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Specimen ID
Determination *
Collector
Collection Date
Collection Number
County
Locality
Elevation in meters
Feedback
CAS-BOT-BC123397
Isoetes howellii
Townsend Stith Brandegee
s.n.
Marin
Olema
Comment
CAS-BOT-BC173547
Isoetes howellii
Peter Rubtzoff; Edward Lee
1974-5-11
7385
Sonoma
Todd Road, 1.4 miles from Highway 116 and 0.6 miles from Llano Road.
Comment
CAS-BOT-BC278749
Isoetes howellii
Ayzik Solomeshch; C. Caria; R. Macdonald; S. Talley
2009-4-27
s.n.
San Diego
Cleveland National Forest. Laguna Campground, Mount Laguna. About 14 miles SE of San Diego County Road S1 (also called Sunrise Hwy) from intersection with Hwy 79
1670
Comment
CAS-BOT-BC376227
Isoetes howellii
Greg de Nevers
1992-6-16
10163
Sonoma
Pepperwood Ranch Natural Preserve. 3450 Franz Valley Road. In Weimar Pond
304
Comment
CAS-BOT-BC531465
Isoetes howellii
A. Williams; M. C. O'Connor; R. Truitt; A. Young; R. Brostrom
2015-6-12
15810
Marin
Mount Tamalpais. Marin Municipal Water District lands: alongside Alpine Lake
Comment
CAS-BOT-BC57721
Isoetes howellii
Gordon H. True
1968-5-2
4205
Mendocino
2 miles north of Point Arena between Coast Highway and beach
15
Comment
CAS-BOT-BC57723
Isoetes howellii
S. B. Parish; W. F. Parish
1882-8-1
1440
San Bernardino
Bear Valley, San Bernardino Mts.
Comment
CAS-BOT-BC57724
Isoetes howellii
Philip A. Munz
1926-6-28
10538
San Bernardino
Bluff Lake, San Bernardino Mts.
2255
Comment
CAS-BOT-BC57725
Isoetes howellii
S. B. Parish; W. F. Parish
1882-8-1
1440
San Bernardino
Bear Valley, San Bernardino Mountains
Comment
CAS-BOT-BC57728
Isoetes howellii
W. R. Dudley
1910-5-26
s.n.
San Mateo
Coal Mine Ridge, near Black Mountain
Comment
CAS-BOT-BC57729
Isoetes howellii
W. R. Dudley
1910-5-26
s.n.
San Mateo
Coal Mine Ridge
Comment
CAS-BOT-BC57731
Isoetes howellii
J. I. McMurphy
1906-5-19
s.n.
San Mateo
Coal Mine Ridge
Comment
CAS-BOT-BC57734
Isoetes howellii
Greg de Nevers
1992-6-16
10165
Sonoma
Pepperwood Ranch Natural Preserve, 3450 Franz Valley Road
304
Comment
CAS-BOT-BC57738
Isoetes howellii
John Thomas Howell
1937-6-6
13015
Sonoma
Sebastopol
Comment
CAS-BOT-BC57740
Isoetes howellii
Henry M. Pollard
1959-5-11
s.n.
Ventura
Mirror Lake, Ojai Valley
Comment
CAS-BOT-BC57741
Isoetes howellii
Henry M. Pollard
1952-6-28
s.n.
Ventura
Mirror Lake, Ojai Valley
Comment
CAS-BOT-BC57742
Isoetes howellii
Henry M. Pollard
1947-3-16
s.n.
Ventura
Mirror Lake
Comment
CAS-BOT-BC57743
Isoetes howellii
Henry M. Pollard
1947-4-25
s.n.
Ventura
Mirror Lake
Comment
CAS-BOT-BC57744
Isoetes howellii
Henry M. Pollard
1947-4-7
s.n.
Ventura
Mirror Lake
Comment
CAS-BOT-BC69901
Isoetes howellii
Lowell Ahart
1980-4-19
2089
Butte
Peter Ahart Ranch, Honcut.
50
Comment
CAS-BOT-BC69902
Isoetes howellii
Lowell Ahart
1988-4-6
5957
Butte
E. of North Honcut Creek, on the Joie Osgood Ranch, about 1.5 mi. n. and 3 mi. e. of Honcut, about 12 mi. se. of
60
Comment
CAS-BOT-BC69903
Isoetes howellii
Lowell Ahart
1983-6-6
4031
Butte
Peter Ahart Ranch, about 2 mi. n. and 1/4 mi. e. of Honcut.
50
Comment
CAS-BOT-BC69904
Isoetes howellii
Alice Eastwood; John Thomas Howell
1938-5-18
5771
Lake
Near Adams Springs.
Comment
CAS-BOT-BC69907
Isoetes howellii
Doreen Smith
1994-4-1
s.n.
Marin
Hidden Lake, Mt. Burdell.
Comment
CAS-BOT-BC69908
Isoetes howellii
Catherine Best; Mary P. Wells
1983-7-14
s.n.
Marin
Hidden Lake, Mt. Burdell.
Comment
CAS-BOT-BC69909
Isoetes howellii
H. E. Parks
1925-9-18
s.n.
Marin
Lake Lagunitas.
Comment
CAS-BOT-BC69910
Isoetes howellii
H. E. Parks
1925-9-18
s.n.
Marin
Lake Lagunitas.
Comment
CAS-BOT-BC69911
Isoetes howellii
H. E. Parks
1925-9-18
s.n.
Marin
Lake Lagunitas.
Comment
CAS-BOT-BC69912
Isoetes howellii
H. E. Parks
1925-9-18
s.n.
Marin
Lake Lagunitas.
Comment
CAS-BOT-BC69914
Isoetes howellii
John Thomas Howell
1941-7-6
16360
Marin
Hidden lake, Mt. Tamalpais.
Comment
CAS-BOT-BC69930
Isoetes howellii
Alice Eastwood; John Thomas Howell
1934-4-21
1845
Tehama
5 mi. s. of Cottonwood.
Comment
CAS-BOT-BC69931
Isoetes howellii
Alice Eastwood; John Thomas Howell
1937-6-25
4944 A
Trinity
Preacher Meadow.
Comment
CAS-BOT-BC69933
Isoetes howellii
Malcom A. Nobs; S. Galen Smith
1949-8-18
1386
Plumas
Last Chance Marshes at n. end of Lake Almanor, just s. of Chester.
Comment
CAS-BOT-BC69938
Isoetes howellii
R. F. Hoover
1968-5-28
11127
Shasta
Clough Creek at Old Alturas Road.
Comment
CAS-BOT-BC69942
Isoetes howellii
Peter H. Raven
1958-4-30
12757
San Diego
5 mi. e. of Torrey Pines on road to Miramar.
Comment
CAS-BOT-BC69943
Isoetes howellii
Robert F. Thorne; Earl Lathrop
1969-5-12
37930
Riverside
Santa Rosa Plateau: large vernal marsh on s. end of Mesa de Colorado, Rancho California.
624
Comment
CAS-BOT-BC69944
Isoetes howellii
Robert F. Thorne; Earl Lathrop; P. Munz
1968-5-8
37568
Riverside
Santa Rosa Plateau: On Mesa de Colorado, Rancho California.
670
Comment
CAS-BOT-BC69945
Isoetes howellii
Clare B. Hardham
1957-5-1
1891
Monterey
Hog Canyon, about 19 mi. ne. of San Miguel.
Comment
CAS-BOT-BC69946
Isoetes howellii
E. B. Copeland
1903-5-30
3281
Butte
Chico.
Comment
CAS-BOT-BC69947
Isoetes howellii
E. B. Copeland
1903-5-30
3281
Butte
Chico.
Comment
CAS-BOT-BC69949
Isoetes howellii
Lowell Ahart
1975-4-7
s.n.
Butte
Peter Ahart Ranch, Honcut.
36
Comment
CDA11711
Isoetes howellii
G. F. Hrusa
1991-4-22
8344
Sacramento
Natoma Unit-Folsom Lake State Rec. Area; Nimbus Dam overlook. Between Hazel Ave. and Lake Natoma.
Comment
CHSC111157
Isoetes howellii
Lowell Ahart
2012-6-2
18151
Tehama
In a small pond or vernal pool, on the east side of Long Road, about 6.7 miles northeast of Dales and State Highway 36, northeast of Red Bluff.
326
Comment
CHSC112440
Isoetes howellii
Lowell Ahart
2013-5-22
18703
Butte
About 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast of Honcut.
54
Comment
CHSC117402
Isoetes howellii
Lowell Ahart
2016-5-30
20881
Butte
Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville.
31
Comment
CHSC117650
Isoetes howellii
Lowell Ahart
2016-8-30
21320
Plumas
About 100 yards west of the Pacific Crest Trail on Bunker Hill Ridge, about 1 1/2 miles (air) southeast of Pilot Peak.
2044
Comment
CHSC24424
Isoetes howellii
Lowell Ahart
1976-10-1
Sierra
Along Bunker Hill Ridge, 1 1/4 mi nw of Mt. Etna.
1828
Comment
CHSC28828
Isoetes howellii
J. D. Jokerst; T. B. Devine, D. Greenstein
1979-5-18
420
Butte
Top of North Table Mountain, ca 1.0 mi n of Cherokee Rd.
Comment
CHSC29767
Isoetes howellii
M. S. Taylor
1980-5-24
2738
Butte
Peter Ahart Ranch, Honcut.
50
Comment
CHSC31520
Isoetes howellii
L. Ahart
1978-4-21
1662
Butte
Peter Ahart Ranch, Honcut.
50
Comment
CHSC32078
Isoetes howellii
L. Ahart
1976-9-28
1210
Sierra
Ca. 1 1/4 mi nw of Mt. Etna, ca. 10 mi e of La Porte.
1828
Comment
CHSC32344
Isoetes howellii
James Jokerst
1980-5-10
653
Mendocino
Near Howard Lake.
Comment
CHSC39547
Isoetes howellii
Lowell Ahart
1983-6-6
4031
Butte
Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut.
50
Comment
CHSC40400
Isoetes howellii
Lowell Ahart
1985-5-5
4890
Sutter
Near the first gate to the Dean Ranch, about 1/4 mile north of Mallott Road, about 2 miles north-east of Sutter, Sutter Buttes.
35
Comment
CHSC4067
Isoetes howellii
J. Wheeler
1967-4-23
12
Tehama
On the W side of Paskenta Rd. about 0.2 mile south of the intersection of Paskenta Rd. and Live Oak Rd.
91
Comment
CHSC40819
Isoetes howellii
Pauleen Broyles
1982-5-21
641
Tehama
Ca 30 meters s of Lassen Road in w pasture. The Nature Conservancy Vina Plains Preserve.
66
Comment
CHSC41439
Isoetes howellii
Lowell Ahart
1986-5-4
5249
Sutter
Near the first gate to the Dean Ranch, about 1/2 mile north of the intersection of Mallott Road and Alf Road, about 2 miles north-east of Sutter, Sutter Buttes.
