail. 1054 Comment
  CHSC93009  Ancistrocarphus filagineus R. Fischer 2005-5-20 517 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected on roadbed at the junction of Fishhawk Trail and Spatter Cone Trail. 1048 Comment
  CHSC93027  Ancistrocarphus filagineus R. Fischer 2005-4-18 634 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected from the road bed of the main park road near the east end of Horr Pond. 1008 Comment
  CHSC89789  Antennaria argentea R. Fischer; J. Marr 2004-5-23 413 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Off Lava Springs Trail near camp 7. 1011 Comment
  CHSC92992  Antennaria argentea R. Fischer 2005-5-21 475 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. On the eastern rim of a conic depression pond located 600 ft. west of Big Lake. 1016 Comment
  CHSC96195  Antennaria argentea R. Fischer 2006-5-14 969 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected on a dry grassy slope just ne of a conic depression pond near the lower and western edge of Big Lake. 1008 Comment
  CHSC88733  Antennaria dimorpha R. Fischer; J. Marr 2004-5-25 247 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located 400' n. Camp 7. 1008 Comment
  CHSC88357  Anthemis arvensis R. Fischer; J. Marr 2004-5-22 241 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. SE of Ahjumawi LSSP, on access rd. to Rat Farm, n. of McArthur. Part of the old McArthur Swamp. 1008 Comment
  CHSC92975  Anthriscus caucalis R. Fischer 2005-5-19 480 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. At camp 8 just north of Horr Pond. 1011 Comment
  CHSC96184  Anthriscus caucalis R. Fischer 2006-5-10 903 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plant collected from campsite 8, white oak woodland, Horr Pond. 1010 Comment
  UCD56279  Apera interrupta Dan Marcum 1982-6-22 s.n. Shasta on Fall River Ranch. Comment
  CHSC88326  Apocynum androsaemifolium R. Fischer; J. Marr 2004-5-24 209 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Spatter Cone Trail. 1043 Comment
  UC54548  Apocynum androsaemifolium H. M. Hall and E. B. Babcock June, 1903 4222 Shasta n.e. Shasta Co. lava beds Sierra Nevada Mts., n.e. Shasta Co. lava beds 1219 Comment
  CDA36834  Apocynum cannabinum CDFA Staff 1999-6-1 s.n. Shasta Lava Creek Lodge, near Eastman Lake. 0 Comment
  CHSC89657  Apocynum cannabinum R. Fischer 2004-7-5 319 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off Lava Springs Trail near pond at Ya-She. 1010 Comment
  CHSC96262  Aquilegia formosa R. Fischer 2006-10-25 950 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected on the western edge of Ja-She Springs at a spring inlet. 1008 Comment
  CHSC89653  Aquilegia formosa var. formosa R. Fischer; J. Marr 2004-9-27 339 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along northern shores Ya-She pond. 1010 Comment
  CHSC89654  Aquilegia formosa var. formosa R. Fischer 2004-7-5 322 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off Lava Springs Trail W of Ya-She campsites. In the middle of a mdw. 1010 Comment
  CHSC93324  Arabidopsis thaliana R. Fischer 2005-5-22 561 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected near Ya-She Spring. 1008 Comment
  CAS-BOT-BC38976  Arctostaphylos malloryi Walter Knight; Irja Knight 1987-10-1 6077 Shasta Iron Mt., via Tilden Botanic Garden in Berkeley Comment
  CAS-BOT-BC38980  Arctostaphylos malloryi James I. Mallory; Albert Seneres; Steve Edwards 1981-2-20 s.n. Shasta Iron Mountain Comment
  CHSC89700  Artemisia arbuscula subsp. arbuscula R. Fischer; J. Marr 2004-8-16 383 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along rd. between McArthur and Rat Farm. Mdw on edge of the old McArthur Swamp. 1013 Comment
  CHSC89698  Artemisia douglasiana R. Fischer; J. Marr 2004-8-14 361 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located W shore, N end, of Big Lake. 1010 Comment
  CHSC89711  Artemisia tridentata subsp. tridentata R. Fischer; J. Marr 2004-8-15 386 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected above W shore of Big Lake off Juniper Trail. 1018 Comment
  CHSC88774  Asclepias fascicularis R. Fischer 2004-7-2 289 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located off Spatter Cone Trail. 1051 Comment
  CHSC88752  Astragalus filipes R. Fischer; J. Marr 2004-5-27 267 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located near Camp 7. 1013 Comment
  UC54369  Astragalus inversus H. M. Hall and E. B. Babcock June, 1903 4239 Shasta Lava Beds Sierra Nevada Mountains, Lava Beds (Sierra Nevada Mountains, north-eastern Shasta County) 1219 Comment
  CHSC96214  Astragalus lemmonii R. Fischer 2006-7-23 928 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected near south end of Big Lake, the western shore, 6 feet from water edge. The Astragalus was growing among the meadow grass in an opening in the Scirpus that borders the shoreline. 1007 Comment
  CHSC93313  Athysanus pusillus R. Fischer 2005-4-16 568 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected in woodlands off Fishhawk Trail. 1036 Comment
  CHSC89646  Atriplex triangularis R. Fischer; J. Marr 2004-9-25 346 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected on mdw near water edge of Horr Pond. Located below Camp 7. 1008 Comment
  CHSC96265  Atriplex triangularis R. Fischer 2006-10-23 947 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected on the north edge of a conic depression pond near the lower and western edge of Big Lake. 1008 Comment
  CHSC100543  Bacopa rotundifolia Dan Marcum 2005-8-13 Shasta Fall River Valley. 1005 Comment
  CHSC88332  Balsamorhiza sagittata R. Fischer; J. Marr 2004-5-24 215 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Spatter Cone Trail. 1051 Comment
  UCD56783  Beckmannia syzigachne Beecher Crampton 1960-6-16 5650 Shasta NE Shasta County. Fall River Valley. Eastman Lake area. 2.5 miles N of Glenburn 1066 Comment
  CHSC89635  Berberis aquifolium var. aquifolium R. Fischer 2004-7-4 335 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off Lava Spring Trail between Camp 7 and Crystal Springs near rock walled enclosure. Along road. 1010 Comment
  CHSC93024  Berula erecta R. Fischer 2005-7-15 604 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected from water edge of Ya-She Pond. 1008 Comment
  CHSC96169  Berula erecta R. Fischer 2006-7-22 882 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the moist meadow and water edge of Bowman ditch. The ditch drains a heavy flow of spring water near the western entrance of the park. South side of park road and west side of ditch. 1010 Comment
  CHSC93197  Blepharipappus scaber R. Fischer 2005-5-23 482 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. On meadow north of McArthur along Rat Farm Road. This mdw. area is near the old McArthur Swamp lands. 1013 Comment
  CHSC93205  Blepharipappus scaber R. Fischer 2005-5-21 554 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. In road bed, 400 yds west of Big Lake on Fishhawk Trail. 1036 Comment
  CHSC88306  Boechera retrofracta R. Fischer; J. Marr 2004-5-24 190 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Spatter Cone Trail. 1036 Comment
  CHSC89797  Boechera retrofracta R. Fischer; J. Marr 2004-5-26 430 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected N shore, E side, Big Lake. Near shoreline. 1008 Comment
  CHSC89798  Boechera retrofracta R. Fischer; J. Marr 2004-5-26 430 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected N shore, E side, Big Lake. Near shoreline. 1008 Comment
  CHSC93280  Boechera retrofracta R. Fischer 2005-4-17 637 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected from the ridge of a bare volcanic cinder field 400 yds north of the upper end of Big Lake. 1031 Comment
  CHSC96200  Brodiaea coronaria subsp. coronaria R. Fischer 2006-7-20 915 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plant collected off east side of Rat Farm Road ca. 1 mile north of McArthur. Plant growing in a drainage swell on a sagebrush/Artemisia transmontane meadow. 1011 Comment
  CHSC93048  Bromus carinatus var. carinatus R. Fischer 2005-5-22 491 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants growing along main park road between Crystal Springs and Ya-She 1008 Comment
  CHSC93049  Bromus carinatus var. carinatus R. Fischer 2005-7-20 468 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants growing along Juniper Trail in juniper/brush covered woodlands. 1036 Comment
  CHSC112471  Bromus hordeaceus Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18783 Lassen Along the fence on the west side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles south of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CHSC112683  Bromus hordeaceus Lowell Ahart; John Dittes 2013-6-9 18795 Shasta On the bank of a deep irrigation ditch, Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CHSC92973  Bromus hordeaceus R. Fischer 2005-5-19 490 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Around camp 7, north of Horr Pond. 1013 Comment
  JEPS120922  Bromus hordeaceus Lowell Ahart, John Dittes, Todd Sloat 2013-6-9 18783 Shasta Along the fence on the W side of the north-south road, on the W side of McArthur Diversion Canal, 2.1 air miles S of Rat Farm Boat Launch, 1.2 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  CHSC93096  Bromus inermis subsp. inermis R. Fischer 2005-7-17 592 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc plateau. Clumping grass collected along the west shore of Big Lake. 1008 Comment
  CHSC96283  Bromus japonicus R. Fischer 2006-7-21 927 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from dry grassy meadow and roadbed, disturbed soil, between Horr Pond and campsite 7. 1011 Comment
  CHSC96291  Bromus japonicus R. Fischer 2006-7-23 920 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along Fishhawk Trail north of Horr Pond. Plants growing on road-bed and adjacent small meadow. 1033 Comment
  CHSC93196  Bromus tectorum R. Fischer 2005-5-19 495 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Around camp 7, north of Horr Pond. 1013 Comment
  CHSC89778  Calocedrus decurrens R. Fischer; J. Marr 2004-5-28 435 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off Lava Springs Trail, between Crystal Springs and Ya-She. Along road. 1011 Comment
  CHSC88775  Calochortus macrocarpus R. Fischer 2004-7-2 290 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located around Camp 7. 1013 Comment
  CHSC88794  Calochortus macrocarpus R. Fischer 2004-7-2 299 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located near Camp 7. 1014 Comment
  CHSC88359  Calyptridium monospermum R. Fischer; J. Marr 2004-5-28 243 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Lava Springs Trail between Crystal Springs and Ja-She. 1010 Comment
  CDA33878  Calystegia occidentalis subsp. occidentalis Dale Woods 2010-7-1 Shasta North shore of Eastman Lake. Near Lava Creek Lodge. 0 Comment
  UCD37446  Camelina microcarpa Beecher Crampton 1960-6-16 5626 Shasta Shasta County, 2.5 miles north of Glenburn, Fall River Valley, Eastman Lake Area, Belmonte Ranch. 1066 Comment
  CHSC93056  Camissonia contorta R. Fischer 2005-4-17 516 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. 1010 Comment
  CHSC93057  Camissonia contorta R. Fischer 2005-7-20 471 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants growing in thin volcanic soil in an opening of juniper woodlands, 500 ft. north of camp 7. 1021 Comment
  CHSC93058  Camissonia contorta R. Fischer 2005-5-22 620 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected north of camp 7. 1016 Comment
  CHSC93278  Capsella bursa-pastoris R. Fischer 2005-4-18 633 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected in a grassy opening under yellow pine and Oregon White Oak at camp 8, north of Horr Pond. 1010 Comment
  CHSC97348  Carex angustata R. Fischer 2006-7-22 865 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. 1007 Comment
  CHSC112685  Carex athrostachya Lowell Ahart; John Dittes 2013-6-9 18789 Shasta On the banks of a deep irrigation ditch, Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS120919  Carex athrostachya Lowell Ahart, John Dittes 2013-6-9 18789 Shasta Hollenbeck Field, 950 feet E of Rat Farm Boat Launch, 3.4 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  CHSC96215  Carex comosa R. Fischer 2006-7-23 929 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected near south end of Big Lake, the western shore, at end of a long drainage arm adjacent park road. Carex growing in water at shoreline. 1007 Comment
  JEPS113349  Carex comosa R. Fischer 2006-7-23 929 Shasta Ahjumawi Lava Springs State Park, 3 mi N of McArthur, on the W edge of the Modoc Plateau. Collected near S end of Big Lake, the W shore, at end of a long drainage arm adjacent park road. 1007 Comment
  CHSC97350  Carex cusickii R. Fischer 2006-7-22 864 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. 1007 Comment
  CDA36837  Carex densa CDFA Staff 2001-6-6 s.n. Shasta Lava Creek Lodge, near Eastman Lake. 0 Comment
  CHSC89769  Carex douglasii R. Fischer; J. Marr 2004-5-27 410 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected next to camp 7, near Horr Pond. 1013 Comment
  CDA36866  Carex lanuginosa CDFA Staff 2001-6-6 s.n. Shasta Lava Creek Lodge, near Eastman Lake. 0 Comment
  CHSC92970  Carex nebrascensis R. Fischer 2005-5-21 505 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. At north end of Big Lake in meadow near water edge. 1007 Comment
  CHSC96303  Carex nebrascensis R. Fischer 2006-7-21 885 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected near Crystal Springs from grassy meadows along the shoreline. 1007 Comment
  CHSC97349  Carex nebrascensis R. Fischer 2006-7-25 866 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. 1007 Comment
  CDA37352  Carex pellita CDFA Staff s.n. Shasta Lava Creek Lodge, near Eastman Lake. 0 Comment
  CHSC93212  Carex pellita R. Fischer 2005-5-19 629 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected along water edge of outer Horr Pond, southern island ring. 1007 Comment
  CHSC96302  Carex pellita R. Fischer 2006-7-21 886 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected near Crystal springs from grassy meadows along the shoreline. 1007 Comment
  CHSC89770  Carex praegracilis R. Fischer; J. Marr 2004-5-26 409 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected N shore, E side, Big Lake. 1008 Comment
  CHSC97351  Carex praegracilis R. Fischer 2006-7-21 874 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. 1007 Comment
  CHSC98414  Carex praegracilis R. Fischer 2006-7-23 875 Shasta Ahjumawi Lava Springs State Park, 3 miles N of McArthur, on the western edge of the Modoc Plateau. Grassy meadow near the water along the western shore of Big Lake, southern end. 1007 Comment
  CHSC98415  Carex simulata R. Fischer 2006-7-21 867 Shasta Ahjumawi Lava Springs State Park, 3 miles N of McArthur, on the western edge of the Modoc Plateau. Near western edge of park, near to water, on a grassy shoreline. 1007 Comment
  CHSC97347  Carex subfusca R. Fischer 2006-7-22 862 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. 1007 Comment
  CDA14177  Carex utriculata G. F. Hrusa, T. Holmes 1997-6-18 13869 Shasta Fall River; Fall River upstream from Glenburn. Comment
  CHSC88745  Castilleja angustifolia R. Fischer; J. Marr 2004-5-25 260 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. 1021 Comment
  CHSC93220  Castilleja angustifolia R. Fischer 2005-7-20 465 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Near Spatter Cone Trail, western loop, boulder field. 1051 Comment
  CHSC93323  Castilleja attenuata R. Fischer 2005-5-22 560 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected on main park road between Crystal Springs and Ya-She. Near water edge on road bed. 1008 Comment
  CHSC94042  Castilleja attenuata R. Fischer 2005-5-23 707 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants were growing outside of park on Rat Farm Road on high mountain meadow that was once the edge of the old McArthur Swamp, 1 or 2 miles north of McArthur. 1011 Comment
