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Specimen ID
Determination *
Collector
Collection Date
Collection Number
County
Locality
Elevation in meters
Feedback
CAS-BOT-BC258010
Persicaria hydropiper
Peter Rubtzoff
1973-8-20
7223
Sonoma
Sonoma Creek bottom near Agua Caliente Road crossing west of Agua Caliente.
Comment
CAS-BOT-BC413698
Persicaria hydropiper
John Thomas Howell
1936-8-25
12779
Trinity
Near Trinity Center
Comment
CAS-BOT-BC413712
Persicaria hydropiper
Carl D. Duncan
1920-9-22
s.n.
Humboldt
Hoopa Valley
Comment
CAS-BOT-BC413714
Persicaria hydropiper
Malcom A. Nobs; S. Galen Smith
1949-9-2
1750
Inyo
On Pine Creek Road, 2 miles west of Highway 395, 13.5 miles north of Bishop
Comment
CAS-BOT-BC413716
Persicaria hydropiper
Peter H. Raven
1953-8-29
6231
Inyo
N. end of Bishop
Comment
CDA42946
Persicaria hydropiper
L. Ahart
2012-10-28
18522
Butte
On the south side of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico.
Comment
CHSC109766
Persicaria hydropiper
Lowell Ahart
2012-10-28
18522
Butte
About 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico.
68
Comment
CHSC30868
Persicaria hydropiper
J. D. Jokerst
1980-7-18
997
Butte
Top of North Table Mt., ca 100 m NW of the jct. Cherokee Rd. and the east edge of mt.
Comment
CHSC31763
Persicaria hydropiper
L. Ahart
1977-9-20
1582
Butte
Peter Ahart Ranch, Honcut, along edges of North Honcut Creek.
50
Comment
CHSC34192
Persicaria hydropiper
L. Ahart
1981-9-19
3177
Butte
Along edge of the road just a few feet n of the Arch Rock Tunnel, on Hwy 70, ca. 10 mi s of Storrie.
550
Comment
CHSC34304
Persicaria hydropiper
L. Ahart
1981-9-6
3069
Plumas
On a sand bar along Indian Creek, ca. 0.5 mi s w of the jct of Hwy 89 and Arlington Rd, ca. 1.5 mi sw of Crescent Mills.
1200
Comment
CHSC37071
Persicaria hydropiper
L. Ahart
1982-10-6
3846
Butte
Peter Ahart Ranch, ca. 3 mi ne of Honcut. Along edge of North Honcut Creek.
50
Comment
CHSC37113
Persicaria hydropiper
L. Ahart; M. S. Taylor
1982-10-11
3864
Butte
Along edges of large duck pond, ca. 0.1 mi w of Graylodge HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley.
35
Comment
CHSC37256
Persicaria hydropiper
L. Ahart
1982-8-22
3746
Butte
Along edge of North Honcut Creek, Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut.
50
Comment
CHSC38617
Persicaria hydropiper
Vernon Oswald
1983-8-19
1012
Butte
Upper Bidwell Park, Chico, in Lindo Channel ca. 100 ft upstream from the flood-control gates.
79
Comment
CHSC40618
Persicaria hydropiper
Lowell Ahart
1985-10-19
5210
Sutter
On the sides of the pond, about 1/8 mile southeast of the Dean Cabin, Dean Ranch, Sutter Buttes.
274
Comment
CHSC40909
Persicaria hydropiper
Lowell Ahart
1985-11-7
5234
Butte
About 80 feet below the high water line of Lake Oroville, on the bottom of the South Fork of the Feather River, about 300 yards north-west of the Ponderosa Dam.
277
Comment
CHSC42730
Persicaria hydropiper
Lowell Ahart
1987-5-27
5716
Butte
On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap.
271
Comment
CHSC43247
Persicaria hydropiper
Lowell Ahart
1987-10-22
5921
Butte
Along a drain ditch, along Oroville Chico Highway (149), 1/10 mile north-west of Highway 70.
76
Comment
CHSC45466
Persicaria hydropiper
Lowell Ahart
1983-9-17
4437
Butte
On the sides of a deep wash, about 1/4 mile south-east of Stirling City.