30
Comment
CHSC44462
Isoetes howellii
Lowell Ahart
1988-4-6
5957
Butte
East of North Honcut Creek, on the Joie Osgood Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville.
60
Comment
CHSC44627
Isoetes howellii
Vernon Oswald
1984-3-9
1093
Tehama
Old Calif. Hwy 99W at Sour Grass Creek 2.0 mi n of the Tehama-Glenn County line.
Comment
CHSC45022
Isoetes howellii
Pauleen Broyles
1988-4-6
1105
Tehama
On Singer Creek Ditch in Lassen Pasture. The Nature Conservancy Vina Plains Preserve.
Comment
CHSC46178
Isoetes howellii
Lowell Ahart
1975-4-7
746
Butte
Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville.
36
Comment
CHSC46179
Isoetes howellii
Lowell Ahart
1975-5-11
754
Butte
Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville.
36
Comment
CHSC46279
Isoetes howellii
Vernon H. Oswald
1989-5-30
3789
Butte
Sheep Camp Ditch and Vandergrift Lake on the w side of the n end of Cana-Pine Creek Rd.
54
Comment
CHSC53991
Isoetes howellii
Vernon H. Oswald; Lowell Ahart
1991-5-9
4571
Tehama
Paynes Creek Recreation Area located ca. 1.5 mi northeast of the Bend Bridge over the Sacramento River, ca. 6.5 miles north-northeast of Red Bluff.
112
Comment
CHSC57790
Isoetes howellii
Vernon H. Oswald
1992-4-21
4908
Tehama
Hogsback Rd. (Belle Mill Rd. or Forest Rd. 28N24) near Mud Spring, 9.7 mi (odometer) E of Hwy. 99, ca. 11 mi (air) E of Red Bluff.
316
Comment
CHSC57791
Isoetes howellii
Vernon H. Oswald; Lowell Ahart
1992-4-21
4921
Tehama
Finley Lake on Hogsback Rd. (Forest Rd. 28N24), ca. 5.5 mi (air) SE of Paynes Creek.
850
Comment
CHSC59069
Isoetes howellii
Vernon H. Oswald; L. Ahart, L. Gehrung, L. Hanson, T. Martin
1992-8-20
5171
Sierra
Duck Soup Pond, 1.6 mi (air) SSE of Pilot Pk., ca. 9 mi (air) Ne of La Porte.
2036
Comment
CHSC59161
Isoetes howellii
Vernon H. Oswald; Lowell Ahart
1992-9-15
5215
Lassen
Island Lake located N of Bonte Pk. And ca. 1.5 mi W of Juniper Lake campgrounds.
2164
Comment
CHSC60804
Isoetes howellii
Vernon H. Oswald
1993-6-28
5622
Lassen
N of Hwy. 44 along Rd. 33N47 at the NE end of Little Harvey Valley, between Champs Flat and Harvey Valley, E of Poison Lake.
1737
Comment
CHSC64591
Isoetes howellii
Vernon H. Oswald; Lowell Ahart
1995-4-17
6671
Tehama
Cascade Range Foothills. Dales Lake Ecological Reserve. W side of Manton Rd. (A6) ca. 1.5 mi n of Dales Station on Hwy. 36, ca. 14 mi ne of Red Bluff.
213
Comment
CHSC64934
Isoetes howellii
Vernon H. Oswald; Lowell Ahart
1995-7-12
7019
Tehama
W of Red Bluff and S of Platina on Forest Route 45 (Tedoc Mtn. Rd.), 6.3 mi S of Hwy. 36.
1158
Comment
CHSC65908
Isoetes howellii
Vernon H. Oswald; Lowell Ahart
1996-4-15
7377 .1
Tehama
Thomes Creek Ecological Reserve. CDFG parcel on the S side of Gyle Rd. NW of Corning, northwest side of Sacramento Valley.
99
Comment
CHSC65940
Isoetes howellii
Vernon H. Oswald; Lowell Ahart
1996-4-23
7412
Tehama
Cascade Range Foothills. Hog Lake Plateau. BLM parcel along Hwy. 36 NE of Red Bluff.
263
Comment
CHSC66711
Isoetes howellii
Vernon H. Oswald; Lowell Ahart
1996-8-1
8111
Lassen
Mountain Meadows Reservoir SW of Westwood. NE of Indian Ole Dam.
1539
Comment
CHSC69407
Isoetes howellii
Lowell Ahart
1997-8-28
7874
Sierra
West of the Pacific Crest Trail and Bunker Hill Ridge, about one mile west of the Bunker Hill Mine, about one mile southeast of Pilot Peak.
1828
Comment
CHSC71271
Isoetes howellii
Lowell Ahart
1998-7-1
8023
Butte
About 1/4 miles north of the lone oak tree, about 1/2 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville.
403
Comment
CHSC79088
Isoetes howellii
B. Castro; L. P. Janeway
2000-4-5
1061
Tehama
Vicinity of Orland, among 'hummocky' rolling hills of grazed annual grassland adjacent to Rice Creek.
112
Comment
CHSC79934
Isoetes howellii
B. Castro; L. P. Janeway
2000-5-11
1172
Tehama
Vicinity of Orland and Black Butte Lake.
88
Comment
CHSC81194
Isoetes howellii
J. Trizzino
2001-4-25
58
Butte
Oro-Chico Highway, 0.25 mi west of Neal Road, wet ditch on north side of road.
54
Comment
CHSC81195
Isoetes howellii
J. Trizzino
2001-4-17
31
Tehama
Hog Lake Plateau off Highway 36.
268
Comment
CHSC82704
Isoetes howellii
Lowell Ahart
2002-7-22
9917
Placer
On the south side of the small natural lake, on the east side of the paved road to Lake Valley Reservoir, about 1/4 mile east of Yuba Gap and Highway 80.
1773
Comment
CHSC84250
Isoetes howellii
Lowell Ahart
2003-5-28
10233
Butte
On the bottom of Hendricks ditch, about 1 3/4 miles west of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville.
271
Comment
CHSC84546
Isoetes howellii
John Dittes
2003-5-25
2003 -28
Placer
Sacramento Valley; approximately 3.3 air-miles south of Lincoln, 0.5 air-miles due east of intersection of State Highway 65 and 12-Bridges Exit. In bed of vernal pool.
39
Comment
CHSC87384
Isoetes howellii
Lowell Ahart
2004-4-29
10790
Tehama
In Dead Rabbit Lake, east of the Nomalaki Trail, about 3/4 mile northwest of Bowers Creek, about 1 1/2 miles northwest of Forest Road 23N69 (Mud Flat Road), about 7 miles (air) southwest of Paskenta.
571
Comment
CHSC92169
Isoetes howellii
Lowell Ahart; John Dittes
2005-9-19
12372
Plumas
In Taylor Lake, on the east side of Taylor Lake, about 6 miles (air) southwest of Antelope Lake.
2076
Comment
CHSC94929
Isoetes howellii
W. Gray; M. Brown
2005-3-16
34
Butte
West of Wildwood park, Chico.
85
Comment
GH309037
Isoetes howellii
J. P. Tracy
1935-5-25
13841
Unknown
Fort Seward
Comment
HSC894
Isoetes howellii
H. E. Parks, J. P. Tracy
1935-6-2
11252
Del Norte
Vicinity of Darlingtonia Camp, on the Smith River, 2 mi. E of Gasquet
122
Comment
IRVC15233
Isoetes howellii
Gordon A. Marsh
1977-5-25
s.n.
Riverside
Santa Rosa Plateau, Mesa de Burro. Peninsular Ranges, Santa Ana Mountains
Comment
IRVC17941
Isoetes howellii
Gordon A. Marsh, Karlin G. Marsh
1980-5-18
s.n.
Riverside
Santa Rosa Plateau; pool 1. Peninsular Ranges, Santa Ana Mountains
Comment
JEPS103966
Isoetes howellii
Jake Ruygt
1996-5-19
3708
Napa
West of Barnett Road near Burton Creek, (Peju Pr)Pope Valley.
201
Comment
JEPS104157
Isoetes howellii
Lowell Ahart
2003-5-28
10233
Butte
On the bottom of Hendricks ditch, ca 1 3/4 mi w of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville.
271
Comment
JEPS106165
Isoetes howellii
Lowell Ahart
2004-4-29
10790
Tehama
In Dead Rabbit Lake, east of the Nomalaki Trail, about 3/4 mile northwest of Bowers Creek, about 1 1/2 miles northwest of Forest Road 23N69 (Mud Flat Road), about 7 miles (air) southwest of Paskenta
571
Comment
JEPS107682
Isoetes howellii
Lowell Ahart, John Dittes
2005-9-19
12372
Plumas
In Taylor Lake, on the east side of Taylor Lake, about 6 miles (air) southwest of Antelope Lake
2076
Comment
JEPS116562
Isoetes howellii
Jake Ruygt
2005-4-30
4801
Napa
Big Ranch Road at El Centro Ave. Napa 7.5' Quad.
Comment
JEPS116563
Isoetes howellii
Jake Ruygt
1992-5-15
2962
Napa
West of vernal pool meadow, Wild Horse Valley Ranch. Mount George 7.5' Quad.
Comment
JEPS120930
Isoetes howellii
Lowell Ahart
2013-5-22
18703
Butte
About 2.5 miles SE of the Honcut Cemetery, about 3.25 air miles NE of Honcut.
Comment
JEPS127197
Isoetes howellii
Lowell Ahart
2016-5-30
20881
Butte
Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville.
Comment
JEPS127220
Isoetes howellii
Lowell Ahart
2016-8-30
21320
Plumas
About 100 yards west of the Pacific Crest Trail on Bunker Hill Ridge, about 1 1/2 miles (air) southeast of Pilot Peak.
Comment
JEPS129168
Isoetes howellii
Jake Ruygt
2015-5-2
6086 e
Napa
West of Buck Mountain near Nevada. Knoxville 7.5' Quad.
Comment
JEPS18119
Isoetes howellii
Rimo Bacigalupi with G. T. Robbins
1956-6-1
5693
Lake
1.4 mi. w. Lower Lake (e. end of Dry Lake)
457
Comment
JEPS20537
Isoetes howellii
Rimo Bacigalupi with S. Galen Smith and George Bacigalupi Jr.