  CHSC68726  Castilleja campestris subsp. campestris Vernon H. Oswald 1997-5-20 8468 Shasta Gravel road to McArthur Swamp and Big Lake 3.0 mi north of McArthur. 1005 Comment
  CHSC93106  Castilleja lacera R. Fischer 2005-5-23 487 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc plateau. Plants growing on transmontane meadow north of McArthur along Rat Farm Road. 1013 Comment
  CHSC96210  Castilleja lacera R. Fischer 2006-5-14 958 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected in a very shallow swell on Juniper Trail ca. 1 mile west of Big Lake in a small mixed forest opening. 1027 Comment
  CHSC96268  Castilleja lacera R. Fischer 2006-5-15 944 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected on a grassy slope in an open juniper woodland with an east facing slope above the lower end of Big Lake. 1021 Comment
  CHSC93320  Castilleja tenuis R. Fischer 2005-5-21 557 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected from meadow edge along the west side of Big Lake. 1010 Comment
  CHSC95139  Caulanthus lasiophyllus R. D. Fischer 2005-4-14 855 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along Rat Farm Road ca. 2 miles north of McArthur on meadowland adjacent to the old McArthur Swamp. 1011 Comment
  CHSC89690  Ceanothus integerrimus R. Fischer; J. Marr 2004-8-15 367 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located N end, E side, Big Lake. 1010 Comment
  RSA702146  Ceanothus integerrimus R. Fischer, Jenny Marr 2004-8-15 367 Shasta Ahiumawi Lava Springs State Park, 3 miles N of McArthur, on western edge Modoc Plateau. Located N end Big Lake. 1011 Comment
  UC18315  Ceanothus pumilus Milo S. Baker 1894-6-1 Shasta Lava beds near Fall River Valley; Lava beds near Fall River Valley Comment
  CHSC89638  Centaurea squarrosa R. Fischer 2004-7-5 336 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located along Lava Spring Trail between Camp 7 and Crystal Springs. On or next to this road along its length. 1011 Comment
  UCR255889  Centaurea virgata subsp. squarrosa Greg de Nevers 2001-7-25 12621 Shasta Ahjumawi [Lava Springs] State Park 915 Comment
  CHSC92983  Cerastium fontanum subsp. vulgare R. Fischer 2005-5-21 462 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Along water edge near northern end of Big Lake in meadow. 1007 Comment
  CHSC89695  Cerastium glomeratum R. Fischer; J. Marr 2004-5-26 404 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along N shore of Big Lake. 1008 Comment
  CDA20537  Ceratophyllum demersum K. Martyn 2005-6-3 PDR 1292146 Shasta McArthur swamp. 1005 Comment
  CHSC88737  Cercis occidentalis R. Fischer; J. Marr 2004-5-25 251 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along the Spattercone Trail. 1021 Comment
  CHSC88342  Cercocarpus betuloides var. betuloides R. Fischer; J. Marr 2004-5-24 225 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. Located along Spatter Cone Trail. 1051 Comment
  CHSC88341  Cercocarpus ledifolius var. intermontanus R. Fischer; J. Marr 2004-5-24 224 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. Located along Spatter Cone Trail. 1051 Comment
  CHSC88764  Chamaebatiaria millefolium R. Fischer 2004-7-7 279 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located w. Spatter Cone Trail. 1036 Comment
  CHSC96203  Chamaebatiaria millefolium R. Fischer 2006-7-26 917 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Shrub growing along the western trail approach of the Spattercone Trail in a volcanic ravine. 1018 Comment
  UC54344  Chamaebatiaria millefolium H. M. Hall and E. B. Babcock June, 1903 4245 Shasta Sierra Nevada Mountains, north-eastern Shasta County Sierra Nevada Mountains 1219 Comment
  CHSC96295  Chamaesyce serpillifolia subsp. serpillifolia R. Fischer 2006-7-20 910 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected off east side of Rat Farm Road ca. 1 mile north of McArthur. Plants growing in a drainage swell on a sagebrush/Artemisia transmontane meadow. 1011 Comment
  CHSC89632  Chamerion angustifolium subsp. circumvagum R. Fischer; J. Marr 2004-8-15 371 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located N end Big Lake. Within 50 ft of shoreline. 1010 Comment
  CHSC96175  Chenopodium album R. Fischer 2006-7-21 895 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from grassy meadow, near water's edge, at Crystal Springs. 1008 Comment
  CHSC94041  Chenopodium berlandieri R. Fischer 2005-7-18 706 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants were growing near the western entrance to the park, along main park road, among brush and oak cover. 1011 Comment
  RSA816  Chrysothamnus nauseosus subsp. albicaulis E. R. Johnson 1928-8-31 1190 Shasta Fall River Valley Comment
  CHSC89649  Chrysothamnus viscidiflorus subsp. lanceolatus R. Fischer; J. Marr 2004-8-15 357 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Near camp 7. 1016 Comment
  CHSC89664  Chrysothamnus viscidiflorus subsp. lanceolatus R. Fischer; J. Marr 2004-8-13 347 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Near camp 7. 1016 Comment
  CDA19141  Cirsium arvense K. Martyn 2001-7-2 PDR 1198399 Shasta Modoc Plateau; McArthur 0 Comment
  CHSC93283  Cirsium douglasii var. breweri R. Fischer 2005-7-15 545 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected from open rocky ground off the back side (western edge) of several feeder ponds to Ya-She Pond. 1007 Comment
  CHSC89637  Cirsium occidentale var. candidissimum R. Fischer 2004-7-3 337 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected near Camp 7. 1010 Comment
  CHSC89674  Cirsium scariosum R. Fischer; J. Marr 2004-5-22 376 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along rd. between McArthur and Rat Farm. Mdw on edge of the old McArthur Swamp. 1013 Comment
  CHSC68720  Clarkia gracilis subsp. gracilis Vernon H. Oswald 1997-5-20 8465 Shasta Gravel road to McArthur Swamp and Big Lake 1.0 mi north of McArthur. 1005 Comment
  CHSC88308  Clarkia gracilis subsp. gracilis R. Fischer; J. Marr 2004-5-24 192 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Lava Springs Trail near Horr Pond. At edge of meadow. 1008 Comment
  CHSC88329  Clarkia lassenensis R. Fischer; J. Marr 2004-5-24 212 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Spatter Cone Trail. 1057 Comment
  CHSC93098  Clarkia purpurea subsp. quadrivulnera R. Fischer 2005-7-17 531 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc plateau. Located in open pine/juniper woodland at edge of a meadow on the west shore of Big Lake. 1011 Comment
  CHSC88331  Clarkia rhomboidea R. Fischer; J. Marr 2004-5-24 214 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Spatter Cone Trail. 1051 Comment
  CHSC88358  Clarkia rhomboidea R. Fischer; J. Marr 2004-5-28 242 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Lava Springs Trail between Crystal Springs and Ja-She. 1010 Comment
  CHSC88749  Claytonia rubra subsp. rubra R. Fischer; J. Marr 2004-5-27 264 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located on the upper roadbed on Spattercone Trail. 1010 Comment
  CHSC93296  Claytonia rubra subsp. rubra R. Fischer 2005-4-20 650 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected off Juniper Trail ca. half mile northeast of camp 7 in an Oregon White Oak/ Calif. Blackoak woodland. 1028 Comment
  CHSC89658  Clematis lasiantha R. Fischer 2004-7-5 318 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Found next to Lava Springs Trail, E of old Ranger Station, at edge of woods and mdw. 1010 Comment
  CHSC89761  Collinsia parviflora R. Fischer; J. Marr 2004-5-27 428 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located near camp 7. 1013 Comment
  CHSC89762  Collinsia parviflora R. Fischer; J. Marr 2004-5-26 429 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located near camp 7. 1013 Comment
  CHSC93308  Collinsia parviflora R. Fischer 2005-4-14 563 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected at camp 7. 1013 Comment
  CHSC88772  Collomia grandiflora R. Fischer 2004-7-3 287 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Juniper Trail ne. of Camp 7. 1036 Comment
  CHSC88773  Collomia grandiflora R. Fischer 2004-7-2 288 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located near junction of Spatter Cone Trail and Fishawk Trail. 1036 Comment
  CHSC92995  Comandra umbellata subsp. californica R. Fischer 2005-4-15 643 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected on a slope between Horr Pond and Crystal Springs. 1011 Comment
  CHSC88758  Cornus sericea subsp. sericea R. Fischer; J. Marr 2004-5-28 273 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Lava Springs Trail between Crystal Springs and Ya-She. 1013 Comment
  CHSC88339  Crepis acuminata R. Fischer; J. Marr 2004-5-25 222 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. Located along Spatter Cone Trail. 1036 Comment
  CHSC88741  Crepis acuminata R. Fischer; J. Marr 2004-5-23 255 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Lava Spring Trail. Between Horr Pond and Big Lake. 1011 Comment
  CHSC93337  Crepis bakeri R. Fischer 2005-5-23 483 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Meadow north of McArthur along Rat Farm Road. This mdw. area is near the old McArthur Swamp lands. 1013 Comment
  CHSC88310  Crepis occidentalis subsp. occidentalis R. Fischer; J. Marr 2004-5-23 194 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Lava Springs Trail. At edge of meadow on the western shore of the southern end of Big Lake. 1010 Comment
  CHSC89707  Cryptantha torreyana R. Fischer; J. Marr 2004-5-28 390 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected off Lava Springs Trail between Horr Pond and Crystal Springs. 1010 Comment
  CHSC93094  Cryptantha torreyana R. Fischer 2005-5-28 627 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc plateau. Plants collected near Ya-She. 1010 Comment
  GH356414  Cupressus bakeri C. O. Stone 1964-7-4 293 Unknown on recent lava flows near NE corner of Section 35, NE 1/4 NE 1/4 Sec. 35; Fall River Mills quadrangle 1133 Comment
  UC1321447 Image available Cupressus bakeri C. O. Stone 1964-7-4 293 Shasta on recent lava flow near ne corner Sec. 35 (NE 1/4, NE 1/4, NE 1/4); Fall River Mills Quad. 1133 Comment
  CHSC89715  Cymopterus terebinthinus var. californicus R. Fischer; J. Marr 2004-5-28 399 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along Lava Springs Trail E Crystal Springs. 1051 Comment
  CHSC89719  Cymopterus terebinthinus var. californicus R. Fischer; J. Marr 2004-5-24 395 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along Spatter Cone Trail. 1051 Comment
  CHSC88328  Cystopteris fragilis R. Fischer; J. Marr 2004-5-24 211 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Spatter Cone Trail. 1051 Comment
  CHSC93309  Cystopteris fragilis R. Fischer 2005-4-15 564 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected at an outcrop of volcanic boulders between Horr Pond and Crystal Springs. 1013 Comment
  CHSC96198  Cystopteris fragilis R. Fischer 2006-5-14 966 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from a rocky ledge inside of a collapsed lava tube in an open juniper/brush woodland on the nw slope above upper Big Lake. 1011 Comment
  CDA36833  Dactylis glomerata CDFA Staff 1999-6-1 s.n. Shasta Lava Creek Lodge, near Eastman Lake. 0 Comment
  CHSC93052  Dactylis glomerata R. Fischer 2005-7-22 469 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants growing along main park road between Crystal Springs and Ya-She at edge of a small meadow near a mix of YPF-oak-brush woodlands that comprised the shoreline cover of the nearby waterway. 1008 Comment
  RSA712550  Dactylis glomerata R. Fischer 2005-7-22 469 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau; along main park road between Crystal Springs and Ya-She at edge of a small meadow 1009 Comment
  CHSC88340  Delphinium nudicaule R. Fischer; J. Marr 2004-5-24 223 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. Located along Spatter Cone Trail. 1036 Comment
  CHSC93059  Delphinium nuttallianum R. Fischer 2005-4-17 511 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants growing on the north rim of a conic depression pond located west of Big Lake. 1013 Comment
  CHSC93060  Delphinium nuttallianum R. Fischer 2005-4-17 511 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants growing on the north rim of a conic depression pond located west of Big Lake. 1013 Comment
  CHSC96185  Delphinium nuttallianum R. Fischer 2006-5-12 902 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plant collected from a meadow in an open juniper/oak woodland off of Juniper Trail, ca. 1 mile ne of campsite 7. 1036 Comment
  CHSC89763  Deschampsia danthonioides R. Fischer; J. Marr 2004-5-22 414 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off road between McArthur and Rat Farm, E side. In vernal pool on mdw., part of the old McArthur Swamp. 1008 Comment
  CHSC89688  Descurainia pinnata subsp. halictorum R. Fischer; J. Marr 2004-5-27 392 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected off Lava Springs Trail between Horr Pond and Crystal Springs. 1011 Comment
  CHSC93063  Descurainia pinnata subsp. halictorum R. Fischer 2005-5-21 502 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants growing along western shore of Big Lake at meadow edge. 1010 Comment
  CHSC93062  Descurainia sophia R. Fischer 2005-5-20 515 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plant collected at camp 8, location with Oregon White Oak overstory. 1010 Comment
  CHSC92999  Dianthus deltoides subsp. deltoides R. Fischer 2005-7-18 458 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Along main park road, west of Ya-She camps and east of old homestead, on the western border of the park in YPF. 1011 Comment
  JEPS90742  Dianthus deltoides subsp. deltoides Dean Wm. Taylor with Glenn Clifton 1990-6-11 10867 Shasta 1.2 mi upriver from Glenburn Road (in right-of-way of pipeline); Pit River watershed, Fall River Valley, Fall River Comment
  CHSC93008  Dichelostemma capitatum subsp. capitatum R. Fischer 2005-4-17 518 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. On east facing slope above the lower end of Big Lake. 1028 Comment
  CHSC93293  Dichelostemma capitatum subsp. capitatum R. Fischer 2005-4-17 574 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants growing on east facing slope in openings of juniper/pine woodlands west of lower Big Lake. 1010 Comment
  CHSC93303  Dichelostemma multiflorum R. Fischer 2005-7-16 552 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected from upper east side of Spatter Cone Trail. 1054 Comment
  CHSC88751  Diplacus layneae R. Fischer; J. Marr 2004-5-28 266 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located on the roadbed of Lava Springs Trail between Crystal Springs and Ya-She. 1011 Comment
  CHSC88769  Diplacus layneae R. Fischer 2004-7-7 284 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located on upper Spatter Cone Trail. 1051 Comment
  CHSC89773  Diplacus layneae R. Fischer; J. Marr 2004-7-2 426 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off Spatter Cone Trail. 1016 Comment
  CHSC89774  Diplacus layneae R. Fischer; J. Marr 2004-5-24 427 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off Spatter Cone Trail. 1016 Comment
  CHSC89792  Diplacus layneae R. Fischer; J. Marr 2004-5-24 411 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected off Spatter Cone Trail. 1051 Comment
  CHSC96277  Diplacus tricolor R. Fischer 2006-5-10 935 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the east side of Rat Farm Road (between ALSSP and McArthur) ca. 1 mile south of the boat launch. Plants growing in vernal pool adjacent road. 1011 Comment
  CHSC89631  Dipsacus fullonum R. Fischer; J. Marr 2004-8-15 372 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along shoreline near Ya-She pond. Along roadside and marsh edges. 1010 Comment