1097
Comment
CHSC47471
Persicaria hydropiper
Lowell Ahart
1989-11-12
6402
Butte
On the bottom of a shallow wash, in the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville.
30
Comment
CHSC50681
Persicaria hydropiper
Lowell Ahart
1990-6-16
6521
Butte
Growing on wet mud along McCabe Creek, below the high water line at Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville.
243
Comment
CHSC50682
Persicaria hydropiper
Lowell Ahart
1990-5-25
6493
Butte
On the sides of a small stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville.
259
Comment
CHSC55252
Persicaria hydropiper
Lowell Ahart
1991-9-14
6714
Butte
On the sides of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut.
45
Comment
CHSC61990
Persicaria hydropiper
Vernon H. Oswald
1993-9-20
5935
Glenn
Sacramento National Wildlife Refuge. Refuge located ca. 7 mi S of Willows, Wetlands Hiking Trail along the W boundary N of the main entrance (Cell1, Tract 11).
30
Comment
CHSC66202
Persicaria hydropiper
Vernon H. Oswald; Lowell Ahart
1996-6-3
7724
Tehama
Hog Lake Plateau BLM parcel along Hwy. 36 NE of Red Bluff. Growing on a gravel bar on the E side of Paynes Creek just upstream from the Sacramento River.
91
Comment
CHSC66897
Persicaria hydropiper
Vernon H. Oswald
1996-10-22
8301
Butte
Oroville Wildlife Area on the NW side of the Feather River just upstream from the outlet of Thermalito Afterbay.
33
Comment
CHSC67279
Persicaria hydropiper
James D. Jokerst; Jeri Donovan
1981-9-30
1499
Tehama
Wurlitzer Ranch on Pine Creek, 1.0 mi E of Meridian Rd., ca. 0.5 mi E of Bell Ranch on S bank of Pine Creek.
Comment
CHSC72337
Persicaria hydropiper
Vernon H. Oswald
1998-10-19
9667
Solano
Grizzly Island Rd. 5.5 mi south of Hwy. 12 near Suisun City, along the fisherman's trail on the north side of Montezuma Slough west of the bridge.
0
Comment
CHSC73980
Persicaria hydropiper
B. Castro
1995-9-10
612
Butte
Ca 2 air mi N of Feather Falls, towards western end of Watson Ridge, in meadow at the old Watson Cabin site, north of USFS Rd 21N25. In upper third of meadow.
1109
Comment
CHSC76288
Persicaria hydropiper
Lowell Ahart
1999-9-21
8271
Butte
Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico.
32
Comment
CHSC76403
Persicaria hydropiper
Lowell Ahart; Vernon H. Oswald
1999-10-3
8293
Butte
Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico.
32
Comment
CHSC98412
Persicaria hydropiper
L. Ahart
1983-9-17
4437
Butte
1/4 mi se of Stirling City.
1100
Comment
JEPS120019
Persicaria hydropiper
Lowell Ahart
2012-10-28
18522
Butte
On the south side of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico.
Comment
SD131785
Persicaria hydropiper
L. R. Heckard, P. Rubtzoff
1971-9-15
2806
San Joaquin
Along Airport Way, 2.6 miles south of junction of West Ripon road (ca. 7 miles southwest of Manteca), edge of muddy irrigation ditch
Comment
SD236379
Persicaria hydropiper
G. K. Helmkamp, E. A. Helmkamp
2006-10-10
11528
Yuba
Northern Sierra Nevada Mountains Foothills: along Hwy Ca-49 just north of Nevaday county line at the Middle Yuba River Bridge.
451
Comment
SD241150
Persicaria hydropiper
A. C. Sanders
2009-6-1
37065
Los Angeles
San Gabariel Valley: Rio Hondo in Whittier Narrows area, west of RosemeadBlvd. (Hwy 19) under SCE powerlines, beyond a tree nursery (El Monte 7.5'Q)
63
Comment
SEINET3924333
Persicaria hydropiper
George K. Helmkamp, E. A. Helmkamp
2007-10-28
13121
Sutter
Sacramento Valley: along Nicolaus Road, 0.1 mile west of the Placer County line.; 0
12
Comment
SEINET3924776
Persicaria hydropiper
Louis C. Wheeler
1934-9-20
3287
Siskiyou
Lumgrey Creek.; 0
671
Comment
UCD105089
Persicaria hydropiper
K. M. Meyer; A. Townesmith
2007-9-24
251
Santa Clara
Henry W. Coe State Park, SW corner of park, Hunting Hollow entrance and parking area.