1957-6-27
5971
Siskiyou
2 1/2 mi. n.w. Weed (s. tip of Shasta Valley, near headwaters of Shasta River); Shasta Valley
1005
Comment
JEPS25419
Isoetes howellii
Rimo Bacigalupi with G. T. Robbins
1959-4-23
7036
Shasta
ca. 2 mi. w. Bella Vista (along U.S. Hwy. 299, in drainage of Salmon Creek)
201
Comment
JEPS45467
Isoetes howellii
Perry Allen
1961-12-23
Stanislaus
vicinity of La Grange (shore of Dawson Lake just below steep hill on e. side); Dawson Lake
Comment
JEPS52323
Isoetes howellii
Wayne Roderick
April, 1965
Sonoma
e. Cotati (on Rivers Ranch, Sonoma Mts.); Sonoma Mts., Rivers Ranch
304
Comment
JEPS60154
Isoetes howellii
R. F. Hoover
1936-5-20
1143
Sutter
Pleasant Grove
Comment
JEPS67913
Isoetes howellii
L. R. Heckard and J. J. Thomas
1972-4-16
2896
San Mateo
sw of Upper Crystal Springs Reservoir (ca 1 1/2 mi s of Pulgas Water Temple, along Old Canada Rd (private))
121
Comment
JEPS79455
Isoetes howellii
Edward Lee with W. Joseph
1935-7-18
1583
Marin
Mt. Tamalpais, Hidden Lake (?)
Comment
JEPS79456
Isoetes howellii
Edward Lee with Annetta Carter
1936-7-4
2273
Santa Clara
on ridge from Mt. Day to junction of Smith and Santa Isabela creeks (Mt. Hamilton Range); Mt. Hamilton Range
Comment
JEPS79458
Isoetes howellii
Edward Lee with A. Carter, J. and N. Ewan
1936-5-9
2030
Sutter
ca. 5 mi. w. Live Oak (beginning of foothills on n.e. side of <Marrysville> Buttes)
30
Comment
JEPS88062
Isoetes howellii
Vernon H. Oswald and Lowell Ahart
1996-4-23
7412
Tehama
ne of Red Bluff (BLM parcel along Hwy 36, sw end of Hog Lake); Cascade Range Foothills, Hog Lake Plateau
263
Comment
JEPS88063
Isoetes howellii
Vernon H. Oswald and Lowell Ahart
1996-4-15
7377 .1
Tehama
nw Corning (CDFG parcel on s side of Gyle Rd, ca 0.6 mi e of lane); Sacramento Valley, Thomes Creek Ecological Reserve
99
Comment
JEPS89842
Isoetes howellii
Dean W. Taylor
1990-5-9
11686
Tehama
ca. 300 meters n. of creek along right-of-way electrical transmission lines (PG & E Pit-Vaca line) Stony Creek; Sacramento Valley, Black butte Dam 7 1/2 Quad., Stony Creek
112
Comment
JEPS94717
Isoetes howellii
Lowell Ahart
1998-7-1
8023
Butte
about 7 air mi n Oroville (vernal pool about 1/4 mi n of lone oak tree, about 1/2 mi n of the cow chute along Cherokke Rd.); North Table Mountain
403
Comment
JEPS94945
Isoetes howellii
Lowell Ahart
1997-8-28
7874
Sierra
small pond about 1 mi w Bunker Hill Mine (w of the Pacific Crest Trail and Bunker Hill Ridge, about 1 mi se of Pilot Peak)
1828
Comment
JEPS97375
Isoetes howellii
Vernon H. Oswald and Lowell Ahart
1995-4-17
6671
Tehama
14 mi NE of Red Bluff (W side of Manton Rd (A6) ca. 1.5 mi N of Dales Station on Hwy 36); Cascade Range Foothills, Dales Lake Ecological Reserve
213
Comment
JEPS97379
Isoetes howellii
Vernon H. Oswald and Lowell Ahart
1995-7-12
7019
Tehama
W of Red Bluff (S of Platina; Forest Rte 45 (Tedoc Mtn Rd) 6.3 mi S of Hwy 36); High North Coast Ranges
1158
Comment
OBI1054
Isoetes howellii
R. F. Hoover
1968-5-28
11127
Shasta
Clough Creek at Old Alturas Road
Comment
OBI1055
Isoetes howellii
R. F. Hoover
1968-5-28
11127
Shasta
Clough Creek at Old Alturas Road.
Comment
OBI1056
Isoetes howellii
Lawrence L. Kiefer
1963-5-18
529
Ventura
Ojai Valley, "Mirror Lake", south of airport, jnctn. of hgwys. 399 and 150, NW margin of lake
168
Comment
PGM4253
Isoetes howellii
Vern Yadon
1998-5-31
Monterey
Sierra de Salinas, Hastings Res Carmel Valley, Ranch NW of and adj to Hastings Res
Comment
POM17786
Isoetes howellii
F. W. Peirson
1923-3-28
3366
San Diego
near boulevard on mesa about 6 miles north of San Diego
121
Comment
POM230868
Isoetes howellii
F. F. Gander
1937-5-11
3806 .1
San Diego
2 Miles North of Poway Junc. US 395.
Comment
POM25501
Isoetes howellii
Alice Eastwood
1922-7-23
11508
Marin
Mt. Tamalpais, Rock Spring.
Comment
POM25515
Isoetes howellii
P. A. Munz
1922-8-5
6434
Marin
Mt Tamalpais, Rock Springs.
Comment
POM258890
Isoetes howellii
Alice Eastwood, J. T. Howell
1938-5-18
5771
Lake
Near Adams Springs.
Comment
POM5203
Isoetes howellii
E. B. Copeland
1903-5-30
3281
Butte
Chico.
Comment
POM9999
Isoetes howellii
H. H. Tracy
1918-08
680
San Bernardino
Switzers Meadows, brook leading into Little Bear Lake [Arrowhead Lake]. San Bernardino Mountains
Comment
RSA0118713
Isoetes howellii
Lowell Ahart
2013-5-22
18703
Butte
About 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast of Honcut.
54
Comment
RSA116773
Isoetes howellii
W. R. Dudley
1906-7-28
s.n.
San Mateo
Coal Mine Ridge, Black Mtn.
Comment
RSA125345
Isoetes howellii
P. H. Raven
1958-4-30
12757
San Diego
5.0 miles east of Torrey Pines on road to Miramar.
Comment
RSA128168
Isoetes howellii
Clare B. Hardham
1958-4-12
4228
San Luis Obispo
Cambria. The Santa Lucia Mtns.
Comment
RSA152291
Isoetes howellii
Joseph P. Tracy
1937-8-12
15650
Humboldt
Snow Camp.
1402
Comment
RSA192257
Isoetes howellii
E. W. Lathrop
1966-5-1
6253
Riverside
3 miles W of Murrieta
Comment
RSA199007
Isoetes howellii
R. F. Thorne, E. Lathrop, P. A. Munz
1968-5-8
37567
Riverside
Santa Rosa Plateau: on Mesa de Colorado, Rancho California
671
Comment
RSA199008
Isoetes howellii
R. F. Thorne, E. W. Lathrop, Ora M. Clark, S. Carlquist
1968-4-18
37420
Riverside
Santa Rosa Plateau: near roadside, Rancho California. Santa Ana Mountains
610
Comment
RSA199009
Isoetes howellii
R. F. Thorne, E. Lathrop, P. A. Munz
1968-5-8
37568
Riverside
Santa Rosa Plateau: on Mesa de Colorado, Rancho California
671
Comment
RSA211494
Isoetes howellii
William J. Ferlatte
1966-8-3
281
Siskiyou
Josephine Lake basin. Trinity Alps.
1677
Comment
RSA234045
Isoetes howellii
R. F. Thorne, E. Lathrop
1969-5-19
37974
Riverside
Santa Rosa Plateau: Rancho Caifornia, Mesa de Colorado
625
Comment
RSA234046
Isoetes howellii
R. F. Thorne, E. W. Lathrop
1969-5-12
37942
Riverside
Santa Rosa Plateau: Mesa de Colorado, Rancho California.
625
Comment
RSA234054
Isoetes howellii
R. F. Thorne, E. W. Lathrop
1969-5-12
37930
Riverside
Santa Rosa Plateau: Large vernal marsh on S end of Mesa de Colorado, Rancho California
625
Comment
RSA286232
Isoetes howellii
R. F. Thorne
1974-7-27
44980
Lake
Boggs Lake: N of Harrington Flat Road.
915
Comment
RSA286803
Isoetes howellii
R. F. Thorne
1974-5-23
44671
Riverside
Santa Ana Mountains, Santa Rosa Plateau, Rancho California: N edge of large vernal marsh, Mesa de Colorado
624
Comment
RSA336178
Isoetes howellii
R. F. Thorne, M. Z. Thorne, W. Wisura
1978-5-21
51966
Riverside
Santa Rosa Plateau: Mesa de Colorado
609
Comment
RSA356636
Isoetes howellii
R. F. Thorne, Earl Lathrop
1975-5-20
45542
Riverside
Santa Rosa Plateau: Rancho California, Mesa de Burro; Santa Ana Mountains
610
Comment
RSA357000
Isoetes howellii
R. F. Thorne
1973-5-23
43875
Riverside
Santa Rosa Plateau- Mesa de Colorado: stream N of mesa. Santa Ana Mountains
609
Comment
RSA357154
Isoetes howellii
Robert F. Thorne
1973-5-23
43852
Riverside
Santa Rosa Plateau: N side of Mesa de Colorado. Santa Ana Mountains
609
Comment
RSA430448
Isoetes howellii
Lyman Benson
1935-5-17
6597
Lake
West base of Mt. Konocti, Breen s Lake. Middle N Coast mtn range, Clear Lake watershed.
488
Comment
RSA43959
Isoetes howellii
Henry M. Pollard
1947-4-7
s.n.
Ventura
Mirror Lake
Comment
RSA545385
Isoetes howellii
Robert F. Thorne
1975-5-20
45542
Riverside
Santa Rosa Plateau: Rancho California, Mesa de Burro
610
Comment
RSA606519
Isoetes howellii
Jon E. Keeley
1985-4-18
7926
Riverside
Main pool near road, Mesa de Colorado, Santa Rosa Plateau. Santa Ana Mountains
675
Comment
RSA606520
Isoetes howellii
Jon E. Keeley
1978-4-16
7090
San Diego
Corner of Miramar Rd. and Carroll Rd.
125
Comment
RSA606521
Isoetes howellii
Jon E. Keeley
1978-4-15
7091
San Diego
West of Highway 163 on Kearney Villa Rd. (north end.)
100
Comment
RSA639130
Isoetes howellii
R. F. Thorne, Earl Lathrope, Oscar Clarke, S. Carlquist
1968-4-18
37460 A
Riverside
Santa Rosa Plateau: Mesa de Colorado, Rancho California..
609
Comment
RSA684553
Isoetes howellii
Henry M. Pollard
1947-4-7
s.n.
Ventura
Mirror Lake
Comment
RSA684554
Isoetes howellii
Christopher Davidson
1977-5-25
5665
Riverside
Mesa de Burro; Santa Rosa Plateau area of Santa Ana Mountains
701
Comment
RSA739596
Isoetes howellii
John Dittes
2003-5-25
2003 -28
Placer
Sacramento Valley; approximately 3.3 air-miles south of Lincoln, 0.5 air-miles due east of intersection of State Highway 65 and 12-Bridges Exit.