  CHSC88750  Distichlis spicata R. Fischer; J. Marr 2004-5-28 265 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located at mdw. edge, next to Horr Pond. Boat takeout for Camp 7. 1007 Comment
  CHSC96201  Distichlis spicata R. Fischer 2006-7-21 914 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected in alkaline scalds at the edge of Horr Pond, near campsite 7. 1007 Comment
  CHSC96255  Distichlis spicata R. Fischer 2006-7-23 869 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the (Scirpus covered) shore line of a conic depression pond near the lower and western edge of Big Lake. 1008 Comment
  CHSC96270  Downingia cuspidata R. Fischer 2006-5-10 942 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the east side of Rat Farm Road (between ALSSP and McArthur) ca. 1 mile south of the boat launch. Plants growing in vernal pool adjacent road. 1011 Comment
  CHSC68716  Downingia insignis Vernon H. Oswald 1997-5-20 8466 Shasta Gravel road to McArthur Swamp and Big Lake 3.0 mi north of McArthur. 1005 Comment
  CHSC88348  Downingia insignis R. Fischer; J. Marr 2004-5-22 231 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. SE of Ahjumawi LSSP, on access rd. to Rat Farm, n. of McArthur. In vernal pool on grasslands, part of the old McArthur Swamp. 1010 Comment
  CHSC88753  Downingia pulcherrima R. Fischer; J. Marr 2004-5-22 268 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Found in vernal pools on grazing land of the old McArthur Swamp. Located off access rd. to ALSSP between McArthur and Rat Farm. 1010 Comment
  CHSC509  Draba verna P. Delaplane 1965-4-3 35 Shasta Near Squaw hole rocks. Squaw Creek area of the Harry Horr Ranch. Ca. 5 mi. ne of Glenburn. 1219 Comment
  CHSC89717  Draba verna R. Fischer; J. Marr 2004-5-24 397 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along Spatter Cone Trail. 1027 Comment
  CHSC89629  Dysphania pumilio R. Fischer; J. Marr 2004-8-15 374 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. On roadbed Lava Spring Trail between Horr Pond and Crystal Springs. 1010 Comment
  CHSC112693  Elatine californica Lowell Ahart; John Dittes 2013-6-9 18779 Shasta Bottom of a deep irrigation ditch, Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CHSC93203  Eleocharis coloradoensis R. Fischer 2005-7-18 520 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. On the mud bar of one of the islands ringing the outer boundaries of Horr Pond. Located at the eastern end of the island chain and at the water's edge. 1007 Comment
  CHSC96181  Eleocharis coloradoensis R. Fischer 2006-7-20 889 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected on the southern boundary of Horr Pond, on a low levee, at the water line. 1007 Comment
  CHSC96180  Eleocharis macrostachya R. Fischer 2006-7-23 890 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the (Scirpus covered) shore line of a conic depression pond near the lower and western edge of Big Lake. 1008 Comment
  CHSC96254  Eleocharis macrostachya R. Fischer 2006-7-23 870 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the (Scirpus covered) shore line of a conic depression pond near the lower and western edge of Big Lake. 1008 Comment
  CHSC112400  Eleocharis parishii Lowell Ahart; John Dittes 2013-6-9 18790 Shasta On the banks of a deep irrigation ditch, Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS120920  Eleocharis parishii Lowell Ahart, John Dittes 2013-6-9 18790 Shasta Hollenbeck Field, 950 feet E of Rat Farm Boat Launch, 3.4 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  RSA0106688  Eleocharis parishii Lowell Ahart, John Dittes 2013-6-9 18790 Shasta Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air miles north of McArthur, Fall River Valley, McArthur Swamp. 290 Comment
  CDA14151  Elodea canadensis G. F. Hrusa, T. Holmes 1997-6-18 13865 Shasta Fall River; Common colonial aquatic in the Fall River upstream from Glenburn. Comment
  CDA14153  Elodea nuttallii G. F. Hrusa, T. Holmes 1997-6-18 13866 Shasta Fall River; Scattered aquatic in small colonies. Fall River upstream from Glenburn. Mostly in areas with +- moving water. Comment
  CHSC96179  Elodea nuttallii R. Fischer 2006-7-23 891 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from an arm of water feeding Big Lake, the southern end and western shore. 1007 Comment
  CHSC92974  Elymus caput-medusae R. Fischer 2005-5-23 486 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. On meadow north of McArthur along Rat Farm Road. Near the old McArthur Swamp lands. 1013 Comment
  CHSC96284  Elymus caput-medusae R. Fischer 2006-7-21 926 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from dry grassy meadow and roadbed, disturbed soil, between Horr Pond and campsite 7. 1011 Comment
  CHSC93215  Elymus cinereus R. Fischer 2005-7-17 519 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Along the west shore of Big Lake in meadow. 1010 Comment
  CHSC89779  Elytrigia pontica subsp. pontica R. Fischer; J. Marr 2004-8-14 434 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off Lava Springs Trail, between Horr Pond and Big Lake. At edge of mdw. 1010 Comment
  CHSC89669  Epilobium brachycarpum R. Fischer; J. Marr 2004-8-13 363 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located near camp 7 in mdws. 1011 Comment
  CHSC88793  Epilobium ciliatum subsp. ciliatum R. Fischer 2004-7-3 298 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located at water edge of w. shore, n end, of Big Lake. 1008 Comment
  CHSC93206  Epilobium ciliatum subsp. ciliatum R. Fischer 2005-7-14 548 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from marsh edge west of camp 7 along shore of Horr Pond. In spring waters around the park. 1007 Comment
  CHSC96264  Epilobium ciliatum subsp. ciliatum R. Fischer 2006-10-23 948 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected on the north edge of a conic depression pond near the lower and western edge of Big Lake. 1008 Comment
  CHSC96305  Epilobium ciliatum subsp. ciliatum R. Fischer 2006-7-25 883 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected at the waterline and within the water at Ja-She Springs. 1007 Comment
  CHSC93001  Epilobium densiflorum R. Fischer 2005-7-18 536 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. At edge of drainage ditch just east of the old ranger station at western end of park (Bowman's Ditch). 1008 Comment
  CHSC93002  Epilobium densiflorum R. Fischer 2005-7-18 536 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. At edge of drainage ditch just east of the old ranger station at western end of park (Bowman's Ditch). 1008 Comment
  CHSC96174  Epilobium densiflorum R. Fischer 2006-7-22 877 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the moist meadow and water edge of Bowman ditch. The ditch drains a heavy flow of spring water near the western entrance of the park. South side of park road and west side of ditch. 1008 Comment
  CHSC93090  Epilobium minutum R. Fischer 2005-5-21 497 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants growing among lava boulders near old dozer trail just north of upper Big Lake. 1021 Comment
  CHSC93091  Epilobium minutum R. Fischer 2005-5-22 613 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants growing in gravelly soil and rocks near main park road between Ya-She and Crystal Springs. 1008 Comment
  CHSC96191  Epilobium pygmaeum R. Fischer 2006-7-22 897 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from a moist grassy meadow, adjacent main park road, western end of park, and ca. 200 yds. east of Bowman ditch. 1008 Comment
  CHSC96256  Epipactis gigantea R. Fischer 2006-7-25 919 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the ne side of Ja-She Springs in heavy grass/brush, a YPF woodland. 1008 Comment
  CHSC96297  Equisetum arvense R. Fischer 2006-5-12 908 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the eastern shore, north end, of Big Lake on the edge of a grassy meadow. 1007 Comment
  CHSC88731  Eriastrum signatum R. Fischer; J. Marr 2004-5-24 245 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along and on Spattercone Trail. 1036 Comment
  CHSC89702  Eriastrum signatum R. Fischer; J. Marr 2004-8-15 380 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected on Lava Springs Trail just W of camp 7. 1011 Comment
  CHSC89663  Ericameria nauseosa var. oreophila R. Fischer; J. Marr 2004-8-13 348 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located near camp 7. 1014 Comment
  CAS-BOT-BC299449  Ericameria nauseosa var. speciosa E. R. Johnson 1928-8-31 1190 Shasta Fall River Valley Comment
  CAS-BOT-BC299450  Ericameria nauseosa var. speciosa E. R. Johnson 1928-8-31 1190 Shasta Fall River Valley Comment
  CHSC89712  Ericameria nauseosa var. speciosa R. Fischer; J. Marr 2004-8-14 385 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected on W shore above Big Lake. 1013 Comment
  CHSC89675  Ericameria parryi var. latior R. Fischer; J. Marr 2004-8-12 354 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Along rd. between McArthur and Rat Farm. Edge of old McArthur Swamp. 1011 Comment
  CHSC96257  Erigeron canadensis R. Fischer 2006-7-23 918 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the (Scirpus covered) shore line of a conic depression pond near the lower and western edge of Big Lake. 1008 Comment
  CHSC89771  Erigeron divergens R. Fischer; J. Marr 2004-7-3 438 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located on W shore, S end, of Big Lake on Lava Springs Trail. 1010 Comment
  CHSC89772  Erigeron divergens R. Fischer; J. Marr 2004-7-6 406 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected off Lava Springs Trail on western shore of Big Lake. On mdw/roadbed. 1011 Comment
  CHSC89777  Erigeron divergens R. Fischer; J. Marr 2004-8-15 407 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected off Lava Springs Trail on western shore of Big Lake. On mdw/roadbed. 1011 Comment
  CHSC88776  Erigeron inornatus var. inornatus R. Fischer 2004-7-3 291 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located near junction Juniper Trail and Fishawk Trail. 1036 Comment
  CHSC89683  Erigeron philadelphicus R. Fischer 2004-7-3 325 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located on Lava Springs Trail near S end, W shore of Big Lake. Old roadbed at edge of mdw. 1008 Comment
  CHSC89781  Erigeron philadelphicus R. Fischer; J. Marr 2004-5-28 419 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off Lava Springs Trail between Ya-She and Crystal Springs. Along shoreline. 1008 Comment
  CHSC96213  Erigeron pumilus var. intermedius R. Fischer 2006-5-14 955 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected on a moist, grassy slope adjacent a conic depression pond near the lower and western edge of Big Lake. 1007 Comment
  UCR255880  Eriogonum Greg de Nevers 2001-7-25 12617 Shasta Ahjumawi [Lava Springs] State Park 915 Comment
  CHSC117336  Eriogonum congdonii L. P. Janeway; B. Castro 2016-8-1 12127 Trinity Klamath Ranges. Tamarack Lake, Trinity Mountains. 1785 Comment
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Nov 28 2018
  CHSC89776  Eriogonum nudum var. pubiflorum R. Fischer 2004-7-2 330 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected near camp 7. 1013 Comment
  CHSC89682  Eriogonum sphaerocephalum var. halimioides R. Fischer 2004-7-3 326 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off Spattercone Trail near the tr. loop cross-over. 1036 Comment
  RSA702138  Eriogonum sphaerocephalum var. halimioides R. Fischer 2004-7-3 326 Shasta Ahjumawi Lave Springs State Park, 3 mi. N. of McArthur, on western edge Modoc Plateau. Located off Spattercone Trail near the tr.loop cross-over. 1037 Comment
  CHSC88796  Eriogonum umbellatum var. modocense R. Fischer 2004-7-7 301 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located near Spatter Cone Trail, w. side of trail loop, on w. return leg. 1040 Comment
  CHSC88795  Eriogonum umbellatum var. nevadense R. Fischer 2004-7-7 300 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located near Spatter Cone Trail, w. side of trail loop at middle crossing. 1042 Comment
  CHSC89713  Eriogonum umbellatum var. nevadense R. Fischer; J. Marr 2004-5-24 401 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along Spatter Cone Trail. 1036 Comment
  CHSC89714  Eriogonum umbellatum var. nevadense R. Fischer; J. Marr 2004-5-24 400 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along Spatter Cone Trail. 1036 Comment
  CHSC88771  Eriogonum vimineum R. Fischer 2004-7-2 286 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Collected at edge of Lava Springs Trail just w. Camp 7. 1010 Comment
  CHSC96282  Eriophyllum lanatum var. achilleoides R. Fischer 2006-5-15 930 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from an open juniper woods near a volcanic boulder outcrop on an east facing slope above lower Big Lake. 1024 Comment
  CHSC88349  Eriophyllum lanatum var. grandiflorum R. Fischer; J. Marr 2004-5-25 233 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. Located along Spatter Cone Trail. 1054 Comment
  CHSC93033  Eriophyllum lanatum var. grandiflorum R. Fischer 2005-5-20 506 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Along Fishhawk Trail. 1043 Comment
  CHSC88763  Eryngium mathiasiae R. Fischer 2004-7-7 278 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. In dry vernal pools of the grazing land of old McArthur Swamp. Located off access rd. to ALSSP between McArthur and Rat Farm. 1008 Comment
  CHSC88792  Erythranthe guttata R. Fischer 2004-7-2 297 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. At edge of Horr Pond below Camp 7. 1010 Comment
  CHSC89668  Erythranthe guttata R. Fischer; J. Marr 2004-5-26 394 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along W shore of Big Lake. Near water edge. 1008 Comment
  CHSC96281  Erythranthe microphylla R. Fischer 2006-5-15 931 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected on a moist, grassy slope adjacent to a conic depression pond near the lower and western edge of Big Lake. 1008 Comment
  CHSC96272  Erythranthe pulsiferae R. Fischer 2006-5-11 940 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plant collected along the western loop of the Spattercone Trail. 1043 Comment
  CHSC89633  Eschscholzia californica subsp. californica R. Fischer; J. Marr 2004-8-15 370 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located N end Big Lake E side. On mdw. More obs. near Ya-She campsites. 1011 Comment
  CHSC89785  Euthamia occidentalis R. Fischer; J. Marr 2004-8-14 416 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Off Lava Springs Trail, near camp 7. At water edge of Horr Pond on mdw. 1008 Comment
  CDA36831  Festuca arundinacea CDFA Staff 1999-6-1 s.n. Shasta Lava Creek Lodge, near Eastman Lake. 0 Comment
  CHSC96238  Festuca arundinacea R. Fischer 2005-5-21 615 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along main park road mid-way up the western shore of Big Lake. 1008 Comment
  CHSC112778  Festuca myuros Lowell Ahart; John Dittes 2013-6-9 18798 Shasta On the bank of a deep irrigation ditch, Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CHSC112779  Festuca myuros Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18784 Lassen Along a fence on the west side of McArthur Diversion Canal, 2.1 air-miles south of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS120923  Festuca myuros Lowell Ahart, John Dittes, Todd Sloat 2013-6-9 18784 Shasta Along the fence on the W side of the north-south road, on the W side of McArthur Diversion Canal, 2.1 air miles S of Rat Farm Boat Launch, 1.2 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  JEPS120927  Festuca myuros Lowell Ahart, John Dittes 2013-6-9 18798 Shasta Hollenbeck Field, 950 feet E of Rat Farm Boat Launch, 3.4 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  CHSC93097  Festuca occidentalis R. Fischer 2005-5-22 492 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc plateau. Plants growing along main park road between Crystal Springs and Ya-She. 1008 Comment