253
Comment
UCD150005
Persicaria hydropiper
G. Ledyard Stebbins
1976-9-25
76263
El Dorado
At south side of American River, at junction of North and Middle Fork, immediately east of State Highway 49. (Exact location unknown. Coordinates estimated by label maker.)
176
Comment
UCD165109
Persicaria hydropiper
Peter Rubtzoff
1973-9-9
7310
Sonoma
Kenwood Marsh.
Comment
UCD166044
Persicaria hydropiper
Daniel M. McNair
2016-8-2
2196
El Dorado
west side of Tahoe Basin at D.L. Bliss State Park.
1897
Comment
UCD54152
Persicaria hydropiper
Molly Enloe
1992-9-20
9- 12
Sacramento
Cosumnes River Preserve Plant Inventory. Area 9: bounded by RR tracks on W, seasonally flooded field and property line on N, Willow Slough and dry portion to road on S.
2
Comment
UCD54153
Persicaria hydropiper
Molly Enloe
1992-9-20
9- 7
Sacramento
Cosumnes River Preserve Plant Inventory.
Comment
UCD82363
Persicaria hydropiper
M. Tu
1998-11-5
128
Sacramento
Cosumnes River Preserve Plant Inventory - Seed Bank Plants.
1
Comment
UCD99058
Persicaria hydropiper
Frederica Bowcutt
1997-7-18
2174
Sonoma
Sugarloaf Ridge State Park. About 50 air miles N of San Francisco, 10 air miles E of Santa Rosa, 2.5 air miles NE of Kenwood and 18 air miles NW of Napa. Just south of midpoint between Mt. Hood and Red Mountain. Road on ridge West of Bear Ck.
365
Comment
UCD99060
Persicaria hydropiper
Frederica Bowcutt
1997-7-18
2174
Sonoma
Sugarloaf Ridge State Park. About 50 air miles N of San Francisco, 10 air miles E of Santa Rosa, 2.5 air miles NE of Kenwood and 18 air miles NW of Napa. Just south of midpoint between Mt. Hood and Red Mountain. Road on ridge West of Bear Ck.
365
Comment
UCD99066
Persicaria hydropiper
Beecher Crampton
1964-8-26
7179
Shasta
Castle Crag, 3 miles s. of Dunsmuir, Sacramento River.
Comment
UCD99077
Persicaria hydropiper
Malcolm A. Nobs; S. Galen Smith
1949-9-2
1750
Inyo
13.5 miles N of Bishop, 2 miles W of Highway 395, on Pine Creek Road.
Comment
CAS-BOT-BC258011
Persicaria hydropiper
Peter Rubtzoff
1973-8-15
7210
Sonoma
Russian River at Squaw Rock, 6 miles south of Hopland.
Comment
CAS-BOT-BC258014
Persicaria hydropiper
Peter Rubtzoff
1973-9-9
7310
Sonoma
Kenwood Marsh.
Comment
CAS-BOT-BC413688
Persicaria hydropiper
Geo. Hansen
1893-7-1
754
Amador
New York Falls
609
Comment
CAS-BOT-BC413689
Persicaria hydropiper
W. B. Andahl
1966-9-12
s.n.
Calaveras
L. Sandoz prop., Wilseyville
Comment
CAS-BOT-BC413690
Persicaria hydropiper
John Thomas Howell
1954-9-6
30086
Calaveras
3 miles se. of Angels Camp
Comment
CAS-BOT-BC413691
Persicaria hydropiper
Peter H. Raven
1954-9-2
8115
Lake
Bed of St. Helena Creek at Mirabel Park, 4.8 mi. s. of Middletown
Comment
CAS-BOT-BC413692
Persicaria hydropiper
A. E. LaRose
1974-9-25
s.n.