40
Comment
RSA757451
Isoetes howellii
R. F. Thorne, E. W. Lathrop, S. Beckstrom-Sternberg, B. Martin
1982-05
55204
Riverside
SW of Murrieta. Santa Rosa Plateau, Mesa de la Punta near S. edge of plateau, approached from De Luz road
730
Comment
RSA795514
Isoetes howellii
P. Reisentz
1979-4-22
s.n.
Ventura
Mirror Lake, 0.5 miles south of intersection of Highway 150 and Highway 33, 3 miles southwest of Ojai, 12 miles north of Ventura.
191
Comment
RSA796365
Isoetes howellii
Forrest Freund, J. Mark Porter
2013-3-20
125 .1
Monterey
Fort Ord National Monument (former Fort Ord), eastern Twin Ponds.
134
Comment
RSA796366
Isoetes howellii
Forrest Freund, J. Mark Porter
2013-3-20
124
Monterey
Fort Ord National Monument (former Fort Ord), Butterfly Valley.
146
Comment
RSA796367
Isoetes howellii
Forrest Freund, J. Mark Porter
2013-3-20
126
Monterey
Fort Ord National Monument (former Fort Ord), along Trail 17.
119
Comment
RSA796368
Isoetes howellii
Forrest Freund, J. Mark Porter
2013-3-20
127
Monterey
Fort Ord National Monument (former Fort Ord), Lower Machinegun Flats.
131
Comment
RSA796369
Isoetes howellii
Forrest Freund, J. Mark Porter
2013-3-20
123 .2
Monterey
Fort Ord National Monument (former Fort Ord), E of California Hwy 1 (Cabrillo Hwy), along Trail 17 (between Addington Road and Hennekens Ranch Road).
131
Comment
RSA796370
Isoetes howellii
Forrest Freund, J. Mark Porter
2013-3-20
122 .2
Monterey
Fort Ord National Monument (former Fort Ord), E of California Hwy 1 (Cabrillo Hwy), along Trail 20 (between Addington Road and Hennekens Ranch Road).
118
Comment
RSA796371
Isoetes howellii
Forrest Freund, J. Mark Porter
2013-3-20
128
Monterey
Fort Ord National Monument (former Fort Ord), Mary s Valley.
131
Comment
RSA84315
Isoetes howellii
F. W. Peirson
1930-8-14
9214
Tuolumne
Tuolumne Meadows. Sierra Nevada.
2591
Comment
RSA84317
Isoetes howellii
F. W. Peirson
1923-3-28
3366
San Diego
near boulevard on mesa about 6 miles north of San Diego
121
Comment
SBBG107813
Isoetes howellii
C. B. Hardham
1957-5-12
1943
San Luis Obispo
near Green's Lake
Comment
SBBG108392
Isoetes howellii
C. B. Hardham
1957-5-12
1944
San Luis Obispo
Green's Lake
Comment
SBBG112262
Isoetes howellii
D. H. Wilken
1999-4-28
15675
Monterey
Santa Lucia Memorial Park, ca. 0.4 km ENE of Indian Ranger Station, ca. 2.6 km NW of The Indians
640
Comment
SBBG119787
Isoetes howellii
L. Ahart
2004-4-29
10790
Tehama
Dead Rabbit Lake, E of Nomalaki Trail, ca. 0.75 mi NW of Bowers Crk, ca. 1.5 mi NW of USFS Rd 23N69 (Mud Flat Rd), ca. 7 air mi SW of Paskenta
571
Comment
SBBG14522
Isoetes howellii
C. B. Hardham
1958-5-12
1943
San Luis Obispo
Green's Lake, crest N of Cypress Mtn
Comment
SBBG16075
Isoetes howellii
L. L. Kiefer
1963-5-18
529
Ventura
Mirror Lake, S of airport, jct of Hwys 150 and 399
200
Comment
SBBG27190
Isoetes howellii
A. Eastwood, J. T. Howell
1938-5-18
5771
Lake
near Adams Springs
Comment
SBBG41912
Isoetes howellii
H. M. Pollard
1959-5-11
Ventura
Mirror Lake
200
Comment
SBBG92732
Isoetes howellii
R. F. Thorne
1973-5-23
43852
Riverside
Santa Rosa Plateau, N side of Mesa de Colorado
609
Comment
SD111888
Isoetes howellii
Barbara Ertter, Jeff Strachan, Lowell Ahart
1980-5-7
3288
Butte
Peter Ahart Ranch, ca 2.5 miles north northeast of Honcut between Oroville and Marysville, dry ditches in oatfield near pond
29
Comment
SD112459
Isoetes howellii
Darley F. Howe
1941-5-11
1308
San Diego
Miramar
Comment
SD114727
Isoetes howellii
Henk van der Werff
1982-3-28
4453
San Diego
Kearney Mesa near San Diego
Comment
SD114739
Isoetes howellii
Henk van der Werff
1982-4-16
4462
San Diego
Pine Valley, Corte Madera Ranch In mud of vernal pool
1200
Comment
SD115095
Isoetes howellii
Wayne P. Armstrong
1983-5-1
San Diego
Along Kearney Villa Road, one mile north of Clairemont Mesa Boulevard
120
Comment
SD13016
Isoetes howellii
F. M. Cota
Apr 1935
San Diego
Camp Kearny Mesa
Comment
SD132950
Isoetes howellii
Timothy Cass
1979-4-30
65
San Diego
Vernal pool W of Miramar Land Fill, Dump ponds (#'s 1-6)
Comment
SD132951
Isoetes howellii
Timothy Cass
1979-4-27
37
San Diego
Camp Elliot, 'Beauchamp's Bend #1
Comment
SD14606
Isoetes howellii
Frank F. Gander
1936-4-15
1386 B
San Diego
Near Ramona
Comment
SD17374
Isoetes howellii
Frank F. Gander
1937-5-11
3710
San Diego
Near county line on US 395
Comment
SD17470
Isoetes howellii
Frank F. Gander
1937-5-11
3806 3806 1
San Diego
2 miles north of Poway Junction on US 395
Comment
SD17472
Isoetes howellii
Frank F. Gander
1937-5-11
3806 3
San Diego
2 miles north of Poway Junction, US 395
Comment
SD204904
Isoetes howellii
R. F. Thorne, E. W. Lathrop, et al.
1982-6-5
55204
Riverside
Santa Ana Mountains region: SW of Murrieta. Santa Rosa Plateau, Mesa de la Punta near south edge of plateau, approached from De Luz road.
579
Comment
SD207443
Isoetes howellii
Gena Calcarone, Cheri Kim, Fred Sproul
2005-4-13
179
San Diego
Ramona Grassland Preserve, 200 yds NE of junction Highland Valley Rd and Rangeland Rd., in Cagney swale.
410
Comment
SD38490
Isoetes howellii
Edith A. Purer
1937-4-16
7232 A
San Diego
Camp Kearney Mesa
Comment
SD38491
Isoetes howellii
Edith A. Purer
1937-3-2
7111
San Diego
Camp Kearney Mesa
Comment
SD68955
Isoetes howellii
Robert F. Thorne, E. Lathrop, P. Munz
1968-5-8
37568
Riverside
Santa Rosa Plateau, vernal marsh on Mesa de Colorado
669
Comment
SD90574
Isoetes howellii
Robert F. Thorne, Earl Lathrop
1969-5-12
37930
Riverside
Santa Rosa Plateau, Rancho California, large vernal marsh on south end of Mesa de Colorado
625
Comment
SDSU1990
Isoetes howellii
F. M. Cota
1932-2-1
213
San Diego
Camp Kearny.
Comment
SDSU20309
Isoetes howellii
Mark Olson
1993-6-18
422
Santa Barbara
Burton Mesa Project Area: W of Vandenberg Village, nearly a mile SW of Cabrillo High School, S of Hwy 1. Shown as intermittent pond on Lompoc quadrangle.
Comment
SEINET183939
Isoetes howellii
A. Eastwood, JT Howell
1938-5-18
5771
Lake
Near Adams Springs
Comment
SEINET223495
Isoetes howellii
Barbara Ertter, Jeff Strachan; Lowell Ahart
1980-5-7
3288
Butte
Peter Ahart Ranch ca 2.5 mi NNE of Honcut between Oroville and Marysville.
31
Comment
SEINET3450183
Isoetes howellii
Unknown
2003-5-28
10233
Butte
Alleghany, Alleghany, about 7 air miles northeast, Harris Meadow, upper west branch of Black Jack Ravine, on the west side of Forest highway 98
270
Comment
SEINET3863769
Isoetes howellii
Robert F. Thorne
1973-5-23
43852
Riverside
Santa Rosa Plateau: Wet margin of large vernal pool N side of Mesa de Colorado.; 0
610
Comment
SEINET3863798
Isoetes howellii
Robert F. Thorne, Earl Lathrop
1975-5-20
45542
Riverside
Santa Rosa Plateau: Rancho California, Mesa de Burro.; 0
610
Comment
SEINET6164857
Isoetes howellii
B. Ertter, Jeff Strachan; Lowell Ahart
1980-5-7
3288
Butte
Peter Ahart Ranch ca 2.5 mi NNE of Honcut between Oroville and Marysville.
31
Comment
UC1094376
Isoetes howellii
S. Galen Smith with J. Anderson
1957-6-8
2986
Lake
1.5 mi. e. Loch Lomond (0.25 mi. e. of rd. to Siegler Springs)
822
Comment
UC1094398
Isoetes howellii
R. C. Bacigalupi with S. Galen Smith
1957-6-27
5971
Siskiyou
2 mi. s. Weed (along Hwy. 99)
1036
Comment
UC111604
Isoetes howellii
Dr. E. B. Copeland
1903-5-30
3281
Butte
Chico
Comment
UC1181570
Isoetes howellii
R. F. Hoover
1937-5-18
2211
Sacramento
Rio Linda
Comment
UC1192365
Isoetes howellii
Malcolm A. Nobs and S. Galen Smith
1949-8-18
1386
Plumas
just s. Chester (Last Chance Marshes at n. end of Lake Almanor); Lake Almanor, Last Chance Marshes
Comment
UC1212196
Isoetes howellii
H. E. and S. T. Parks
June 1938
24137
Del Norte
Darlingtonia, Smith R.
121
Comment
UC1225879
Isoetes howellii
Joseph P. Tracy
1941-5-30
16899 1/2
Mendocino
4 mi. n. Calpella (Redwood Valley); Redwood Valley
259
Comment
UC1239794
Isoetes howellii
Harold E. Parks and Joseph P. Tracy
1935-6-2
11252
Del Norte
ca. 2 mi. e. Gasquet (vicinity of Darlingtonia Camp, on Smith R.); Smith R.