  CHSC89643  Frangula rubra R. Fischer 2004-7-4 327 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located near Lava Springs Trail between Camp 7 and Crystal Springs. 1010 Comment
  CHSC89676  Frangula rubra R. Fischer; J. Marr 2004-8-15 366 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located N end of Big Lake, E side. 1010 Comment
  CHSC93223  Frangula rubra R. Fischer 2005-7-18 460 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Along main park road, near Ya-She pond. 1010 Comment
  CHSC93020  Fritillaria recurva R. Fischer 2005-4-16 579 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Along Fishhawk Trail. 1036 Comment
  CHSC93224  Galium bolanderi R. Fischer 2005-7-15 591 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. On back side (western edge) Ja-She Pond. 1008 Comment
  CHSC93225  Galium bolanderi R. Fischer 2005-7-15 591 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. On back side (western edge) Ja-She Pond. 1008 Comment
  CHSC93298  Galium trifidum var. pacificum R. Fischer 2005-7-15 593 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plant was growing in pine duff on back side (western edge) Ja-She Pond. 1011 Comment
  CHSC93207  Gayophytum diffusum subsp. parviflorum R. Fischer 2005-7-16 550 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected from Spatter Cone Trail. 1048 Comment
  CHSC93342  Gayophytum diffusum subsp. parviflorum R. Fischer 2005-7-16 550 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from Spatter Cone Trail. 1048 Comment
  CHSC88800  Geum macrophyllum R. Fischer 2004-7-3 305 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located at edge of mdw. at n. end of Big Lake, western shore. 1008 Comment
  CHSC89718  Githopsis diffusa subsp. robusta R. Fischer; J. Marr 2004-5-24 396 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along Spatter Cone Trail. 1027 Comment
  CHSC93301  Githopsis diffusa subsp. robusta R. Fischer 2005-4-20 649 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected off the gravelly volcanic soil of the upper Spatter Cone Trail loop . 1051 Comment
  CHSC93194  Gnaphalium palustre R. Fischer 2005-7-18 595 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected off the main park road bed, between Ya-She camps and the old Ranger Station on the western edge of the park. 1011 Comment
  CHSC93334  Gnaphalium palustre R. Fischer 2005-7-18 597 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected from a roadbed west of the old Ranger Station and near the Bowman drainage ditch. 1011 Comment
  CHSC68919  Grindelia nana Vernon Oswald 1997-6-28 8654 Shasta Gravel road to Rat Farm (on Big Lake) 3.0 mi north of McArthur. In meadow. 1005 Comment
  CHSC88767  Grindelia nana R. Fischer 2004-7-7 282 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along ALSSP access rd. between McArthur and Rat Farm, closer to McArthur. 1010 Comment
  CHSC71692  Heliotropium curassavicum Vernon H. Oswald 1998-8-30 9558 Shasta Dirt road heading north of McArthur to the boat ramp on Big Lake. Roadside. 1005 Comment
  CHSC88765  Heliotropium curassavicum R. Fischer 2004-7-6 280 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located at edge of depression lake w. of lower Big Lake. 1007 Comment
  CHSC89782  Hemizonella minima R. Fischer; J. Marr 2004-5-24 418 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located on Spatter Cone Trail. 1051 Comment
  UC54063  Hemizonella minima H. M. Hall and E. B. Babcock June, 1903 4224 Shasta Lava Beds, ne Shasta County Sierra Nevada Mountains 1219 Comment
  CHSC93310  Hesperochiron californicus R. Fischer 2005-4-15 565 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected from the Ya-She Pond display sign area [and] in the area of camp 9. 1008 Comment
  CHSC93305  Hesperolinon micranthum R. Fischer 2005-8-15 547 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected from the open pine/juniper woodlands north of camp 7. 1018 Comment
  CHSC96279  Hesperolinon micranthum R. Fischer 2006-7-21 933 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected adjacent main park road west of Horr Pond, growing in disturbed soil. 1008 Comment
  CAS-BOT-BC316034  Hieracium scouleri A. A. Heller; E. B. Babcock 1903-6-1 4225 Shasta North-eastern Shasta County, Sierra Nevada Mountains 1219 Comment
  CDA36832  Holcus lanatus CDFA Staff 1999-6-1 s.n. Shasta Lava Creek Lodge, near Eastman Lake. 0 Comment
  CDA36836  Holcus lanatus CDFA Staff 2001-6-6 s.n. Shasta Lava Creek Lodge, near Eastman Lake. 0 Comment
  CHSC93327  Holcus lanatus R. Fischer 2005-5-21 632 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected from the west side, north end, of Big Lake along the main park road. 1010 Comment
  CHSC93026  Holodiscus microphyllus var. glabrescens R. Fischer 2005-7-18 530 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Located at gated entrance to main park road at western end of park. On road easement just west of gate. 1018 Comment
  CHSC93038  Holosteum umbellatum subsp. umbellatum R. Fischer 2005-4-15 501 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. In meadow north of Ya-She camps near oak woodlands. 1011 Comment
  CHSC93213  Holosteum umbellatum subsp. umbellatum R. Fischer 2005-5-21 614 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected in a meadow at the south end of Big Lake as it nears Horr Pond. 1008 Comment
  CHSC93195  Hordeum brachyantherum subsp. brachyantherum R. Fischer 2005-7-18 526 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collection made near old Ranger Station at western end of park from a meadow. 1036 Comment
  CHSC93050  Hordeum jubatum R. Fischer 2005-7-17 608 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants growing in light grassy meadows in openings of juniper/pine woodlands near camp 7. 1021 Comment
  CHSC97352  Hordeum jubatum R. Fischer 2006-7-21 868 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. 1010 Comment
  CHSC93318  Hordeum murinum subsp. leporinum R. Fischer 2005-5-21 553 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected from main park road on the west shore of Big Lake. 1010 Comment
  CHSC93226  Hordeum murinum subsp. murinum R. Fischer 2005-5-21 476 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected along west shore of Big Lake in a depression. 1021 Comment
  CHSC93292  Hypericum formosum var. scouleri R. Fischer 2005-7-15 540 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected off moist grassy meadow from the margins of Ja-She Pond. 1007 Comment
  CHSC93032  Hypericum perforatum R. Fischer 2005-7-17 534 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. In roadbed on main park road on the west side and southern end of Big Lake. At edge of meadow. 1010 Comment
  CHSC92979  Idahoa scapigera R. Fischer; J. Marr 2005-4-20 645 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected from the bottom loop of Spatter Cone Trail. 1051 Comment
  CAS-BOT-BC5563  Iliamna bakeri Milo Samuel Baker 1899-8-17 116 Shasta Fall River Valley, NE Shasta County. Comment
  CAS-BOT-BC5564  Iliamna bakeri Milo Samuel Baker 1899-8-17 116 Shasta Fall River Valley, NE Shasta County. Comment
  GH420335  Iliamna bakeri M. S. Baker 1899-8-17 116 Unknown Fall River Valley, northeastern Shasta County Comment
  POM85445  Iliamna bakeri Milo S. Baker 1899-8-17 s.n. Shasta Fall River Valley, northeastern Shasta Co. Comment
  UC127690  Iliamna bakeri H. M. Hall and E. B. Babcock Jun 1903 4235 Shasta North-Eastern Shasta County Sierra Nevada Mountains 1219 Comment
  CHSC88353  Iris missouriensis R. Fischer; J. Marr 2004-5-28 237 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. Located along Lava Springs Trail just west of Crystal Springs. In meadow. 1008 Comment
  CHSC96199  Iris missouriensis R. Fischer 2006-5-13 965 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants located near the main gated entrance, western side, to park on the edge of a white oak shaded vernal depression between two lava flow outcrops. 1011 Comment
  CHSC92972  Isoetes nuttallii R. Fischer 2005-5-21 489 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. In meadow off Juniper Trail north of camp 7. 1021 Comment
  CHSC93010  Isoetes nuttallii R. Fischer 2005-5-23 510 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Along Rat Farm Road on the meadow at edge of the old McArthur Swamp. 1013 Comment
  CHSC93331  Isoetes nuttallii R. Fischer 2004-5-22 623 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected from a vernal pool on the east side of Rat Farm Road ca. 2.5 miles north of McArthur. 1016 Comment
  CDA33433  Juncus balticus Dale Woods, V. Popescu, B. Villegas 2010-7-1 Shasta North shore of Eastman Lake. Near Lava Creek Lodge. 0 Comment
  CHSC89648  Juncus balticus R. Fischer; J. Marr 2004-8-14 358 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located at N end of Big Lake. At water edge. 1008 Comment
  CHSC89787  Juncus balticus R. Fischer; J. Marr 2004-5-24 422 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located at N end of Big Lake, shoreline. 1008 Comment
  CHSC93210  Juncus balticus R. Fischer 2005-7-18 625 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected along water edge of outer Horr Pond. 1007 Comment
  CHSC93211  Juncus balticus R. Fischer 2005-7-18 626 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected along water edge of outer Horr Pond. 1007 Comment
  CHSC89788  Juncus bufonius var. bufonius R. Fischer; J. Marr 2004-5-22 421 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off road between McArthur and Rat Farm, E side. In vernal pool on mdw, part of the old McArthur Swamp. 1011 Comment
  CHSC89691  Juncus ensifolius R. Fischer; J. Marr 2004-8-15 365 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located at edge of Ya-She pond. Mdw. 1008 Comment
  CHSC93023  Juncus ensifolius R. Fischer 2005-7-15 603 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected along edge of Ya-She Pond. 1008 Comment
  CHSC96304  Juncus ensifolius R. Fischer 2006-7-25 884 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected at north end of Ja-She Springs near water edge, a grassy opening. 1007 Comment
  RSA702147  Juncus ensifolius R. Fischer, Jenny Marr 2004-8-15 365 Shasta Ahiumawi Lava Springs State Park, 3 miles N of McArthur, on western edge Modoc Plateau. Located at edge of Ya-She pond. 1009 Comment
  CHSC96250  Juncus nevadensis R. Fischer 2006-7-22 871 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the moist meadow and water edge of Bowman ditch. The ditch drains a heavy flow of spring water near the western entrance of the park. 1008 Comment
  CDA37218  Juncus orthophyllus CDFA Staff s.n. Shasta Lava Creek Lodge, near Eastman Lake. 0 Comment
  CHSC96251  Juncus orthophyllus R. Fischer 2006-7-21 876 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from grassy meadows, near the water, in the area of Crystal Springs. 1008 Comment
  CHSC96211  Juncus uncialis R. Fischer 2006-5-10 957 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the east side of Rat Farm Road (between ALSSP and McArthur) ca. 1 mile south of the boat launch. Plants growing in a vernal pool adjacent road. 1011 Comment
  UCR255885  Lagophylla ramosissima Greg de Nevers 2001-7-25 12616 Shasta Ahjumawi [Lava Springs] State Park 915 Comment
  CHSC88321  Lagophylla ramosissima subsp. ramosissima R. Fischer; J. Marr 2004-5-24 204 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located near Camp 7, just n. of Horr Pond. 1014 Comment
  CHSC88732  Lagophylla ramosissima subsp. ramosissima R. Fischer; J. Marr 2004-5-26 246 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located between Horr Pond and Camp 7. 1008 Comment
  CHSC93315  Lamium amplexicaule R. Fischer 2005-4-17 570 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected in meadow adjacent Horr Pond and south of camp 7. 1008 Comment
  CHSC112402  Lepidium appelianum Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18785 Lassen On the east side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS120910  Lepidium appelianum Lowell Ahart, John Dittes, Todd Sloat 2013-6-9 18785 Shasta On E side of the north-south road, on the W side of McArthur Diversion Canal, 2.1 air miles S of Rat Farm Boat Launch, 1.2 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  CHSC112401  Lepidium campestre Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18782 Lassen Pasture field, about 100 yards west of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS120902  Lepidium campestre Lowell Ahart, John Dittes, Todd Sloat 2013-6-9 18782 Shasta About 100 yards W of the north-south road, on the W side of McArthur Diversion Canal, 2.1 air miles S of Rat Farm Boat Launch, 1.2 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  CDA42959  Lepidium chalepense L. Ahart, John Dittes, Todd Sloat 2013-6-9 18786 Lassen On the east side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. Comment
  CHSC112394  Lepidium chalepense Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18786 Lassen On the east side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS120903  Lepidium chalepense Lowell Ahart, John Dittes, Todd Sloat 2013-6-9 18786 Shasta On E side of the north-south road, on the W side of McArthur Diversion Canal, 2.1 air miles S of Rat Farm Boat Launch, 1.2 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  CHSC88305  Lepidium latifolium R. Fischer; J. Marr 2004-5-22 189 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. SE of Ahjumawi LSSP, on access rd. to Rat Farm, n. of McArthur. Part of the old McArthur Swamp. 1008 Comment
  CHSC88304  Lepidium perfoliatum R. Fischer; J. Marr 2004-5-22 189 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. SE of Ahjumawi LSSP, on access rd. to Rat Farm, n. of McArthur. Part of the old McArthur Swamp. 1027 Comment
  CHSC89790  Leptosiphon bolanderi R. Fischer; J. Marr 2004-5-24 425 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off Spatter Cone Trail. 1025 Comment
  CHSC89791  Leptosiphon bolanderi R. Fischer; J. Marr 2004-7-7 424 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located near camp 7. 1016 Comment
  CHSC88316  Leptosiphon ciliatus R. Fischer; J. Marr 2004-5-24 199 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Spatter Cone Trail. 1054 Comment
  CHSC89671  Lilium washingtonianum subsp. washingtonianum R. Fischer; J. Marr 2004-8-15 363 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off Juniper Trail. 1036 Comment
  CHSC88322  Linanthus pungens R. Fischer; J. Marr 2004-5-24 205 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Spatter Cone Trail. 1036 Comment
  CHSC88768  Linanthus pungens R. Fischer 2004-7-7 283 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located off Spatter Cone Trail. 1036 Comment
  CHSC88803  Linanthus pungens R. Fischer 2004-7-3 308 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located between Spatter Cone Trail and Camp 7. 1027 Comment
  CAS-BOT-BC36536  Lithocarpus densiflorus var. echinoides Edith Patterson 1908-8-1 s.n. Shasta Iron Mt. Comment
  CHSC93018  Lithophragma glabrum R. Fischer 2005-4-16 577 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected ca. mid-way along the west side loop of Spatter Cone Trail. 1051 Comment
  CHSC96300  Lithophragma glabrum R. Fischer 2006-5-11 905 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plant collected along Spattercone Trail in an open rocky juniper woodland.. 1036 Comment
  CHSC93005  Lithophragma parviflorum var. parviflorum R. Fischer 2005-4-16 578 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected 200 yds north-west of camp 7. 1021 Comment
  CHSC93039  Lithophragma parviflorum var. parviflorum R. Fischer 2005-5-21 474 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Near Fishhawk Trail west of Big Lake. 1021 Comment