Marin
Pasture on Waldo Giacomini property, Point Reyes Station
Comment
CAS-BOT-BC413693
Persicaria hydropiper
Catherine Best
1985-9-15
1146
Placer
Sugar Pine Reservoir. About 6 miles north of Fosresthill
1158
Comment
CAS-BOT-BC413694
Persicaria hydropiper
Peter Rubtzoff
1970-9-15
6388
Sacramento
Off west side of Hwy. 99, 1 mi. north of Elk Grove Blvd. crossing. Ca. 2 mi. nw. of Elk Grove
Comment
CAS-BOT-BC413695
Persicaria hydropiper
Lowell Ahart
1985-10-19
5210
Sutter
About 1/8 mile south-east of the Dean Cabin, Dean Ranch, Sutter Buttes
274
Comment
CAS-BOT-BC413696
Persicaria hydropiper
John Thomas Howell
1981-10-13
54621
Sutter
Bobelaine Audubon Sanctuary, Feather River at mouth of Bear River
9
Comment
CAS-BOT-BC413697
Persicaria hydropiper
Mrs. H. C. Cantelow
1936-8-23
1690
Trinity
Scott Ranch, 3 mi. S. of Trinity Center, nr. irrigation ditch
Comment
CAS-BOT-BC413699
Persicaria hydropiper
Roxana Stinchfield
1915-8-5
21
Tuolumne
Bear Creek. Vicinity of Rawhide
Comment
CAS-BOT-BC413700
Persicaria hydropiper
John Thomas Howell
1961-9-22
36770
Butte
North Fork of Feather River, 10 miles from Oroville
Comment
CAS-BOT-BC413701
Persicaria hydropiper
John Thomas Howell
1959-9-20
34644
Butte
Eastern outskirts of Oroville
60
Comment
CAS-BOT-BC413702
Persicaria hydropiper
Lowell Ahart
1985-11-7
5234
Butte
On the bottom of the South Fork of the Feather River, about 300 yards north-west of the Ponderosa Dam. Near Ponderosa Dam, Lake Oroville
277
Comment
CAS-BOT-BC413703
Persicaria hydropiper
Lowell Ahart
1983-9-17
4437
Butte
About 1/4 mile south-east of Stirling City
1100
Comment
CAS-BOT-BC413704
Persicaria hydropiper
Lowell Ahart
1987-10-22
5921
Butte
Along Oroville Chico Highway (149), 1/10 mile north-west of Highway 70
76
Comment
CAS-BOT-BC413705
Persicaria hydropiper
Lowell Ahart
1982-10-11
3864
Butte
About 1/10 mile west of the Gray Lodge Headquarters, Gray Lodge, about 12 miles south-west of Gridley
35
Comment
CAS-BOT-BC413706
Persicaria hydropiper
Lowell Ahart
1982-10-6
3846
Butte
Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut
50
Comment
CAS-BOT-BC413707
Persicaria hydropiper
Lowell Ahart
1981-9-19
3177
Butte
Arch Rock Tunnel, Hwy. 70
550
Comment
CAS-BOT-BC413708
Persicaria hydropiper
G. L. Stebbins
1976-9-25
76263
El Dorado
At south side of American River, at junction of North and Middle Fork, immediately east of State Highway 49
176
Comment
CAS-BOT-BC413709
Persicaria hydropiper
John Thomas Howell
1969-9-12
46081
El Dorado
1 mile west Forest Genetics station
762
Comment
CAS-BOT-BC413710
Persicaria hydropiper
John Thomas Howell
1976-10-29
52270
El Dorado
Bottom of Folsom Lake at Brown's Ravine boat landing
121
Comment
CAS-BOT-BC413711
Persicaria hydropiper
Henry M. Pollard
1956-10-9
s.n.
Humboldt
Fig Tree Riffle at Woodson Mine, Klamath River, Orleans
Comment
CAS-BOT-BC413713
Persicaria hydropiper
Malcom A. Nobs; S. Galen Smith
1949-8-11
1336
Humboldt
Marsh at eastern shore of Stone Lagoon
Comment
CAS-BOT-BC413715
Persicaria hydropiper
Malcom A. Nobs; S. Galen Smith
1949-9-2
1750
Inyo
On Pine Creek road, 2 miles west of Highway 395, 13.5 miles north of Bishop
Comment
CAS-BOT-BC413717
Persicaria hydropiper
Peter Rubtzoff
1973-8-15
7210
Mendocino
Russian River at Squaw Rock, 6 miles south of Hopland
Comment
CAS-BOT-BC413718
Persicaria hydropiper
Gladys L. Smith
1983-9-7
8329
Mendocino
At edge of Mill Cr. at first bridge, Reeves Canyon north of Ukiah.