121
Comment
UC1259254
Isoetes howellii
L. L. Kiefer
1965-4-18
1504
San Diego
a little w. Miramar Naval Air Station (n. of Miramar Rd., <Kerney Meas>); <Kerney Meas>
152
Comment
UC1259255
Isoetes howellii
L. L. Kiefer
1965-5-23
1539
Ventura
Ojai Valley, Mirror Lake
152
Comment
UC1259502
Isoetes howellii
Lowell Ahart
1978-4-21
Butte
Honcut, Peter Ahart Ranch
50
Comment
UC1260173
Isoetes howellii
Robert F. Thorne
1974-7-27
44980
Lake
n. of Harrington Flat Rd. Boggs Lake
914
Comment
UC1392747
Isoetes howellii
R. F. Hoover
1968-5-28
11127
Shasta
at Old Alturas Rd. Clough Creek
Comment
UC150789
Isoetes howellii
T. S. Brandegee
1895-4-8
San Diego
El Cajon
Comment
UC1532802
Isoetes howellii
Robert F. Thorne and Earl Lathrop
1975-5-20
45542
Riverside
Rancho California, Mesa de Burro
609
Comment
UC1562586
Isoetes howellii
Barbara Ertter with Travis Columbus and Holly Forbes
1989-4-22
8263
Merced
ca 10 air mi ne Merced (Flying M Ranch, se of pools on Burns Creek)
94
Comment
UC1586565
Isoetes howellii
Vernon H. Oswald and Lowell Ahart
1991-5-9
4571
Tehama
ca 6.5 mi nne Red Bluff (ca 1.5 mi ne of Bend Bridge over Sacramento River, ca 400 ft w of large impoundment at entrance kiosk); Paynes Creek Recreation Area
112
Comment
UC1594524
Isoetes howellii
Vernon H. Oswald and Lowell Ahart
1992-4-21
4921
Tehama
ca 5.5 air mi se of Paynes Creek (Finley Lake on Hogstack Rd (Forest Rd 28N24))
850
Comment
UC1594525
Isoetes howellii
Vernon H. Oswald and Lowell Ahart
1992-4-21
4908
Tehama
ca 11 air mi e Red Bluff (Hogstack Rd (Belle Mill Rd or Forest Rd 28N24) near Mud Spring, 9.7 mi (odometer) e of Hwy 99)
316
Comment
UC1605509
Isoetes howellii
Terry O'Brien
May 1995
2131
Riverside
ca 5 mi sw of Grand Ave in Murrieta on Clinton Keith Rd Mesa de Colorado; Santa Rosa Plateau Preserve
600
Comment
UC1605510
Isoetes howellii
Terry O'Brien
May 1995
2130
Riverside
ca 5 mi sw of Grand Ave in Murrieta on Clinton Keith Rd Mesa de Colorado; Santa Rosa Plateau Preserve
600
Comment
UC1609389
Isoetes howellii
Vernon H. Oswald and Lowell Ahart
1993-6-28
5622
Lassen
e Poison Lake (between Champs Flat and Harvey Valley, ne end of Little Harvey Valley, n of Hwy 44 along Rd 33N47, along small branch of Pine Creek); Little Harvey Valley
1737
Comment
UC1616163
Isoetes howellii
Terry O'Brien
1997-3-19
3108 A
Contra Costa
Vasco Caves, approx. 1 mi W of North Vasco Road and 1 mi N of Alameda-Contra Costa county line; access from North Vasco Road ca. 3 mi N of county line
152
Comment
UC1618153
Isoetes howellii
J. C. Game
1996-5-25
96 /41
Sonoma
ca 15 mi nw of Warm Springs Dam (along Rockpile Rd, in Rockpile Ranch)
Comment
UC1714615
Isoetes howellii
L. C. Erickson
1939-5-21
San Diego
8 mi. n. Kearney Mesa
Comment
UC1714616
Isoetes howellii
L. C. Erickson
1939-5-21
San Diego
Kearney Mesa
Comment
UC1714617
Isoetes howellii
L. C. Erickson
1939-5-21
San Diego
Kearney Mesa
Comment
UC1714618
Isoetes howellii
L. C. Erickson
1939-5-21
San Diego
8 mi. n. Kearney Mesa
Comment
UC1731155
Isoetes howellii
Dean W. Taylor
1991-6-12
11896
Shasta
ponds ca. 1.2 mi N of Lake Britton and 1 mile West of Warner Grade Reservoir, just east of PG&E natural gas pipeline
883
Comment
UC200762
Isoetes howellii
Katharine Brandegee
1910-5-29
Marin
Olema
Comment
UC2062877
Isoetes howellii
Forrest Freund
2016-5-17
255
Tehama
Hog Lake vernal pool.
Comment
UC279617
Isoetes howellii
H. E. Parks
1925-9-18
3087
Marin
Lake Lagunitas
Comment
UC353915
Isoetes howellii
Milo S. Baker
1927-5-8
2131 b
Sonoma
near summit of Bennett Valley Rd.
Comment
UC353916
Isoetes howellii
Milo S. Baker
1927-7-2
2281 a
Lake
along hwy. 1 mi. n. Salmina's Resort
Comment
UC375486
Isoetes howellii
W. C. Blasdale
1896-6-10
Trinity
<Hyampum>
Comment
UC42837
Isoetes howellii
C. C. Parry
1889-5-1
Shasta
Anderson
Comment
UC42852
Isoetes howellii
Marshall A. Howe
1896-6-10
146
Trinity
near Hyampon
Comment
UC503070
Isoetes howellii
Joseph P. Tracy
1930-6-15
8746
Humboldt
Larrabee Creek near Bosworth's; Northern Coast Ranges, Larrabee Creek
457
Comment
UC562459
Isoetes howellii
Harold E. Parks and Joseph P. Tracy
1936-6-13
11325
Del Norte
ca. 2 mi. e. Gasquet (vicinity of Darlingtonia Camp, on Smith R.); Smith R.
121
Comment
UC600418
Isoetes howellii
H. F. Copeland
1930-8-13
Sacramento
Sacramento, at Junior College
Comment
UC648479
Isoetes howellii
L. C. Erickson
1939-4-15
San Diego
Kearney Mesa
Comment
UC648482
Isoetes howellii
L. C. Erickson
1939-4-15
San Diego
8 mi. n. Kearney Mesa
Comment
UC648483
Isoetes howellii
L. C. Erickson
1939-4-15
San Diego
8 mi. n. Kearney Mesa
Comment
UC648484
Isoetes howellii
L. C. Erickson
1939-4-15
San Diego
Kearney Mesa
Comment
UC667940
Isoetes howellii
Joseph P. Tracy
1937-8-12
15650
Humboldt
Snow Camp
1402
Comment
UC667941
Isoetes howellii
Joseph P. Tracy
1935-5-25
13841
Humboldt
Fort Seward
106
Comment
UC667944
Isoetes howellii
Joseph P. Tracy
1935-5-25
13842
Humboldt
Fort Seward
106
Comment
UC692078
Isoetes howellii
Mary L. Bowerman
1935-7-22
3187
Contra Costa
s. side Meridian Peak (Hidden Pond); Mt. Diablo, Hidden Pond
518
Comment
UC692079
Isoetes howellii
Mary L. Bowerman
1935-7-22
3187 a
Contra Costa
s. side Meridian Peak (w. end Hidden Pond); Mt. Diablo, Hidden Pond
518
Comment
UC692080
Isoetes howellii
Mary L. Bowerman
1935-6-28
3166
Contra Costa
Chase Pond s. of summit Mt.Diablo (by Old Government trail, e. side of pond); , Chase Pond
548
Comment
UC723171
Isoetes howellii
H. K. Sharsmith
1936-5-21
3669
Santa Clara
s. end of Mt. Day Ridge; Mt. Hamilton Range, Mt. Day Ridge
1066
Comment
UC766778
Isoetes howellii
Robert F. Hoover
1936-5-20
1143
Sutter
Pleasant Grove
Comment
UC766779
Isoetes howellii
Robert F. Hoover
1936-5-20
1143
Sutter
Pleasant Grove
Comment
UC810503
Isoetes howellii
John Thomas Howell
1937-6-6
13015
Sonoma
Sebastopol
Comment
UC810504
Isoetes howellii
Alice Eastwood and John Thomas Howell
1938-5-18
5771
Lake
near Adams Springs
Comment
UC907509
Isoetes howellii
Herbert L. Mason
June 1950
Sacramento
just above n end of Antioch Bridge (San Joaquin River)
Comment
UCD131093
Isoetes howellii
Ayzik Solomeshch; C. Caria, R. Macdonald, S. Talley
2009-4-27
s.n.
San Diego
Cleveland National Forest. Laguna Campground, Mount Laguna. About 14 miles SE of San Diego County Road S1 (also called Sunrise Hwy) from intersection with Hwy 79.
1670
Comment
UCD131111
Isoetes howellii
Ayzik Solomeshch; C. Caria, R. Macdonald, S. Talley
2009-4-27
s.n.
San Diego
Cleveland National Forest. Laguna Campground, Mount Laguna. About 14 miles SE of San Diego County Road S1 (also called Sunrise Hwy) from intersection with Hwy 79.
1670
Comment
UCD131112
Isoetes howellii
Ayzik Solomeshch; C. Caria, R. Macdonald, S. Talley
2009-4-27
s.n.
San Diego
Cleveland National Forest. Laguna Campground, Mount Laguna. About 14 miles SE of San Diego County Road S1 (also called Sunrise Hwy) from intersection with Hwy 79.
1670
Comment
UCD135843
Isoetes howellii
Robert E. Preston
1995-4-1
746
Sacramento
Vernal Pool Preserve, ca. 0.8 mi SW of int. Hwy 16 and Sloughhouse Road.
54
Comment
UCD135864
Isoetes howellii
Thomas H. Whitlow
1976-4
s.n.
Sacramento
Phoenix Park, east of Fair Oaks.
82
Comment
UCD135868
Isoetes howellii
Beecher Crampton
1980-4-23
9705
Solano
North of Allendale store.
Comment
UCD135891
Isoetes howellii
H. van der Werff
1982-4-16
4462
San Diego
Corte Madera Ranch. Pine Valley.
1200
Comment
UCD147466
Isoetes howellii
Ellen Dean; Diana Hickson
2014-4-29
8079
Napa
Knoxville public lands. California Department of Fish and Wildlife property. Headwaters of Nevada Creek. Most northwestern part of property.
579
Comment
UCD150145
Isoetes howellii
Ayzik Solomeshch
2009-5-11
s.n.
Sonoma
Santa Rosa Plain. NW of City of Santa Rosa. Maggi Property located SW of the intersection of Fulton and River Rds. Sampling pool #1.
43
Comment
UCD150855
Isoetes howellii
Ayzik Solomescsh
2009-5-14
s.n.
Sonoma
Sonoma County, 2.3 km. southeast of city of Sebastopol. Santa Rosa Plain, Cooper Site, pool 1. Elevation estimated in Google Earth by label maker.