  CHSC96212  Lithophragma parviflorum var. parviflorum R. Fischer 2006-5-10 956 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the east side of Rat Farm Road (between ALSSP and McArthur) ca. 1 mile south of the boat launch. Plants growing adjacent vernal pools. 1011 Comment
  CHSC96299  Lithophragma parviflorum var. parviflorum R. Fischer 2006-5-11 906 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plant collected along Spattercone Trail in a brushy woodland. 1036 Comment
  CHSC93287  Lolium perenne R. Fischer 2005-5-21 509 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants growing along parts of main park road on the western shore of Big Lake. 1010 Comment
  CHSC93322  Lolium perenne R. Fischer 2005-5-22 559 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected between camp 7 and Horr Pond on edge of main park road in a meadow. 1010 Comment
  CHSC93045  Lomatium bicolor var. leptocarpum R. Fischer 2005-7-16 607 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plant collected from bottom portion of Spatter Cone Trail loop in open juniper woodland. 1054 Comment
  CHSC93229  Lomatium bicolor var. leptocarpum R. Fischer 2005-4-16 500 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants growing near the junction of Spatter Cone Trail and Fishhawk Trail. 1048 Comment
  CHSC96194  Lomatium dissectum var. multifidum R. Fischer 2006-5-14 970 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along main park road on the western edge, north end, of Big Lake. Plants growing in outcrop of volcanic rocks with YPF overstory and brushy surrounds. 1008 Comment
  CHSC96258  Lomatium nevadense R. Fischer 2006-5-15 954 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plant collected in mixed YPF/oak/juniper woods south of Juniper Trail. 1030 Comment
  CHSC96259  Lomatium nevadense R. Fischer 2006-5-11 953 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along Spattercone Trail, at the low end of the loop, in an open juniper/brushy woodland. 1036 Comment
  CHSC88345  Lonicera interrupta R. Fischer; J. Marr 2004-5-24 228 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. Located along Spatter Cone Trail. Throughout most of the Park. 1028 Comment
  CHSC88801  Lonicera interrupta R. Fischer 2004-7-3 306 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Juniper Trail near junction of Fishawk Trail. 1027 Comment
  UC54579  Lonicera interrupta H. M. Hall and E. B. Babcock June, 1903 4227 Shasta Lava Beds of ne Shasta County Sierra Nevada Mountains 1219 Comment
  CHSC93321  Lotus corniculatus R. Fischer 2005-5-21 558 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected from road bed along the western shore of Big Lake. Along length of main park road. 1010 Comment
  UC54365  Lotus nevadensis var. nevadensis H. M. Hall and E. B. Babcock Jun 1903 4238 Shasta Lava Beds, ne Shasta County Sierra Nevada Mountains 1219 Comment
  CHSC89655  Lupinus argenteus var. argenteus R. Fischer 2004-7-5 321 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off Lava Springs Trail between old Ranger Station and Ya-She campsites. 1011 Comment
  CHSC89795  Lupinus argenteus var. argenteus R. Fischer; J. Marr 2004-9-27 340 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along northern shores Ya-She. On mdw. 1010 Comment
  CHSC88319  Lupinus argenteus var. heteranthus R. Fischer; J. Marr 2004-5-22 202 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located near Camp 7, just n. of Horr Pond. 1024 Comment
  RSA699529  Lupinus argenteus var. heteranthus R. D. Fischer, J. Marr, Bill B. Fischer 2004-5-22 0202 Shasta Fall River Mills 7.5 quad. Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. 1024 Comment
  UC54419  Lupinus argenteus var. heteranthus H. M. Hall and E. B. Babcock June, 1903 4242 Shasta Lava Beds Sierra Nevada Mountains, Lava Beds (ne Shasta County) 1219 Comment
  CHSC88318  Lupinus bicolor R. Fischer; J. Marr 2004-5-22 201 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located se of Ahjumawi LSSP, on access rd. to Rat Farm, n. of McArthur. Part of the old McArthur Swamp. 1008 Comment
  CHSC93029  Lupinus bicolor R. Fischer 2005-4-18 635 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected adjacent main park road at east end of Horr Pond along the dryer meadow edges. 1010 Comment
  CHSC93304  Lupinus lepidus var. confertus R. Fischer 2005-7-14 546 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected off Rat Farm Road on the open sage meadow north of McArthur. 1014 Comment
  CHSC112399  Lupinus microcarpus var. microcarpus Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18781 Lassen Pasture field, about 100 yards west of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CHSC88311  Lupinus microcarpus var. microcarpus R. Fischer; J. Marr 2004-5-22 195 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located se of Ahjumawi LSSP, on access rd. to Rat Farm, n. of McArthur. Part of the old McArthur Swamp. 1027 Comment
  CHSC92993  Lupinus microcarpus var. microcarpus R. Fischer 2005-5-23 485 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. On meadow north of McArthur along Rat Farm Road. This mdw. area is near the old McArthur Swamp lands. 1013 Comment
  CHSC93028  Lupinus microcarpus var. microcarpus R. Fischer 2005-5-23 528 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collection made along Rat Farm Road, north of McArthur. 1013 Comment
  JEPS120901  Lupinus microcarpus var. microcarpus Lowell Ahart, John Dittes, Todd Sloat 2013-6-9 18781 Shasta About 100 yards W of the north-south road, on the W side of McArthur Diversion Canal, 2.1 air miles S of Rat Farm Boat Launch, 1.2 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  CHSC71705  Lycopus americanus Vernon H. Oswald 1998-8-30 9553 Shasta North of McArthur on the dike along Big Lake north of the boat launch ramp at Rat Ranch. 1005 Comment
  CHSC89660  Lycopus americanus R. Fischer; J. Marr 2004-8-13 351 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located near camp 7. On mdw edge, near water of Horr Pond. 1008 Comment
  CHSC71708  Lythrum salicaria Vernon H. Oswald 1998-8-30 9554 Shasta North of McArthur on the dike along Big Lake north of the boat launch ramp at Rat Ranch. 1005 Comment
  CHSC89659  Lythrum salicaria R. Fischer; J. Marr 2004-8-13 352 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located near camp 7 at water edge of Horr Pond. 1008 Comment
  UCR255888  Lythrum salicaria Greg de Nevers 2001-7-25 12622 Shasta Ahjumawi [Lava Springs] State Park 1011 Comment
  UCR54035  Lythrum salicaria Don Pendleton 1986-6-26 s.n. Shasta Lava Creek Lodge, Lava Creek Comment
  CHSC89640  Madia elegans subsp. elegans R. Fischer 2004-7-5 324 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off Lava Springs Trail near Ya-She campsites. Throughout mdw. 1011 Comment
  CHSC93285  Madia elegans subsp. elegans R. Fischer 2005-7-15 541 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected off the dryer soil and rocky fields around Ya-She Pond. 1011 Comment
  CHSC89677  Madia exigua R. Fischer; J. Marr 2004-7-7 405 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected off Spatter Cone Trail. 1043 Comment
  CHSC89666  Maianthemum stellatum R. Fischer; J. Marr 2004-9-27 343 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along northern shores Ya-She pond. In mdw. 1008 Comment
  CHSC92978  Marah fabacea var. agrestis R. Fischer 2005-4-17 573 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected from rocky outcrop on east facing slope overlooking lower Big Lake. 1028 Comment
  CHSC93022  Melica fugax R. Fischer 2005-5-22 611 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected from a grove of Oregon White Oak 400' north of Camp 7. 1016 Comment
  CHSC93093  Melica harfordii R. Fischer 2005-5-22 612 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc plateau. A few plants found growing the pine/juniper woodlands near camp 7. 1016 Comment
  CHSC89685  Mentha canadensis R. Fischer 2004-7-4 333 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located in mdw. at Crystal Springs. Near water edge. 1007 Comment
  CHSC96263  Mentha pulegium R. Fischer 2006-10-24 949 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected on the western edge of park on an old homesite known as the Green's Cabin, ca. 0.25 miles north of the old ranger station/homestead. 1010 Comment
  SEINET6630864 Image available Menyanthes trifoliata Herbert L. Mason, Malcolm A. Nobs, S. Galen Smith 1949-1 754 Shasta Fall River Mills, east side of town Comment
  CHSC93299  Microseris nutans R. Fischer 2005-5-20 585 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected on the Juniper Trail in the duff of pine/oak woodland. 1036 Comment
  CHSC93300  Microseris nutans R. Fischer 2005-5-20 586 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected on the lower Spatter Cone Trail. 1036 Comment
  CHSC96176  Microseris nutans R. Fischer 2006-5-14 894 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the Juniper Trail, ca. 0.5 miles ne of camp site 7. 1030 Comment
  CHSC93281  Microsteris gracilis R. Fischer 2005-4-17 636 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected in a crevice of volcanic boulders within a cinder cone field north of the upper end of Big Lake. 1028 Comment
  CHSC88761  Mimetanthe pilosa R. Fischer 2004-7-7 276 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located in the middle of Spatter Cone Trail roadbed. 1043 Comment
  CHSC93216  Mimetanthe pilosa R. Fischer 2005-7-16 605 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from the upper, west side, loop of Spatter Cone Trail. In road bed. 1054 Comment
  UC54648  Mimulus layneae H. M. Hall and E. B. Babcock June 1903 4229 Shasta Lava Beds of ne Shasta County Sierra Nevada Mountains 1219 Comment
  RSA536390  Mimulus pygmaeus Beth Corbin 1991-5-23 618 Lassen Adobe South Vernal Pool, 3 miles N of Timbered Crater, 14 miles N of Fall River Mills. 1098 Comment
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Jul 2 2013
  CHSC88754  Minuartia californica R. Fischer; J. Marr 2004-5-25 269 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located near Camp 7. 1016 Comment
  CHSC89766  Minuartia douglasii R. Fischer; J. Marr 2004-5-25 437 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off Spatter Cone Trail near camp 7. On road bed. 1016 Comment
  CHSC92971  Minuartia douglasii R. Fischer 2005-5-20 499 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Along Fishhawk Trail. 1021 Comment
  CHSC93294  Montia linearis R. Fischer 2005-4-15 572 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected near old Ranger Station on western end of park in oak/pine woodlands at meadow edge. 1013 Comment
  CHSC93021  Muhlenbergia asperifolia R. Fischer 2005-7-17 621 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected from a meadow along the western shore of Big Lake. 1010 Comment
  CHSC93328  Myosotis micrantha R. Fischer 2005-5-21 555 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected from main park road on the west shore, south end, of Big Lake. 1010 Comment
  CHSC96208  Myosurus apetalus var. borealis R. Fischer 2006-5-15 960 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from a vernal condition created by a bear wallow adjacent main park road between Horr Pond and campsite 7. 1010 Comment
  CHSC96204  Myosurus minimus R. Fischer 2006-5-13 964 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants located near the main gated entrance, western side, to park in an white oak shaded vernal depression between two lava flow outcrops. 1011 Comment
  CDA14152  Myriophyllum quitense G. F. Hrusa, T. Holmes 1997-6-18 13864 Shasta Fall River; Fall River upstream from Glenburn. Comment
  CHSC96178  Myriophyllum sibiricum R. Fischer 2006-7-22 892 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from the shallow waters of Horr Pond. 1007 Comment
  CHSC68920  Najas flexilis Vernon Oswald; Beth Corbin, Mike Dolan 1997-6-28 8655 Shasta North of McArthur on the arm of Big Lake leading to the boat launch ramp at the Rat Farm. 1005 Comment
  CHSC93277  Narcissus R. Fischer 2005-4-15 641 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from the weedy and long abandoned yard at the old Ranger Station on the western end of the park. 1013 Comment
  CHSC88330  Navarretia divaricata subsp. vividior R. Fischer; J. Marr 2004-5-24 213 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Spatter Cone Trail. 1051 Comment
  CHSC93000  Navarretia intertexta subsp. intertexta R. Fischer 2005-7-18 535 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Located in roadbed near Ya-She camp sites. 1013 Comment
  CHSC93034  Navarretia intertexta subsp. intertexta R. Fischer 2005-7-18 535 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Located in roadbed near Ya-She camp sites. 1013 Comment
  CHSC96289  Navarretia intertexta subsp. intertexta R. Fischer 2006-7-22 922 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from a moist grassy meadow, adjacent main park road, western end of park, and ca. 200 yds. east of Bowman ditch. 1011 Comment
  CHSC93105  Navarretia leucocephala subsp. minima R. Fischer 2005-5-23 512 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc plateau. Plants growing along Rat Farm Road on the transmontane meadow at edge of the old McArthur swamp. 1013 Comment
  CHSC93006  Nemophila pedunculata R. Fischer 2005-4-15 507 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Meadow near Ya-She camp. 1008 Comment
  CHSC89651  Nepeta cataria R. Fischer; J. Marr 2004-8-14 355 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located near camp 7 at water edge of Horr Pond. On mdw between Hor Pond and camp 7. Another population obs. near Ja-She camps and Ya-She pond. 1010 Comment
  CHSC89662  Nepeta cataria R. Fischer; J. Marr 2004-8-14 349 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located near camp 7. On mdw between Hor Pond and camp 7. Another population obs. near Ja-She camps and Ya-She pond. 1010 Comment
  CHSC93208  Nepeta cataria R. Fischer 2005-7-18 529 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected at east end of Horr Pond at water edge. 1007 Comment
  CDA33591  Nuphar polysepala Dale Woods, V. Popescu, D. Kratville 2010-6-3 Shasta South of Big Lake, Ahjumawi State Park, on bank opposite the diversion dam. 0 Comment
  CHSC89701  Oenothera elata subsp. hirsutissima R. Fischer; J. Marr 2004-8-15 381 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected on Lava Springs Trail at Crystal Springs. On mdws. 1010 Comment
  CHSC92996  Oenothera flava subsp. flava R. Fischer; J. Marr 2005-5-23 488 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. On meadow north of McArthur along Rat Farm Road. This mdw. area is near the old McArthur Swamp lands. 1013 Comment
  CHSC92997  Oenothera flava subsp. flava R. Fischer; J. Marr 2005-5-23 488 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. On meadow north of McArthur along Rat Farm Road. This mdw. area is near the old McArthur Swamp lands. 1013 Comment
  CHSC93333  Orobanche corymbosa R. Fischer 2005-7-16 606 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from the bottom portion of the Spatter Cone Trail loop. 1048 Comment
  CHSC96206  Packera eurycephala var. eurycephala R. Fischer 2006-5-13 962 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants located 200 yds. east of the upper nw entrance to the park along the lower trail fork. 1036 Comment
  UC53871  Packera eurycephala var. eurycephala H. M. Hall and E. B. Babcock June 1903 4232 Shasta Lava Beds, ne Shasta County Sierra Nevada Mountains 1219 Comment
  CHSC93035  Packera streptanthifolia R. Fischer 2005-7-17 525 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected at edge of meadow within a rocky outcrop along the western shore of Big Lake. 1008 Comment
  CHSC96196  Packera streptanthifolia R. Fischer 2006-5-14 968 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from the edge of an alkaline scald in a grassy meadow adjacent lower Big Lake, west shore, south end. 1008 Comment