22
Comment
UCD160710
Isoetes howellii
Ellen Dean; Jake Ruygt
2015-5-23
8769
Napa
Knoxville Wildlife Area. California Dept. of Fish and Wildlife public lands. Headwaters of Nevada Creek.NE corner of land parcel.
592
Comment
UCD21100
Isoetes howellii
Vernal Pool Team 2002; Carol Witham and Jennifer Buck
2002-4-17
276
Tehama
Thomes Creek Ecological Reserve. Approximately 6 miles NW of the town of Corning. Located 200 meters N of a intermittent drainage. Pool # THO003. UTMs: 10S0564312; 4427009.
Comment
UCD21126
Isoetes howellii
Vernal Pool Team 2002; Carol Witham and Jennifer Buck
2002-5-2
301
Sacramento
Phoenix Field Park, the city of Sacramento. 0.5 miles E of Hazel Avenue along Sunset Blvd. Pool #PHO002. UTMs 10S0655082; 4279651.
Comment
UCD21157
Isoetes howellii
Vernal Pool Team 2002; Carol Witham and Jennifer Buck
2002-5-8
332
Mendocino
Ridgewood Ranch site. Pool # RID002. UTMs 10S0474017; 4353766.
Comment
UCD46569
Isoetes howellii
Ellen Dean; David Popp and Kate Mawdsley
2005-6-11
2665
Sacramento
California: Sacramento County, Deer Creek Hills Reserve. South side of Latrobe Rd., along dirt road which begins at gate located 0.6 road miles east of Corral Gate entrance. We traveled 0.5 road miles south of Latrobe Rd, before beginning to walk south.
73
Comment
UCD73220
Isoetes howellii
Ayzik Solomeshch
2005-6-3
s. n.
Fresno
California Department of Fish and Game Big Table Mountain Ecological Reserve. 10 miles NE of the town of Friant.
400
Comment
UCD73285
Isoetes howellii
D. PeBenito, J. Baty, C. Leonzo
2008-3-9
11
Sacramento
Cosumnes River Preserve. Howard Ranch North: Block6, Plot4, Pool 2.
76
Comment
UCD73381
Isoetes howellii
D. PeBenito, J. Baty, C. Leonzo
2008-4-15
11 -a
Sacramento
Cosumnes River Preserve. Howard Ranch North: Block6, Plot4, Pool 2.
76
Comment
UCD80367
Isoetes howellii
CNPS SN Foothill Team
2006-4-26
SNFN 0297 a
Mariposa
Maggie Williams property, private .
617
Comment
UCD80370
Isoetes howellii
CNPS SN Foothill Team
2006-5-4
SNFN 0436 d
Tuolumne
Table Mountain on Minna Grazzettii's property (access through Pat Stone). At top of driveway, walk SW to pool just NW of light blue storage shed.
591
Comment
UCD84101
Isoetes howellii
Ayzik Solomeshch
2009-5-12
s.n.
Sonoma
Sonoma Regional Park.
37
Comment
UCD84281
Isoetes howellii
Ayzik Solomeshch
2009-5-12
s.n.
Sonoma
Along Bennett Valley Road (between Santa Rosa and Glen Ellen).
189
Comment
UCD84377
Isoetes howellii
Ayzik Solomeshch; John Olmsted
2004-6-12
s.n.
Lake
Southern slope of Goat Mtn. Vicinity of Root Glades, N of Wyman Creek.
966
Comment
UCD84409
Isoetes howellii
Ayzik Solomeshch
2004-6-13
s.n.
Lake
Southern slope of Goat Mtn. Vicinity of Root Glades, N of Wyman Creek.
891
Comment
UCD84652
Isoetes howellii
Ayzik Solomeshch
2009-5-6
s.n.
Monterey
Fort Ord, Trail 17.
Comment
UCD84746
Isoetes howellii
Ayzik Solomeshch
2009-5-5
s.n.
Monterey
Fort Ord, Machine Gun Flats.
Comment
UCD85183
Isoetes howellii
Ayzik Solomeshch; C. Caria, R. Holland, R. Macdonald
2009-4-8
s.n.
Monterey
Fort Ord, Butterfly Valley.
Comment
UCD85184
Isoetes howellii
Ayzik Solomeshch; C. Caria, R. Holland, R. Macdonald
2009-4-8
s.n.
Monterey
Fort Ord, Butterfly Valley.
Comment
UCD85185
Isoetes howellii
Ayzik Solomeshch; C. Caria, R. Holland, R. Macdonald
2009-4-8
s.n.
Monterey
Fort Ord, Butterfly Valley.
Comment
UCD85441
Isoetes howellii
Ayzik Solomeshch; C. Caria, R. Holland, R. Macdonald
2009-5-8
s.n.
Monterey
Fort Ord. Mary's Valley.
Comment
UCD85561
Isoetes howellii
Ayzik Solomeshch
2009-6-17
s.n.
Sacramento
Kiefer Landfill, vernal pools.
Comment
UCD85574
Isoetes howellii
Ayzik Solomeshch
2009-6-4
s.n.
Merced
Flying M Ranch, vernal pools.
Comment
UCR113019
Isoetes howellii
L. C. Wheeler
1935-8-5
3785
Modoc
Warner Mtns, Brandy, E fork Bidwell Creek
2409
Comment
UCR113634
Isoetes howellii
June Latting
1978-6-4
s.n.
Riverside
Santa Rosa Plateau, Santa Ana Mtns., Santa Rosa Plateau, Mesa de Burro
610
Comment
UCR12618
Isoetes howellii
K. H. Fisher
1968-4-11
680411- 4
San Diego
South Coast, San Diego, Kearney Mesa, c. 1 mile west of Hwy 395, edge of Miramar Road
Comment
UCR222301
Isoetes howellii
R. F. Thorne, E. W. Lathrop, Steve Beckstrom-Sternberg, B. Martin
1982-1
55204
Riverside
Peninsular Ranges; Santa Ana Mountains, SW of Murrieta, Santa Rosa Plateau, Mesa de la Punta near south edge of plateau, approached by De Luz Rd.
579
Comment
UCR224700
Isoetes howellii
Ayzik Solomeshch
2009-5-6
s.n.
Monterey
Fort Ord, Trail 17
Comment
UCR225035
Isoetes howellii
Ayzik Solomeshch, C. Caria, R. Holland, R. MacDonald
2009-5-8
s.n.
Monterey
Central Coast, Fort Ord, Mary's Valley
Comment
UCR51945
Isoetes howellii
David Charlton
1987-8-29
1082
Madera
Sierra Nevada Mtns., Badger Lakes, several miles NE of Devils Post Pile. Minaret Wilderness Area, Inyo National Forest near the town of Mammoth Hot Springs
2900
Comment
UCR60722
Isoetes howellii
R. F. Thorne
1973-5-23
43852
Riverside
Santa Rosa Plateau, north side of Mesa de Colorado
610
Comment
UCSB26167
Isoetes howellii
Wilken, Dieter
1969-3-3
San Diego
Kearney Mesa, along road between US Highway 101 and US Highway 395, 1.5 miles W of US Highway 395.
Comment
UCSB39086
Isoetes howellii
Jorgensen, Jan
1982-3-5
San Diego
North San Diego, Clairemont Mesa Blvd. to Kearny Mesa Rd. to its northern end.
100
Comment
UCSB40613
Isoetes howellii
Reisentz, Paul
1979-4-14
Ventura
At Mirror Lake, 1 mile south on Hwy 33 from Hwy 150, 3 miles SW of Ojai.
Comment
UCSB44503
Isoetes howellii
Reisentz, Paul
1979-4-22
Ventura
Mirror Lake, 1/2 miles S of intersection of Hwy 150 and Hwy 33, 3 miles SW of Ojai, 12 miles N of Ventura.
190
Comment
UCSB52655
Isoetes howellii
Thorne, Robert; Thorne, M.; Wisura, Walter
1978-5-21
Riverside
Santa Rosa Plateau: Mesa de Colorado.
609
Comment
UCSB60226
Isoetes howellii
Olson, Mark
1993-6-18
Santa Barbara
Burton Mesa project area: W of Vandenberg Village, nearly a mile SW of Cabrillo High School, S of Hwy 1. Shown as intermittent pond on Lompoc quadrangle.
Comment
UCSB71152
Isoetes howellii
Burgess, Rick; Magney, David
1982-6-26
Ventura
Mirror Lake, W side Hwy 33 between Hwy 150 and Woodland Ave. Area destroyed by housing project.
188
Comment Read comments Jan 29 2019
YM-YOSE117153
Isoetes howellii
Alison Colwell, GROSSENBACHER, DENA --WANAMAKER, HOLLY --MOORE, PEGGY
2005-7-6
AC 05 -52
Tuolumne
SMALL LAKE W OF PATE VALLEY, 0.6 KM NE OF MORRISON CREEK-TUOLUMNE RIVER CONFLUENCE, YOSEMITE NATIONAL PARK
Comment
YM-YOSE117981
Isoetes howellii
Alison Colwell, SANDERS, ANGELA --COULTER, CHARLOTTE
2004-7-15
AC 04 -145
Tuolumne
JUST EAST OF LAKE ELEANOR RANGER STATION, BY BOAT LAUNCH, YOSEMITE NATIONAL PARK.
1444
Comment
YM-YOSE118501
Isoetes howellii
Alison Colwell
2006-8-17
AC 06 -373
Tuolumne
Meadow at head of upper Lyell Canyon, Lyell Fork of the Tuolumne River. .
2737
Comment
YM-YOSE118502
Isoetes howellii
Alison Colwell
2006-8-17
AC 06 -373
Tuolumne
Meadow at head of upper Lyell Canyon, Lyell Fork of the Tuolumne River. .
2737
Comment
YM-YOSE118556
Isoetes howellii
Alison Colwell
2006-8-29
AC 06 -453
Tuolumne
Pond complex 1 mile North of Ireland Creek - Tuolumne River confluence on East side of river, Lyell Canyon. .
2689
Comment
YM-YOSE118559
Isoetes howellii
Alison Colwell
2006-8-30
AC 06 -460
Tuolumne
Pond 0.8 mile due West of Parker Pass Creek - Dana Fork of the Tuolumne River confluence and 0.25 mile North of Tioga Pass road. .
2896
Comment
YM-YOSE118560
Isoetes howellii
Alison Colwell
2006-8-30
AC 06 -460
Tuolumne
Pond 0.8 mile due West of Parker Pass Creek - Dana Fork of the Tuolumne River confluence and 0.25 mile North of Tioga Pass road. .
2896
Comment
YM-YOSE118824
Isoetes howellii
Dena Grossenbacher
2006-8-2
DG 06 -198
Tuolumne
Pond just North of Soda Springs, Tuolumne Meadows. .