  CHSC93272  Pectocarya pusilla R. Fischer 2005-4-20 648 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected off Juniper Trail 300 yds north-east of camp 7 in a grassy opening of YPF. 1021 Comment
  CHSC96290  Pectocarya pusilla R. Fischer 2006-5-14 921 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected on a moist, grassy slope adjacent to a conic depression pond near the lower end and western edge of Big Lake. 1008 Comment
  CHSC88327  Penstemon deustus var. pedicellatus R. Fischer; J. Marr 2004-5-24 210 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Spatter Cone Trail. 1051 Comment
  CHSC88334  Penstemon deustus var. pedicellatus R. Fischer; J. Marr 2004-5-24 217 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Spatter Cone Trail. 1018 Comment
  CHSC89681  Penstemon rydbergii var. oreocharis R. Fischer 2004-7-4 317 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off Lava Springs Trail between Crystal Springs and Ya-She. Collected from mdw area. 1008 Comment
  RSA702137  Penstemon rydbergii var. oreocharis R. Fischer 2004-7-4 317 Shasta Ahiumawi Lava Springs State Park, 3 miles N of Mc Arthur, on western edge Modoc Plateau. Located off Lava Springs Trail between Crystal and Ya-She. 1009 Comment
  CHSC93201  Pentagramma triangularis subsp. triangularis R. Fischer 2005-4-15 639 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected at the western edge of Ya-She Pond. 1010 Comment
  CAS-BOT-BC140473  Peraphyllum ramosissimum Greg de Nevers 2001-7-25 12615 Shasta Ahjumawi State Park 914 Comment
  CHSC88355  Peraphyllum ramosissimum R. Fischer; J. Marr 2004-5-28 239 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. Located along Lava Springs Trail just east of Crystal Springs. Meadow. 1010 Comment
  CHSC93219  Peraphyllum ramosissimum R. Fischer 2005-7-20 466 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Near Spatter Cone Trail, south-eastern portion of loop. 1051 Comment
  CHSC88787  Perideridia bolanderi subsp. bolanderi R. Fischer 2004-7-3 292 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. Located near Juniper Trail ne. Camp 7. 1036 Comment
  CHSC88788  Perideridia bolanderi subsp. bolanderi R. Fischer 2004-7-2 293 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. Located off Spatter Cone Trail. 1028 Comment
  CHSC93192  Perideridia bolanderi subsp. bolanderi R. Fischer 2005-7-16 523 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collection made on Juniper Trail between camp 7 and Fishhawk Tr. Junction. 1036 Comment
  CHSC93193  Perideridia bolanderi subsp. bolanderi R. Fischer 2005-7-17 596 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected on meadow edge on the west shore and south end of Big Lake. 1011 Comment
  CHSC93330  Perideridia kelloggii R. Fischer 2005-7-18 622 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected from a meadow along the main park road 400 yds east of old Ranger Station. 1010 Comment
  UCD35709  Perideridia oregana Beecher Crampton 1960-6-15 5630 Shasta Fall River valley, Eastman Lake area, 2.5 miles north of Glenburn. 1066 Comment
  CHSC89628  Persicaria amphibia R. Fischer; J. Marr 2004-8-15 375 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected on mdw near the Crystal Springs campground. 1008 Comment
  CHSC112472  Persicaria lapathifolia Lowell Ahart; John Dittes 2013-6-9 18792 Shasta On the bottom of a deep irrigation ditch, Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CHSC96192  Persicaria lapathifolia R. Fischer 2006-7-21 896 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from a wet grassy meadow near the western edge of Horr Pond. 1008 Comment
  JEPS120907  Persicaria lapathifolia Lowell Ahart, John Dittes 2013-6-9 18792 Shasta Hollenbeck Field, 950 feet E of Rat Farm Boat Launch, 3.4 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  RSA0118767  Persicaria lapathifolia Lowell A. Ahart, John Dittes 2013-6-9 18792 Shasta Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CHSC96171  Persicaria punctata R. Fischer 2006-7-21 880 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants growing in a wet grassy meadow near the western edge of Horr Pond. 1010 Comment
  CHSC88333  Phacelia heterophylla subsp. virgata R. Fischer; J. Marr 2004-5-24 216 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Spatter Cone Trail. 1036 Comment
  UC54519  Phacelia heterophylla subsp. virgata H. M. Hall and E. B. Babcock June, 1903 4233 Shasta lava beds of ne Shasta Co. Sierra Nevada Mountains 1219 Comment
  CHSC88324  Phacelia linearis R. Fischer; J. Marr 2004-5-24 207 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Spatter Cone Trail. 1036 Comment
  CHSC93275  Phacelia linearis R. Fischer 2005-4-20 644 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected from the western loop of Spatter Cone Trail off volcanic gravel and rocky soil. 1051 Comment
  CDA33437  Phalaris arundinacea Dale Woods 2010-7-1 Shasta Southwest of Horr Pond, northwest of Arthur, near Fall River diversion dam. 0 Comment
  CDA33446  Phalaris arundinacea Dale Woods 2010-7-1 Shasta North shore of Eastman Lake. Near Lava Creek Lodge. 0 Comment
  CHSC92980  Phalaris arundinacea R. Fischer 2005-7-17 461 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Along western shore of Big Lake in meadow. 1007 Comment
  CHSC93003  Phleum pratense R. Fischer 2005-7-17 521 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Along the west shore of Big Lake on meadow. 1010 Comment
  CHSC96205  Phlox caespitosa R. Fischer 2006-5-12 963 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants located ca. at mid-point between campsite 7 and Big Lake along Juniper Trail. 1188 Comment
  CHSC88806  Phoradendron densum R. Fischer 2004-7-3 311 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located w. shore of Big Lake near Juniper Trail junction. 1010 Comment
  CHSC89652  Phragmites australis R. Fischer; J. Marr 2004-9-27 341 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along northern shores Ya-She waterways. 1008 Comment
  CHSC88802  Piperia elongata R. Fischer 2004-7-3 307 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Juniper Trail near junction of Fishawk Trail. 1033 Comment
  CHSC89639  Piperia transversa R. Fischer 2004-7-4 334 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off Lava Spring Trail between Camp 7 and Crystal Springs near rock walled enclosure. 1010 Comment
  CHSC96172  Plagiobothrys leptocladus R. Fischer 2006-5-10 879 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the east side of Rat Farm Road (between the ALSSP and McArthur) ca. 1 mile south of the boat launch. Plants growing in vernal pool adjacent road. 1011 Comment
  CHSC96209  Plagiobothrys leptocladus R. Fischer 2006-5-15 959 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from a vernal condition created by a bear wallow adjacent main park road between Horr Pond and campsite 7. 1010 Comment
  CHSC93274  Plagiobothrys tenellus R. Fischer 2005-4-20 646 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Mature plants collected from the open grassy slopes about camp 7. 1013 Comment
  CHSC93276  Plagiobothrys tenellus R. Fischer 2005-4-15 642 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Young plants collected from the open grassy slopes about camp 7. 1013 Comment
  CDA33451  Platanthera leucostachys Dale Woods, V. Popescu, B. Villegas 2010-7-1 Shasta North shore of Eastman Lake. Near Lava Creek Lodge. 0 Comment
  CHSC93282  Platanthera leucostachys R. Fischer 2005-7-15 543 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected off a tiny island in the spring waters of an upper (western) Ya-She Pond. 1007 Comment
  CHSC96260  Plectritis brachystemon R. Fischer 2006-5-12 952 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the north edge of Big Lake, east side. A small population growing near the water's edge in a small grassy clearing shaded by volcanic boulders. 1007 Comment
  SEINET188386 Image available Poa canbyi C. L. Hitchcock 1940-5-27 6634 Shasta Near McArthur Comment
  CHSC96173  Poa cusickii subsp. cusickii R. Fischer 2006-5-10 878 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the east side of Rat Farm Road (between the ALSSP and McArthur) ca. 1 mile south of the boat launch and adjacent to a vernal pool complex. 1011 Comment
  CDA36865  Poa pratensis CDFA Staff 2001-6-6 s.n. Shasta Lava Creek Lodge, near Eastman Lake. 0 Comment
  CDA36982  Poa pratensis CDFA Staff 1999-6-1 s.n. Shasta Lava Creek Lodge, near Eastman Lake. 0 Comment
  CHSC93051  Poa pratensis subsp. pratensis R. Fischer 2005-5-22 498 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants growing in openings near juniper woodlands. Abundant about camp 7 and other disturbed areas. 1013 Comment
  UCD35710  Poa secunda subsp. juncifolia Beecher Crampton 1960-6-16 5631 Shasta Fall River Valley, Eastman Lake Area, 2.5 miles N of Glenburn, Belmonte's Ranch. Comment
  CHSC93288  Poa secunda subsp. secunda R. Fischer 2005-5-22 537 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected in vicinity of camp 7 in open pine/juniper woodland. 1014 Comment
  CHSC93289  Poa secunda subsp. secunda R. Fischer 2005-5-22 538 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected along main park road on the west shore of Big Lake. 1010 Comment
  CHSC89686  Polygala cornuta var. cornuta R. Fischer 2004-7-4 332 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off Lava Spring Trail between Camp 7 and Crystal Springs. 1010 Comment
  RSA702142  Polygala cornuta var. cornuta R. D. Fischer 2004-7-4 332 Shasta Ahjumawi Lava Springs State Park, 3 miles N of McArthur, on western edge Modoc Plateau. Located off Lava Spring Trail between Camp 7 and Crystal Springs 1011 Comment
  CHSC92981  Polygonum aviculare R. Fischer 2005-7-18 456 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Along main park road just east of old homestead at western edge of the park. Meadow. 1010 Comment
  CHSC93199  Polypogon monspeliensis R. Fischer 2005-7-18 463 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. On portion of the southern island ring of Horr Pond at water edge. 1007 Comment
  CHSC93200  Polypogon monspeliensis R. Fischer 2005-7-18 464 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Near water line on off shore levee 200 yds. south-west of Ya-She. 1007 Comment
  CHSC88807  Populus balsamifera subsp. trichocarpa R. Fischer 2004-7-3 312 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Grove from n. end of Big Lake. 2nd population found at western end of park 300-400 yds w. Ya-She campsites. 1008 Comment
  CHSC89697  Populus tremuloides R. Fischer; J. Marr 2004-8-15 369 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located N end Big Lake, E side. Near Ya-She pond. 1010 Comment
  CHSC96249  Potamogeton pectinatus R. Fischer 2006-7-22 863 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from the shallow waters of Horr Pond. 1007 Comment
  CHSC88755  Potentilla glandulosa subsp. glandulosa R. Fischer; J. Marr 2004-5-28 270 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Lava Springs Trail between Crystal Springs and Ya-She. 1013 Comment
  CHSC89696  Potentilla glandulosa subsp. glandulosa R. Fischer; J. Marr 2004-5-26 403 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along N shore of Big Lake, E side. 1010 Comment
  CDA36835  Potentilla gracilis CDFA Staff 1999-6-1 s.n. Shasta Lava Creek Lodge, near Eastman Lake. 0 Comment
  CHSC88756  Potentilla gracilis var. fastigiata R. Fischer; J. Marr 2004-5-28 271 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Lava Springs Trail near Crystal Springs. In mdw. depression. 1010 Comment
  CHSC93284  Potentilla gracilis var. fastigiata R. Fischer 2005-7-15 544 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected near water edge of Ya-She Pond. 1007 Comment
  CHSC93221  Potentilla gracilis var. gracilis R. Fischer 2005-7-15 609 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants growing next to camp 4 at Crystal Springs. 1008 Comment
  CHSC88805  Potentilla millefolia R. Fischer 2004-7-3 310 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located at n. end Big Lake, western shore. In mdw. at water edge. 1008 Comment
  CHSC88739  Potentilla millefolia var. klamathensis R. Fischer; J. Marr 2004-5-26 253 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located on mdw., at water edge, between Big Lake and Horr Pond. 1008 Comment
  CHSC112398  Potentilla rivalis Lowell Ahart; John Dittes 2013-6-9 18794 Shasta On the bottom of a deep irrigation ditch, Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS120913  Potentilla rivalis Lowell Ahart, John Dittes 2013-6-9 18794 Shasta Hollenbeck Field, 950 feet E of Rat Farm Boat Launch, 3.4 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  CHSC89645  Poteridium annuum R. Fischer 2004-7-3 315 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located at N end, W shore, Big Lake in mdw and roadbed of Lava Springs Trail. 1008 Comment
  CHSC93297  Prunella vulgaris var. lanceolata R. Fischer 2005-7-15 601 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected from the marsh edges around Ya-She Pond. 1008 Comment
  CHSC93218  Prunus emarginata R. Fischer 2005-7-20 467 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants growing along eastern loop of Spatter Cone Trail. 1054 Comment
  CHSC89647  Prunus subcordata R. Fischer; J. Marr 2004-8-14 359 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located at N end of Big Lake, E side. 1010 Comment
  CHSC89636  Prunus virginiana var. demissa R. Fischer 2004-7-5 338 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected a little S Ya-She pond. 1010 Comment
  CHSC89673  Prunus virginiana var. demissa R. Fischer; J. Marr 2004-8-14 360 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. At N end of Big Lake, E side. 1010 Comment
  CHSC89708  Prunus virginiana var. demissa R. Fischer; J. Marr 2004-5-24 389 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off Spatter Cone Trail. 1051 Comment
  UCD91499  Pseudoroegneria spicata Alan A. Beetle 1945-5-30 3982 Shasta northeastern part of county. 6 1/2 miles west of Fall River Mills, road to Burney -- Highway 299. Comment
  CHSC93107  Pseudoroegneria spicata subsp. spicata R. Fischer 2005-7-22 470 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc plateau. Plants growing along main park road between Crystal Springs and Ya-She. 1008 Comment
  CHSC89706  Psilocarphus brevissimus var. brevissimus R. Fischer; J. Marr 2004-5-22 391 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along rd. between McArthur and Rat Farm, E side of road. In vernal pool on mdw on edge of the old McArthur Swamp. 1011 Comment
  CHSC93092  Psilocarphus oregonus R. Fischer 2005-5-21 477 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants growing in the wet soil of the main park road-bed at the northern end of Big Lake. 1008 Comment
  CDA42960  Puccinellia lemmonii L. Ahart, John Dittes, Todd Sloat 2013-6-9 18788 Lassen On the south side of the road, on the south side of McArthur Diversion Canal, 0.32 mile east of Tule River, 2.8 air-miles northwest of McArthur, Fall River Valley, McArthur Swamp. Comment
  CHSC112789  Puccinellia lemmonii Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18788 Lassen Depression, on the south side of the road, on the south side of McArthur Diversion Canal, 0.32 mile east of Tule River, 2.8 air-miles northwest of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS120925  Puccinellia lemmonii Lowell Ahart, John Dittes, Todd Sloat 2013-6-9 18788 Lassen In a depression on the S side of the road, on the S side of the McArthur Diversion Canal, 0.32 miles E of the Tule River, 2.8 air miles NW of McArthur, Fall River Valley, McArthur Swamp. Comment
  RSA0042600  Puccinellia lemmonii Lowell A. Ahart, John Dittes, Todd Sloat 2013-6-9 18788 Lassen On the south side of the road, on the south side of McArthur Diversion Canal, 0.32 mile east of Tule River, 2.8 air-miles northwest of McArthur, Fall River Valley, McArthur Swamp. 1008 Comment
  CHSC88736  Purshia tridentata var. tridentata R. Fischer; J. Marr 2004-5-25 250 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located near the lower half of Spattercone Trail. 1028 Comment
  CHSC96186  Purshia tridentata var. tridentata R. Fischer 2006-5-11 901 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plant collected from open juniper woodlands near the southern end of the Spattercone Trail loop. 1036 Comment
  CHSC89641  Pycnanthemum californicum R. Fischer 2004-7-3 259 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located at N end, W shore, Big Lake at edge of mdw. Throughout park. 1008 Comment
  UCR255887  Pycnanthemum californicum Greg de Nevers 2001-7-25 12624 Shasta Ahjumawi [Lava Springs] State Park, at Ja She Spring 1012 Comment
  CHSC89678  Pyrrocoma lanceolata var. lanceolata R. Fischer; J. Marr 2004-8-14 384 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected on W shore of Big Lake. In mdw and roadbed. 1010 Comment
  CAS-BOT-BC86002  Quercus douglasii Greg de Nevers 2001-7-25 12620 Shasta Ahjumawi State Park 914 Comment
  CHSC96177  Ranunculus aquatilis R. Fischer 2006-7-24 893 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. From the shallow waters of Horr Pond, the southern edge on the lee side (pond side) of a barrier/levee island. 1007 Comment
  CHSC96288  Ranunculus aquatilis var. capillaceus R. Fischer 2006-7-22 923 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the moist meadow and water edge of Bowman ditch. South side of park road and west side of ditch. 1010 Comment
  CHSC88356  Ranunculus arvensis R. Fischer; J. Marr 2004-5-28 240 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. Located on Lava Springs Trail just below camp 7. 1008 Comment
  CHSC95141  Ranunculus californicus var. californicus R. D. Fischer 2005-4-14 861 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along Rat Farm Road ca. 2 miles north of McArthur on meadowland adjacent to the old McArthur Swamp. 1011 Comment
  CHSC93311  Ranunculus occidentalis R. Fischer 2005-4-15 566 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected north of camp 7. 1013 Comment
  CHSC88315  Ranunculus occidentalis var. occidentalis R. Fischer; J. Marr 2004-5-23 198 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located near Camp 7, just n. of Horr Pond. 1024 Comment
  CHSC88734  Ranunculus occidentalis var. occidentalis R. Fischer; J. Marr 2004-5-27 248 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located 400' n. Camp 7. 1013 Comment
  CHSC95204  Ranunculus occidentalis var. ultramontanus R. Fischer 2005-4-18 860 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along Rat Farm Road ca. 2 miles north of McArthur on meadowland adjacent to old McArthur Swamp. 1011 Comment
  CHSC96280  Ranunculus repens var. repens R. Fischer 2006-7-23 932 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected on a moist, grassy slope adjacent a conic depression pond near the lower and western edge of Big Lake. 1008 Comment
  CHSC112397  Ranunculus sardous Lowell Ahart; John Dittes 2013-6-9 18793 Shasta On the bottom of a deep irrigation ditch, Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS120909  Ranunculus sardous Lowell Ahart, John Dittes 2013-6-9 18793 Shasta Hollenbeck Field, 950 feet E of Rat Farm Boat Launch, 3.4 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  RSA0118765  Ranunculus sardous Lowell A. Ahart, John Dittes 2013-6-9 18793 Shasta Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CHSC96294  Ranunculus sceleratus var. sceleratus R. Fischer 2006-7-20 911 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected off east side of Rat Farm Road ca. 1 mile north of McArthur. Plants growing in a drainage swell on a sagebrush/Artemisia transmontane meadow. 1011 Comment
  CHSC93019  Ranunculus testiculatus R. Fischer 2005-4-17 580 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. In road bed of main park road along west side of Big Lake. 1010 Comment
  UC64243  Rhamnus rubra H. M. Hall and E. B. Babcock Jun 1903 4228 Shasta ne Shasta County Sierra Nevada Mountains 1219 Comment
  CHSC88804  Ribes cereum var. cereum R. Fischer 2004-7-3 309 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located off Spatter Cone Trail. 1054 Comment
  CHSC96298  Ribes inerme var. klamathense R. Fischer 2006-5-12 907 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the western shore, north end, of Big Lake at a spring outlet. 1007 Comment
  CHSC88354  Ribes roezlii var. roezlii R. Fischer; J. Marr 2004-5-28 238 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. Located along Lava Springs Trail just east of Crystal Springs. 1010 Comment
  CHSC88343  Ribes velutinum R. Fischer; J. Marr 2004-5-24 226 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. Located along Spatter Cone Trail. 1028 Comment
  CHSC88746  Rigiopappus leptocladus R. Fischer; J. Marr 2004-5-23 261 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located between Horr Pond and Camp 7. 1008 Comment
  CHSC92969  Rigiopappus leptocladus R. Fischer 2005-5-23 513 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Along Rat Farm Road on the meadow at edge of the old McArthur Swamp. 1013 Comment
  CHSC93273  Rigiopappus leptocladus R. Fischer 2005-4-20 647 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected off Juniper Trail 300 yds north-east of camp 7 in YPF. 1021 Comment
  CHSC89672  Rorippa palustris var. hispida R. Fischer; J. Marr 2004-5-26 393 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along W shore of Big Lake. Near water edge. 1008 Comment
  CHSC88748  Rosa R. Fischer; J. Marr 2004-5-27 263 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located off Lava Springs Trail between Horr Pond and Crystal Springs. 1008 Comment
  CHSC92982  Rumex acetosella R. Fischer 2005-7-18 457 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Along main park road, between Ya-She camp and the old homestead, on the western border of the park. 1010 Comment
  CDA33445  Rumex crispus Dale Woods 2010-7-1 Shasta Southwest of Horr Pond, northwest of Arthur, near Fall River diversion dam. 0 Comment
  CHSC89710  Rumex fueginus R. Fischer; J. Marr 2004-8-15 387 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected on water edge at Crystal Springs. 1008 Comment
  CHSC93306  Rumex fueginus R. Fischer 2005-7-18 549 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected from mud bar on an off shore levee near western edge of Horr Pond. 1007 Comment
  CHSC93335  Rumex fueginus R. Fischer 2005-7-18 598 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected from a meadow east of the Bowman drainage ditch and west of the old Ranger Station on the western edge of the park. 1011 Comment
  CHSC89716  Rumex salicifolius var. denticulatus R. Fischer; J. Marr 2004-5-28 398 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along Lava Springs Trail near Crystal Springs. In mdw. 1010 Comment
  CHSC88760  Rumex salicifolius var. salicifolius R. Fischer 2004-7-5 275 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Lava Springs Trail between Crystal Springs and old Ranger Station. In mdw. 1008 Comment
  CHSC93004  Rumex salicifolius var. salicifolius R. Fischer 2005-7-15 602 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected along main park road east of Crystal Springs at a marshy meadow. 1008 Comment
  CHSC94040  Salix lasiolepis var. lasiolepis R. Fischer 2005-4-19 705 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Tree growing near edge of main park road east of Crystal Springs in the riparian cover along water edge. 1010 Comment
  CHSC96252  Salix lasiolepis var. lasiolepis R. Fischer 2006-5-12 873 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the water edge of Big Lake, the north end and east side. 1007 Comment
  CHSC96253  Salix lucida subsp. lasiandra R. Fischer 2006-5-12 972 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the water edge of Big Lake, the north end and east side. 1007 Comment
  CHSC89780  Salsola tragus R. Fischer; J. Marr 2004-8-12 431 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off road between McArthur and Rat Farm, E side. On pastureland, part of the old McArthur Swamp. 1011 Comment
  CHSC96266  Schoenoplectus pungens R. Fischer 2006-10-23 946 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected on the mud flat, due to drydown, of a conic depression pond near the lower and western edge of Big Lake. 1008 Comment
  CDA37187  Scirpus acutus var. occidentalis CDFA Staff 2004-6-24 s.n. Shasta At a diversion dam, near Big lake, northwest of McArthur. 0 Comment
  CHSC96278  Scirpus acutus var. occidentalis R. Fischer 2006-7-23 934 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the shore line of Big Lake near the southern end and western side. 1008 Comment
  CHSC93279  Scleranthus annuus subsp. annuus R. Fischer 2005-4-15 640 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected from the gravelly and thinly grassy main park road bed ca. 400 ft east of the old Ranger Station at the western end of the park. 1013 Comment
  CHSC93217  Scrophularia lanceolata R. Fischer 2005-4-17 581 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from out crop on an east facing hillside opening above the mouth of Big Lake. 1033 Comment
  CHSC88336  Scutellaria antirrhinoides R. Fischer; J. Marr 2004-5-24 219 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Spatter Cone Trail. 1027 Comment
  CHSC93286  Scutellaria antirrhinoides R. Fischer 2005-7-15 542 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected at edge of woodland slope near western edge of Ya-She Pond, YPF. 1011 Comment
  CHSC89689  Scutellaria galericulata R. Fischer; J. Marr 2004-8-15 368 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located N end Big Lake. On mdw near lake. 1010 Comment
  CHSC96287  Scutellaria galericulata R. Fischer 2006-7-22 924 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected on the western end of park near Bowman ditch, north side of park road, in 6 inches of flooded grassy meadow. 1010 Comment
  HSC97000  Scutellaria galericulata R. Fischer, J. Marr 2004-8-15 368 Shasta Ahjumawi Lava Springs State Park, 3 mi. N of McArthur, E edge of Modoc Plateau, N end Big Lake 1011 Comment
  JEPS111357  Scutellaria galericulata R. Fischer 2006-7-22 924 Shasta Ahjumawi Lava Springs State Park, 3 mi N of McArthur, on the W edge of the Modoc Plateau. Collected on the W end of park near Bowman ditch, N side of park road. 1010 Comment
  RSA702145  Scutellaria galericulata R fischer, Jenny Marr 2004-8-15 368 Shasta Ahiumawi Lava Springs State Park, 3 miles N of McArthur, on western edge Modoc Plateau. Located N end Big Lake. 1011 Comment
  UC54589  Scutellaria nana H. M. Hall and E. B. Babcock June, 1903 4223 Shasta Sierra Nevada Mountains, North-eastern Shasta County Sierra Nevada Mountains 1219 Comment
  CHSC88335  Senecio eurycephalus var. eurycephalus R. Fischer; J. Marr 2004-5-24 218 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Spatter Cone Trail. 1036 Comment
  CDA33358  Senecio hydrophilus Dale Woods 2010-7-1 Shasta Near juncture of Horr Pond and north shore of Eastman Lake. 0 Comment
  CHSC89661  Senecio hydrophilus R. Fischer; J. Marr 2004-8-13 350 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located near camp 7 near Horr Pond on mdw. 1008 Comment
  CHSC89665  Senecio hydrophilus R. Fischer; J. Marr 2004-9-27 342 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along northern shores Ya-She waterways. On mdws, near water, throughout the park. 1008 Comment
  CHSC93011  Senecio integerrimus var. exaltatus R. Fischer 2005-4-15 589 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected east of the old Ranger Station at the western edge of the park. 1018 Comment
  CHSC93012  Senecio integerrimus var. exaltatus R. Fischer 2005-5-21 588 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected off the rim of a conic depression pond on the west side of lower Big Lake. 1021 Comment
  CHSC96193  Senecio integerrimus var. exaltatus R. Fischer 2006-5-15 971 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected on a dry grassy slope just se of a conic depression pond near the lower end and western edge of Big Lake. 1011 Comment
  CHSC96296  Senecio integerrimus var. exaltatus R. Fischer 2006-5-13 909 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected at western end of park, near gated entrance, along park road. 1011 Comment
  CDA36864  Sidalcea asprella CDFA Staff 1999-6-1 s.n. Shasta Lava Creek Lodge, near Eastman Lake. 0 Comment
  CHSC88337  Sidalcea oregana subsp. oregana R. Fischer; J. Marr 2004-5-24 220 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Lava Springs Trail, just e. of Camp 7 and n. of Horr Pond. Just off meadow edge. 1010 Comment
  CHSC88347  Sidalcea oregana subsp. oregana R. Fischer; J. Marr 2004-5-22 230 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. SE of Ahjumawi LSSP, on access rd. to Rat Farm, n. of McArthur. Part of the old McArthur Swamp. 1010 Comment
  CHSC89656  Sidalcea oregana subsp. oregana R. Fischer 2004-7-5 320 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off Lava Springs Trail E of old Ranger Station in mdw. 1011 Comment
  CHSC88797  Sidalcea oregana subsp. spicata R. Fischer 2004-7-3 302 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located in mdw. at n. end of Big Lake, western shore. 1008 Comment
  CHSC89630  Sidalcea oregana subsp. spicata R. Fischer; J. Marr 2004-8-15 373 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along shoreline Ya-She pond. 1010 Comment
  CHSC88743  Sisymbrium altissimum R. Fischer; J. Marr 2004-5-25 257 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located in mdw. between Horr Pond and Camp 7. Near main park rd., throughout park. 1010 Comment
  CHSC88770  Sisymbrium altissimum R. Fischer 2004-7-3 285 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located in mdw. below Camp 7. 1010 Comment
  CHSC71728  Solanum dulcamara Vernon H. Oswald 1998-8-30 9555 Shasta North of McArthur on the dike along Big Lake north of the boat launch ramp at Rat Ranch. 1005 Comment
  CHSC88351  Solanum dulcamara R. Fischer; J. Marr 2004-5-25 235 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. At edge of water between Horr Pond and Big Lake. 1007 Comment
  CHSC89644  Solanum dulcamara R. Fischer 2004-7-3 316 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located on W shore, N end, of Big Lake. 1008 Comment
  CHSC89650  Solanum dulcamara R. Fischer; J. Marr 2004-8-14 356 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located near camp 7 at water edge of Horr Pond. 1008 Comment
  CHSC88307  Solanum parishii R. Fischer; J. Marr 2004-5-23 191 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Lava Springs Trail between Horr Pond and Crystal Springs. 1008 Comment
  CHSC88809  Solidago velutina subsp. californica R. Fischer 2004-7-3 314 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located at n. end Big Lake in mdw. 1008 Comment
  CHSC89670  Solidago velutina subsp. californica R. Fischer; J. Marr 2004-8-13 364 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located near camp 7. 1011 Comment
  CDA14155  Sparganium emersum subsp. emersum G. F. Hrusa, T. Holmes 1997-6-18 13868 Shasta Fall River; Occasional in colonies on saturated shoreline of Fall River upstream from Glenburn. Perennial. Comment
  CHSC96285  Sparganium eurycarpum subsp. eurycarpum R. Fischer 2006-7-22 925 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected on the western end of park in Bowman ditch, south side of park road, in 3 feet of water. 1010 Comment
  CHSC96286  Sparganium eurycarpum subsp. eurycarpum R. Fischer 2006-7-22 925 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected on the western end of park in Bowman ditch, south side of park road, in 3 feet of water. 1010 Comment
  CHSC88798  Spiraea douglasii R. Fischer 2004-7-3 303 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located on edge of mdw. at n. end of Big Lake, western shore. 1008 Comment