2635
Comment
YM-YOSE119041
Isoetes howellii
Dena Grossenbacher
2006-5-29
DG 06 -80
Tuolumne
About half way between Hetch Hetchy Backpackers Camp and Kolana Rock, Hetch Hetchy Reservoir. .
1463
Comment
YM-YOSE119075
Isoetes howellii
Maureen McGlinchy, Grossenbacher, Dena --Grove, Sara --Oliver, Martin
2006-6-25
MM 01
Tuolumne
Small lake West of Pate Valley, 0.6 km Northest of Morrison Creek-Tuolumne River confluence. .
1317
Comment
CAS-BOT-BC35924
Isoetes howellii
Doreen Smith
2002-6-29
s.n.
Marin
Mt. Tamalpais. High Marsh.
Comment
CAS-BOT-BC368083
Isoetes howellii
Greg de Nevers
1998-4-28
11209
Sonoma
Cresta Ranch, Cresta Road east of Mark West Lodge
Comment
CAS-BOT-BC368087
Isoetes howellii
Greg de Nevers
1998-3-20
11220
Sonoma
Cresta Ranch, Mark West Creek
Comment
CAS-BOT-BC57718
Isoetes howellii
Clare R. Wheeler
1978-7-11
496
Mendocino
Eden Valley Road 3 mi. N.E. of Hearst
1249
Comment
CAS-BOT-BC57719
Isoetes howellii
Clare R. Wheeler; Gladys L. Smith
1981-5-27
2337
Mendocino
Eden Valley Ranch South Pond at summit of road 7 miles N. of Hearst
1219
Comment
CAS-BOT-BC57720
Isoetes howellii
Alice Eastwood; John Thomas Howell
1937-5-31
4450
Mendocino
Sherwood Valley
Comment
CAS-BOT-BC57722
Isoetes howellii
D. E. Breedlove
1974-4-27
36200
Napa
along Silverado Trail just north of junction with Oak Knoll Road
Comment
CAS-BOT-BC57726
Isoetes howellii
W. R. Dudley
1909-10-31
s.n.
San Mateo
Woodside Valley pond
Comment
CAS-BOT-BC57727
Isoetes howellii
W. R. Dudley
1908-6-26
s.n.
San Mateo
W. of Seafield Pond, Coal Mine Ridge
Comment
CAS-BOT-BC57730
Isoetes howellii
W. R. Dudley
1909-10-31
s.n.
San Mateo
Woodside Valley Pond
Comment
CAS-BOT-BC57732
Isoetes howellii
J McMurphy
1906-7-28
s.n.
San Mateo
Coal Mine Ridge - near Portola
Comment
CAS-BOT-BC57733
Isoetes howellii
L. R. Abrams
1923-4-19
10108
San Mateo
Alameda de los Pulgas back of Menlo Park
Comment
CAS-BOT-BC57735
Isoetes howellii
Peter Rubtzoff
1962-6-8
4890
Sonoma
Bennett Mountain Lake
Comment
CAS-BOT-BC57736
Isoetes howellii
Peter Rubtzoff
1963-6-22
5188
Sonoma
Bennett Mountain Lake
Comment
CAS-BOT-BC57737
Isoetes howellii
John Thomas Howell
1934-3-27
11805
Sonoma
Summit of Bennett Valley road from Glen Ellen to Santa Rosa
Comment
CAS-BOT-BC57739
Isoetes howellii
John Thomas Howell
1934-3-27
11805
Sonoma
Summit of Bennett Valley road from Glen Ellen to Santa Rosa
Comment
CAS-BOT-BC69905
Isoetes howellii
Alice Eastwood; John Thomas Howell
1938-5-16
5600
Lake
10 mi. n. of Lower Lake.
Comment
CAS-BOT-BC69906
Isoetes howellii
J. W. Blankinship
1926-6-16
s.n.
Lake
Kelseyville, along Cold Cr.
Comment
CAS-BOT-BC69913
Isoetes howellii
John Thomas Howell
1947-5-25
23204
Marin
Willow Meadow, Mt. Tamalpais.
Comment
CAS-BOT-BC69915
Isoetes howellii
John Thomas Howell
1926-8-15
2187
Marin
Strand of Lake Lagunitas.
Comment
CAS-BOT-BC69916
Isoetes howellii
Brandegee
s.n.
Marin
Olema.
Comment
CAS-BOT-BC69926
Isoetes howellii
J. Clausen
1937-7-30
1583
Tuolumne
Mather.
1400
Comment
CAS-BOT-BC69927
Isoetes howellii
Carl Mahurin
1937-7-30
25
Tuolumne
Mather, w. of Park line.
Comment
CAS-BOT-BC69928
Isoetes howellii
John Thomas Howell
1937-5-20
12961
San Benito
12 mi. s. of Paicenes.
Comment
CAS-BOT-BC69929
Isoetes howellii
Alice Eastwood; John Thomas Howell
1938-5-5
5457
Madera
5 mi. from Raymond on road to Coarse Gold.
Comment
CAS-BOT-BC69932
Isoetes howellii
John Thomas Howell; R. C. Barneby
1954-5-13
29527
Amador
Plymouth.
274
Comment
CAS-BOT-BC69934
Isoetes howellii
Clare B. Hardham
1957-5-12
1944
San Luis Obispo
Around edges of Green's Lake.
Comment
CAS-BOT-BC69935
Isoetes howellii
Clare B. Hardham
1957-5-12
1943
San Luis Obispo
Near Green's Lake.
Comment
CAS-BOT-BC69936
Isoetes howellii
Joseph P. Tracy
1930-6-15
8746
Humboldt
Larrabee Creek, near Bosworth's.
457
Comment
CAS-BOT-BC69937
Isoetes howellii
Joseph P. Tracy
1930-6-15
8746
Humboldt
Larrabee Creek, near Bosworth's.
457
Comment
CAS-BOT-BC69939
Isoetes howellii
W. R. Dudley
1901-4-4
s.n.
Monterey
Near Upper Bennett Cr.
Comment
CAS-BOT-BC69940
Isoetes howellii
Helen K. Sharsmith
1936-5-21
3669
Santa Clara
Edge of sag pond, southern end of Mount Day Ridge, Inner S. Coast Ranges, Mount Hamilton Range.
1066
Comment
CAS-BOT-BC69941
Isoetes howellii
Doris Kildale Gillespie
1930-5-14
9359
Tehama
10 mi. e. of Red Bluff on Susanville Road.
Comment
CAS-BOT-BC69948
Isoetes howellii
Lowell Ahart
1974-5-30
s.n.
Butte
Peter Ahart Ranch, Honcut.
45
Comment
CAS-BOT-BC69950
Isoetes howellii
Lowell Ahart
1975-6-20
s.n.
Butte
Peter Ahart Ranch, about two mi. n. of Honcut.
Comment
CAS-BOT-BC69974
Isoetes howellii
Lowell Ahart
1985-5-5
4890
Sutter
Near the first gate to the Dean Ranch, about 1/4 mi. n. of Mallott Road, about 2 mi. ne. of Sutter, Sutter Buttes.
35
Comment
CAS-BOT-BC69975
Isoetes howellii
Lowell Ahart
1986-5-4
5249
Sutter
Near the first gate to the Dean Ranch, about 1/2 mi. n. of the intersection of Mallott Road and Alf Road, about 2 mi.
30
Comment
CDA42452
Isoetes howellii
T. C. Fuller
1958-4-15
4793
Butte
Highway 99E, 10 miles northwest of Chico.
0
Comment
GH309036
Isoetes howellii
L. C. Wheeler
1935-8-3
3757
Unknown
Rock Lake, Pine Creek, Warner Mts. S48, T48N, R15E
Comment
HSC100969
Isoetes howellii
Peter Warner
2011-5-27
208
Sonoma
Cresta Ranch, Cresta Rd. (off Mark West Springs Rd. at Mark West Lodge), ~1.6 km E of this junction on N edge of road.
0
Comment
HSC84735
Isoetes howellii
Gladys L. Smith, Clare R. Wheeler
5821
Mendocino
S end of Leonard Lake, upper Reeves Canyon
518
Comment
HSC895
Isoetes howellii
H. E. Parks, J. P. Tracy
1936-6-13
11325
Del Norte
Smith River about 2 mi. E of Gasquet
122
Comment
HSC896
Isoetes howellii
H. E. Parks, S. T. Parks
Jun 1938
24137
Del Norte
Smith River
122
Comment
JEPS79612
Isoetes howellii
Edward Lee
1974-5-11
Sonoma
Laguna R.R. bridge Sebastopol
Comment
OBI22890
Isoetes howellii
H. E. Parks, S. T. Parks
1938-6-1
24137
Del Norte
Darlingtonia, Smith River
122
Comment
PGM3698
Isoetes howellii
Vern Yadon
1998-5-2
Monterey
Northern Monterey County, Ft Ord, Henniken Flats Vernal Areas
Comment
POM203033
Isoetes howellii
J. T. Howell
1934-3-27
11805
Sonoma
Summit of Bennett Valley road from Glen Ellen to Santa Rosa
Comment
POM210005
Isoetes howellii
H. E. Parks
1925-9-18
s.n.
Marin
Lake Lagunitas.
Comment
POM25514
Isoetes howellii
Katherine Brandegee
1910-5-29
s.n.
Marin
Olema
Comment
POM26550
Isoetes howellii
H. F. Copeland
1903-5-30
292
Butte
Chico.
Comment
POM28318
Isoetes howellii
H. H. Tracy
1918-08
680
San Bernardino
Switzers Meadows, margin of brook leading into Arrowhead Lake. San Bernardino Mountains
Comment
POM312958
Isoetes howellii
Malcolm A. Nobs, S. Galen Smith
1949-8-18
1386
Plumas
Last Chance Marshes at north end of Lake Almanor, just south of Chester.
Comment
RSA116774
Isoetes howellii
W. R. Dudley
1909-10-31
s.n.
San Mateo
Woodside Valley pond.
Comment
RSA124098
Isoetes howellii
Chas H. Quibell
1953-8-6
3122
Fresno
9000 Mysery L on broad bench on SE side of Dinkey Creek Canyon, 200 above Crk and below 9250 Swede L and the 10400 plus Three Sisters Ridge to the ESE - near headwaters of Dinkey Creek, lowest Trib N Fk Kings River.
Comment
RSA128169
Isoetes howellii
Clare B. Hardham
1959-4-19
4260
San Luis Obispo
0.7 mile W of Huero Huero Bridge, Rte 41.
Comment
RSA151818
Isoetes howellii
H. E. Parks, S. T. Parks
1938-06
24137
Del Norte
Darlingtonia, Smith River
122
Comment
RSA17907
Isoetes howellii
Mary Belle West
1928-6-1
s.n.
Santa Clara
Back of Stanford University.
Comment
RSA227253
Isoetes howellii
Peter Rubtzoff
1963-6-22
5188
Sonoma
Bennett Mountain Lake.
Comment
RSA261555
Isoetes howellii
W. R. Powell
1970-3-26
1692
Butte
Just off of La Porte Road, 1.8 miles NE of Bangor and ca 15 miles SE of Oroville.
343
Comment
RSA268974
Isoetes howellii
J. R. Reeder, C. G. Reeder
1975-6-4
6675
Tehama
ca. 4 miles SW of Dales - ca. 11 miles NE of Red Bluffs.
274
Comment
RSA299560
Isoetes howellii
Edward Lee, Annetta Carter
1936-7-4
2273
Santa Clara
Pond in hollow in ridge from Mt. Day to junction of Smith and Santa Isabela Creeks, Mt. Hamilton Range.
Comment
RSA518973
Isoetes howellii
Barbara Ertter, J. T. Columbus, Holly C. Forbes
1989-4-22
8263
Merced
Flying M Ranch, ca 10 air miles NE of Merced.
95
Comment
RSA54092
Isoetes howellii
J. T. Howell
1946-9-1
22977
El Dorado
Echo Summit.
Comment
RSA576444
Isoetes howellii
L. C. Wheeler
1934-7-3
2871
Siskiyou
Soda Creek, Sterling Mt. Siskiyou Mountains. (Mt. Diablo Mer.)
1676
Comment
RSA639343
Isoetes howellii
L. C. Wheeler
1935-8-3
3757
Modoc
Warner Mountains: Rock Lake, Pine Creek
1920
Comment
RSA639344
Isoetes howellii
L. C. Wheeler
1935-10-6
4025
Modoc
Lily Lake, Pine Creek. (Mt. Diablo Mer.)
2073
Comment
RSA639347
Isoetes howellii
L. C. Wheeler
1935-8-5
3785
Modoc
Brandy, E fork Bidwell Creek. (Mt Diablo mer.)
2409
Comment
RSA684565
Isoetes howellii
T. R. Pray
1955-7-18
1024
Tuolumne
Mather.
Comment
RSA87748
Isoetes howellii
C. L. Hitchcock
1952-6-25
19616
Shasta
Between Project and Redding.
Comment
RSA88934
Isoetes howellii
Chas H. Quibell
1953-6-2
2156
Fresno
B3 ditch where it siphons successively under Shaw Ave., Santa Fe RR and Jeanne Ave, NW of Fresno.
Comment
SBBG122675
Isoetes howellii
J. Dittes
2003-5-25
2003 -28
Placer
ca. 3.3 air-mi S of Lincoln, 0.5 air-mi E of jct of State Hwy 65 and Twelve Bridges Exit
39
Comment
SBBG128804
Isoetes howellii
L. Ahart
2013-5-22
18703
Butte
ca. 0.5 mi SE of the Honcut Cemetery, ca. 3.25 mi NE of Honcut
54
Comment
SD120719
Isoetes howellii
Edward Lee, Annetta Carter
1936-7-4
2273
Santa Clara
Mount Hamilton Range, pond in hollow on ridge from Mt. Day to junction of Smith and Santa Isabela creeks
Comment
SD131805
Isoetes howellii
Barbara Ertter, Travis Columbus, Holly Forbes
1989-4-22
8263
Merced
Flying M Ranch, ca 10 air miles northeast of Merced, along streamlet cutting through low bluffs southeast of pools on Burns Creek
92
Comment
SEINET10470692
Isoetes howellii
Lowell Ahart
1985-5-5
Ahart 4890
Sutter
Near the first gate to the Dean Ranch, about 1/4 mile north of Mallott Road, about 2 miles north-east of Sutter.
Comment
SEINET10794085
Isoetes howellii
Wayne Roderick
Roderick s.n.
Sonoma
In a vernal pool, in the Sonoma Mountains east of Cotati, on the Rivers Ranch.
305
Comment
SEINET10807508
Isoetes howellii
Samuel B. Parish, W. F. Parish
1882-8-1
Parish 1440
Unknown
Bear Valley, San Bernardino Mountains.
2134
Comment Read comments Oct 1 2017
SEINET10839545
Isoetes howellii
Lowell Ahart
1983-6-6
Ahart 4031
Butte
Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m.
50
Comment
SEINET10932892
Isoetes howellii
Mary Susan Taylor
1980-5-24
Taylor 2738
Butte
Peter Ahart Ranch, Honcut.
50
Comment
SEINET11718944
Isoetes howellii
Unknown
1982-1
641
Tehama
Vina Plains Preserve, ca 30 m S of Lassen Road in W pasture
66
Comment
SEINET207377
Isoetes howellii
R. Bacigalupi, GT Robbins
1959-4-23
7036
Shasta
Along Hwy 299 about 2 mi W of Bella Vista
183
Comment
SEINET3014527
Isoetes howellii
Lowell Ahart
1997-8-28
7874
Sierra
Sierra County, CA West of the Pacific Crest Trail and Bunker Hill Ridge, about 1 mi W of Bunker Hill Mine, about 1 mi SE of Pilot Peak
Comment
SEINET3863766
Isoetes howellii
Katherine Pinney
1975-4-8
12
Sacramento
Fair Oaks, Phoeniz Airfield, 1/4 mile east of Hazel Avenue on Sunset Road.; 0
61
Comment
SEINET3863772
Isoetes howellii
Alv Dan Youngberg
1968-4-13
901
Butte
On Table Mountain above Oroville.; 0
Comment
SEINET3863777
Isoetes howellii
H. E. Parks
1925-9-18
s.n.
Marin
Lake Lugunitas.; 0
Comment
SEINET3863780
Isoetes howellii
D. W. McNeal
1983-4-22
2797
Calaveras
Beside the rd. to Jenny Lind, 0.2 mi. s. of Hwy. #26 at Stone Corral.; 0
Comment
SEINET3863802
Isoetes howellii
Barbara Ertter, Jeff Strachan; Lowell Ahart
1980-5-7
3288
Butte
Peter Ahart Ranch ca 2 1/2 mi NNE of Honcut between Oroville and Marysville, dry ditches in oat field near ponds, Valley Grassland.; 0
30
Comment
SEINET6164860
Isoetes howellii
M. Lavin, K. Warren
1979-9-2
s.n.
Modoc
South Warner Wilderness Area, along N edge of N Emerson Lake
2438
Comment
SEINET6164863
Isoetes howellii
L. C. Wheeler
1935-8-3
3757
Modoc
Warner Mtns; Rock Lake, Pine Creek
1920
Comment
UC1177514
Isoetes howellii
John Thomas Howell
1947-5-25
23204
Marin
Mt. Tamalpais, Willow Meadow
Comment
UC1223545
Isoetes howellii
Joseph P. Tracy with Mr. Murphy
1951-6-26
19582
Humboldt
upper of Twin Lakes
Comment
UC1584757
Isoetes howellii
Ed Lee
1979-6-9
Marin
High Marsh
Comment
UC1728010
Isoetes howellii
Vern Yadon
1998-5-7
Monterey
BLM Lands e. of Hennekin's Ranch Rd. Fort Ord
Comment
UC1818909
Isoetes howellii
Barbara Ertter, Mary Bowerman et al.
1995-5-7
14032
Contra Costa
Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, in water of pond west of road in grassy flat.
Comment
UC1950034
Isoetes howellii
R. F. Thorne, E. W. Lathrop, S. Bickstrom-Sternberg, B. Martin
May 1982
55204
Riverside
Peninsular Ranges; Santa Ana Mountains region: SW of Murrieta. Santa Rosa Plateau, Mesa de la Punta near S. edge of plateau, approached from De Luz road.
Comment
UC400942
Isoetes howellii
Mrs. C. C. Hall
1923-1
Tuolumne
Salt Log near Mather (on ridge rd.); Salt Log
Comment
UC936235
Isoetes howellii
Joseph P. Tracy
1949-7-19
18398
Humboldt
Grouse Mt., Mud Lake
1524
Comment
UCD135846
Isoetes howellii
Rimo Bacigalupi; G. T. Robbins
1959-4-23
7036
Shasta
Along U.S. Highway 299, Salmon Creek, about 2 miles west of Bella Vista.
201
Comment
UCD135849
Isoetes howellii
Rimo Bacigalupi; G. T. Robbins
1956-6-1
5693
Lake
At eastern end of 'Dry Lake', 1.4 miles west of Lower Lake.
457
Comment
UCD135851
Isoetes howellii
Leslie Coburn
1975-5-31
121
Calaveras
Ca. 9.8 miles east of Westpoint, Winton Road.
914
Comment
UCD135854
Isoetes howellii
Malcolm A. Nobs; S. Galen Smith
1949-8-18
1386
Plumas
Last Chance Marshes at north end of Lake Almanor, just south of Chester.
Comment
UCD135856
Isoetes howellii
W. R. Powell
1970-3-26
1692
Butte
Just off of La Porte Road, 1.8 miles northeast of Bangor and ca. 15 miles southeast of Oroville.
342
Comment
UCD135860
Isoetes howellii
W. R. Russell
1972-5-25
s.n.
Napa
Just west of State Highway 29 and south of Calistoga.
Comment
UCD135879
Isoetes howellii
Charles H. Pinney
1975-4-8
12
Sacramento
Fair Oaks, Phoenix Airfield. 1/4 mi E of Hazel Avenue on Sunset Road.
60
Comment
UCD135884
Isoetes howellii
Janey Veneman
1974-6-1
15
Sacramento
Sunset Ace. Across from Phoenix Field, 0.7 miles east of junction with Hazel Ave.
21
Comment
UCD34316
Isoetes howellii
Beecher Crampton
1980-4-23
9705
Solano
Solano County, 3/4 mile north of Allendale store, 1/4 mile north of Allendale road along Winters road.
Comment
UCSB50187
Isoetes howellii
Gray, John
1976-5-8
Sacramento
Phoenix Park, on Sunset Ave. approx. 3 miles N of Hwy 50 at Hazel Avenue exit. T 9N, R 7E.
76
Comment
UCSB61659
Isoetes howellii
Ertter, Barbara; Columbus, Travis; Forbes, Holly
1989-4-22
Merced
Flying M Ranch ca 10 air miles NE of Merced, T65 R15E. Pool along streamlet cutting through low bluffs SE of pools on Burns Creek.
94
Comment
UCSB6994
Isoetes howellii
Hardham, Clare
1963-6-5
Monterey
Bryson
Comment Read comments Sep 16 2015
UCSC009757
Isoetes howellii
D. Styer, D. Neubauer
2010-4-29
270
Monterey
Mary's Valley (Ft Ord Region H7)
Comment
JEPS104917
Isoetes howellii var. howellii
Dean W. Taylor
1995-7-2
15208
Shasta
Goose Valley Road about 1.5 miles North of Highway 299 junction, adjacent to railroad tracks
944
Comment
SEINET10754764
Isoetes howellii var. minima
Alice Eastwood
1896-7-4
Eastwood S.N.
Unknown
marsh about a mile from Marin County, California
Comment