  CHSC88808  Stachys ajugoides var. rigida R. Fischer 2004-7-4 313 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located at n. end Big Lake, western shore. In mdw. 1008 Comment
  CHSC89687  Stellaria longifolia R. Fischer; J. Marr 2004-5-24 402 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along N shore of Big Lake, E side. In mdw near water edge. 1008 Comment
  CHSC89786  Stellaria longifolia R. Fischer; J. Marr 2004-5-24 402 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along N shore of Big Lake, E side. In mdw near water edge. 1008 Comment
  CHSC96271  Stellaria longifolia R. Fischer 2006-7-22 941 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected on the western end of park near Bowman ditch, south side of park road, in 6 inches of flooded grassy meadow. 1008 Comment
  RSA702143  Stellaria longifolia R. Fischer, Jenny Marr 2004-5-24 0402 Shasta Ahiumawi Lava Springs State Park. 3 miles N. of McArthur, on western edge Modoc Plateau. Collected along N shore of Big Lake, E side. 1009 Comment
  CHSC93326  Stellaria media R. Fischer 2005-5-21 631 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected from meadow edge near the eastern end of Horr Pond. 1007 Comment
  CHSC93302  Stephanomeria paniculata R. Fischer 2005-7-16 551 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected from upper east side of Spatter Cone Trail. 1054 Comment
  CHSC88320  Swertia albicaulis var. albicaulis R. Fischer; J. Marr 2004-5-22 203 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located near Camp 7, just n. of Horr Pond. 1024 Comment
  UC54563  Swertia albicaulis var. nitida H. M. Hall and E. B. Babcock Jun 1903 4241 Shasta Lava Beds, ne Shasta County Sierra Nevada Mountains 1219 Comment
  CHSC88759  Symphoricarpos albus var. laevigatus R. Fischer; J. Marr 2004-5-28 274 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Lava Springs Trail between Crystal Springs and Ya-She. 1013 Comment
  CHSC88766  Symphyotrichum ascendens R. Fischer 2004-7-6 281 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located between Camp 7 and Horr Pond. On slope below camp. 1010 Comment
  CHSC88791  Symphyotrichum ascendens R. Fischer 2004-7-2 296 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. In mdw., below Camp 7, as it climbs away from Horr Pond. 1010 Comment
  CHSC89694  Symphyotrichum ascendens R. Fischer; J. Marr 2004-8-14 362 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located on W shore, near mouth of Big Lake. In mdw roadbed of Lava Springs Trail. 1010 Comment
  CHSC89783  Symphyotrichum ascendens R. Fischer; J. Marr 2004-8-14 417 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Off Lava Springs Trail, near camp 7 and Horr Pond. On mdw. 1010 Comment
  CHSC89784  Symphyotrichum ascendens R. Fischer; J. Marr 2004-8-14 417 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Off Lava Springs Trail, near camp 7 and Horr Pond. On mdw. 1010 Comment
  CHSC89775  Symphyotrichum bracteolatum R. Fischer 2004-7-3 329 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off Lava Springs Trail, W shore of Big Lake. Also at Crystal Springs. 1008 Comment
  CHSC89794  Symphyotrichum bracteolatum R. Fischer; J. Marr 2004-8-14 415 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Off Lava Springs Trail, W shore Big Lake, S end. Mdw/roadbed. 1010 Comment
  CHSC89704  Taraxacum officinale R. Fischer; J. Marr 2004-8-15 378 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected near Lava Springs Trail at camp 5, Crystal Springs. 1010 Comment
  CHSC92966  Taraxacum officinale R. Fischer 2005-5-21 496 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Along Juniper Trail, just north of camp 7. 1021 Comment
  CHSC88789  Tetradymia canescens R. Fischer 2004-7-3 294 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located off Spatter Cone Trail. 1036 Comment
  CHSC88790  Tetradymia canescens R. Fischer 2004-7-2 295 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located off Spatter Cone Trail. 1051 Comment
  CHSC93016  Thelypodium R. Fischer; J. Marr 2004-5-26 584 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected at upper end of Big Lake. 1008 Comment
  CHSC93017  Thelypodium R. Fischer 2005-5-21 583 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected at upper end of Big Lake just outside meadow edge. 1008 Comment
  CHSC89634  Thlaspi arvense R. Fischer 2004-7-5 331 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located W of old Ranger Station at edge of mdw. 1011 Comment
  CHSC96292  Torilis arvensis subsp. purpurea R. Fischer 2006-7-21 913 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected on dry grassy meadow, adjacent main park road, between Horr Pond and campsite 7. 1010 Comment
  CHSC96273  Toxicoscordion paniculatum R. Fischer 2006-5-11 939 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plant collected in an open juniper/YPF woodland just south of the Spattercone Trail loop. 1036 Comment
  CHSC93314  Toxicoscordion venenosum var. venenosum R. Fischer 2005-4-16 569 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected in woodlands between camp 7 and Spatter Cone Trail. 1036 Comment
  CHSC93222  Trichostema simulatum R. Fischer 2005-7-18 459 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Along main park road, near the old homestead, on the western border of the park. Population near gated entrance to park. 1013 Comment
  CHSC89699  Trifolium fragiferum R. Fischer; J. Marr 2004-8-15 382 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected on Lava Springs Trail at Crystal Springs. 1010 Comment
  CHSC96190  Trifolium fragiferum R. Fischer 2006-7-21 898 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from the grassy roadbed of main park road just east of Crystal Springs. 1008 Comment
  CDA14156  Trifolium hybridum G. F. Hrusa, T. Holmes 1997-6-18 13870 Shasta Fall River; Fall River upstream from Glenburn, at Island Rd. put-in access. Comment
  CHSC112791  Trifolium hybridum Lowell Ahart; John Dittes 2013-6-9 18796 Shasta Along the northeast side of the fence, about 20 yards east of Rat Farm Boat Launch, 3.4 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CHSC89684  Trifolium hybridum R. Fischer 2004-7-5 323 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located on Lava Springs Trail near Ya-She campsites. At mdw. edge. Along same road various locations. 1011 Comment
  CHSC89692  Trifolium hybridum R. Fischer; J. Marr 2004-8-15 364 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located near Ya-She campsites in roadbed of Lava Springs Trail. 1010 Comment
  CHSC89693  Trifolium hybridum R. Fischer; J. Marr 2004-8-15 364 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located near Ya-She campsites in roadbed of Lava Springs Trail. 1010 Comment
  JEPS120914  Trifolium hybridum Lowell Ahart, John Dittes 2013-6-9 18796 Shasta Along the NE side of the fence, about 20 yards E of Rat Farm Boat Launch, 3.4 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  CHSC93319  Trifolium repens R. Fischer 2005-5-21 556 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected from road bed of main park road along the west shore, south end, of Big Lake. Along length of park road. 1010 Comment
  CHSC89642  Trifolium wormskioldii R. Fischer 2004-7-4 328 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located on Lava Springs Trail roadbed, at N end of Big Lake. Near mdw. edge of lake. Also on roadbed near Crystal Springs. 1008 Comment
  CHSC93336  Trifolium wormskioldii R. Fischer 2005-7-15 594 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected on the water edge of Ya-She Pond. 1007 Comment
  CHSC89765  Triglochin concinna var. debilis R. Fischer; J. Marr 2004-8-14 433 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off Lava Springs Trail, western shore Big Lake. 1008 Comment
  CHSC93031  Triglochin concinna var. debilis R. Fischer 2005-7-17 532 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Found in a shallow sink within a meadow along the west shore of Big Lake. 1007 Comment
  CHSC89679  Triglochin maritima R. Fischer; J. Marr 2004-9-25 345 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected E Crystal Springs on mdw near water edge. 1008 Comment
  CHSC89680  Triglochin maritima R. Fischer; J. Marr 2004-9-25 345 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected E Crystal Springs on mdw near water edge. 1008 Comment
  CHSC89764  Triglochin maritima R. Fischer; J. Marr 2004-8-14 432 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off Lava Springs Trail, western shore Big Lake. 1008 Comment
  CHSC92998  Ventenata dubia R. Fischer 2005-7-17 493 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. In small meadow opening along Juniper Trail. 1036 Comment
  CHSC96202  Ventenata dubia R. Fischer 2006-7-23 916 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Grasses collected off Fishhawk Trail, on the little used road-bed, in a dry meadow of an opening in a mixed juniper/oak/YPF woodland. North of Horr Pond. 1027 Comment
  CHSC89709  Verbascum blattaria R. Fischer; J. Marr 2004-5-28 388 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected near Ya-She pond. 1010 Comment
  CHSC71729  Verbena hastata Vernon H. Oswald 1998-8-30 9556 Shasta North of McArthur on the dike along Big Lake north of the boat launch ramp at Rat Ranch. 1005 Comment
  CHSC88799  Verbena hastata R. Fischer 2004-7-4 304 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located in mdw. at n. end of Big Lake, western shore. 1008 Comment
  CHSC96293  Veronica anagallis-aquatica R. Fischer 2006-7-21 912 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected at edge of Horr Pond near campsite 7. 1007 Comment
  CHSC88740  Veronica arvensis R. Fischer; J. Marr 2004-5-25 254 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located at water edge along Horr Pond, near Camp 7. 1008 Comment
  CHSC93307  Veronica arvensis R. Fischer 2005-4-18 562 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected near Crystal Springs on a road bed. 1008 Comment
  CHSC112473  Veronica catenata Lowell Ahart; John Dittes 2013-6-9 18791 Shasta On the bottom of a deep irrigation ditch, Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CHSC96182  Veronica catenata R. Fischer 2006-7-23 888 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the grassy shore line of Big Lake. 1008 Comment
  CHSC96183  Veronica catenata R. Fischer 2006-7-23 887 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the grassy shore line of a conic depression pond near the lower and western edge of Big Lake. 1008 Comment
  JEPS120908  Veronica catenata Lowell Ahart, John Dittes 2013-6-9 18791 Shasta Hollenbeck Field, 950 feet E of Rat Farm Boat Launch, 3.4 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  RSA0118766  Veronica catenata Lowell A. Ahart, John Dittes 2013-6-9 18791 Shasta Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CHSC88309  Vicia americana var. americana R. Fischer; J. Marr 2004-5-23 193 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Lava Springs Trail. On the western slope above the southern end of Big Lake. 1010 Comment
  CHSC88352  Vicia americana var. americana R. Fischer; J. Marr 2004-5-28 236 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. Growing along Lava Springs Trail just east of Crystal Springs. 1008 Comment
  CHSC92968  Viola beckwithii R. Fischer 2005-4-15 504 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. About camp 7. 1013 Comment
  CHSC93291  Viola nephrophylla R. Fischer 2005-4-17 575 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected on west side of Big Lake on a marshy meadow at water edge, approximately at mid-lake point. 1007 Comment
  CHSC96261  Viola praemorsa subsp. linguifolia R. Fischer 2006-5-11 951 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along Spattercone Trail, a brushy woodland of volcanic rocks and thin soil. 1051 Comment
  CHSC96274  Viola praemorsa subsp. linguifolia R. Fischer 2006-5-11 938 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plant collected at campsite 7 (Horr Pond) in an open mixed woodland of juniper and YPF. 1011 Comment
  CHSC93099  Viola purpurea R. Fischer 2005-4-17 576 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc plateau. Plants collected on the northwest side of Big Lake on edge of oak woods and rabbitbrush. 1010 Comment
  CHSC88325  Viola purpurea subsp. purpurea R. Fischer; J. Marr 2004-5-24 208 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Spatter Cone Trail. 1036 Comment
  CHSC96275  Viola purpurea subsp. purpurea R. Fischer 2006-5-11 937 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the western loop of Spattercone Trail. 1008 Comment
  CHSC88323  Viola purpurea subsp. quercetorum R. Fischer; J. Marr 2004-5-24 206 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Spatter Cone Trail. 1036 Comment
  CHSC93055  Viola purpurea subsp. quercetorum R. Fischer 2005-4-17 638 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from under Oregon White Oak and juniper near the meadows around camp 9. 1008 Comment
  CHSC2038  Viola sheltonii P. Delaplane 1965-4-3 34 Shasta Squaw Creek area of the Harry Horr Ranch. Ca. 5 mi. ne of Glenburn. 121 Comment
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May 7 2007
  CHSC92967  Viola sheltonii R. Fischer 2005-4-15 503 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. About camp 7. 1013 Comment
  CHSC93312  Viola sheltonii R. Fischer 2005-4-16 567 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected north of camp 7. 1016 Comment
  CHSC93317  Vulpia bromoides R. Fischer 2005-5-20 587 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Comment
  CHSC93014  Vulpia microstachys var. microstachys R. Fischer 2005-5-22 617 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected about camp 7. 1013 Comment
  CHSC93015  Vulpia microstachys var. microstachys R. Fischer 2005-5-22 618 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected along the road edges of the main park road between Horr Pond and Crystal Springs. 1008 Comment
  CHSC93013  Vulpia microstachys var. pauciflora R. Fischer 2005-5-22 619 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected about camp 7. 1013 Comment
  CHSC93204  Vulpia myuros var. hirsuta R. Fischer 2005-5-22 616 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. 1008 Comment
  CHSC96188  Wyethia angustifolia R. Fischer 2006-7-21 900 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from mixed brushy woodlands (western juniper, Rhus trilobata, YPF) between Horr Pond and Crystal Springs. 1013 Comment
  CHSC89705  Wyethia mollis R. Fischer; J. Marr 2004-5-22 377 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along rd. between McArthur and Rat Farm. Mdw on edge of the old McArthur Swamp. 1013 Comment
  CHSC71690  Xanthium spinosum Vernon H. Oswald 1998-8-30 9557 Shasta Dirt road heading north of McArthur to the boat ramp on Big Lake. Roadside. 1005 Comment
  CHSC89720  Xanthium spinosum R. Fischer; J. Marr 2004-8-12 353 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Along rd. between McArthur and Rat Farm. Old McArthur Swamp. 1011 Comment
  CHSC93198  Yabea microcarpa R. Fischer 2005-5-20 479 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Along Fishhawk Trail. Collection made at western end of trail, and north of camp 7. 1021 Comment
  CHSC93214  Yabea microcarpa R. Fischer 2005-7-15 610 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. In the road edges of the main park between Horr Pond and Crystal Springs. 1008 Comment
  CHSC96197  Yabea microcarpa R. Fischer 2006-5-14 967 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from an open juniper/brush woodland on the nw slope above middle Big Lake. 1011 Comment
  CDA14154  Zannichellia palustris G. F. Hrusa, T. Holmes 1997-6-18 13867 Shasta Fall River; Common aquatic in large colonies where water is relatively deep, bottom sediment shallow, and flow rate low. Fall River upstream from Glenburn. Comment



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