233
Comment
CAS-BOT-BC413719
Persicaria hydropiper
Clare R. Wheeler
1985-9-8
3764
Mendocino
Russian River. Ca. 2 miles upriver from Preston Bridge
103
Comment
CAS-BOT-BC413720
Persicaria hydropiper
Clare R. Wheeler
1982-9-27
3290
Mendocino
Rancheria Creek. Hwy. 128 & Fish Rock Road. 5 miles NW of Yorkville
243
Comment
CAS-BOT-BC413721
Persicaria hydropiper
Peter H. Raven
1954-8-27
7983
Nevada
W. of Greenhorn Creek
914
Comment
CAS-BOT-BC413722
Persicaria hydropiper
Peter H. Raven
1954-8-28
8038
Nevada
Flood plain of Greenhorn Creek
762
Comment
CAS-BOT-BC413723
Persicaria hydropiper
Peter H. Raven
1954-8-30
8065
Nevada
Near Red Dog
792
Comment
CAS-BOT-BC413724
Persicaria hydropiper
Gordon H. True
1965-10-6
2673
Nevada
East end of Omega Mine Road at Hiway 20 about 2 miles west of Bear Valley
1584
Comment
CAS-BOT-BC413725
Persicaria hydropiper
Gordon H. True
1968-8-26
4585
Nevada
Taylor crossing on Bear River ca. 2.5 miles west of Colfax, just west of Placer County line
Comment
CAS-BOT-BC413726
Persicaria hydropiper
Gordon H. True
1961-8-12
150
Nevada
G. H. True Ranch, 7 miles south-west of Grass Valley on McCourtney Road
548
Comment
CAS-BOT-BC413727
Persicaria hydropiper
Gordon H. True
1969-10-23
5162
Nevada
Wolf Creek at bridge ca. 1 mi. west of Higgins' Corner
426
Comment
CAS-BOT-BC413728
Persicaria hydropiper
Gordon H. True; J. T. Howell
1965-8-25
2549
Nevada
Scotts Flat Reservoir on Deer Creek about 5 miles east of Nevada City
944
Comment
CAS-BOT-BC413729
Persicaria hydropiper
Walter Knight; Irja Knight; John Thomas Howell
1966-7-28
1459
Plumas
Butterfly Botanical Area and Vicinity. In bed of Spanish Creek near confluence of Butterfly Creek
883
Comment
CAS-BOT-BC413730
Persicaria hydropiper
John Thomas Howell
1961-9-23
36847
Plumas
Indian Valley
1082
Comment
CAS-BOT-BC413731
Persicaria hydropiper
John Thomas Howell
1959-9-26
35071
Plumas
Feather River Canyon. Ca. 1.5 mi. W. of Belden
682
Comment
CAS-BOT-BC413732
Persicaria hydropiper
John Thomas Howell
1951-8-19
28164
Plumas
Near Belden
670
Comment
CAS-BOT-BC413733
Persicaria hydropiper
Lowell Ahart
1981-9-6
3069
Plumas
1 1/2 miles SW of Crescent Mills
1200
Comment
CAS-BOT-BC413734
Persicaria hydropiper
A. A. Heller
1916-7-19
12455
Shasta
5 miles south of Redding
Comment
CAS-BOT-BC413735
Persicaria hydropiper
A. A. Heller
1916-7-19
12455
Shasta
5 miles south of Redding
Comment
CAS-BOT-BC413736
Persicaria hydropiper
Malcom A. Nobs; S. Galen Smith
1949-7-19
1027
Shasta
Junction of Pit River and Hat Creek, Highway 299
Comment
CAS-BOT-BC413737
Persicaria hydropiper
Louis C. Wheeler
1934-9-20
3287
Siskiyou
Lumgrey Creek, Siskiyou Mts.
670
Comment
CAS-BOT-BC413738
Persicaria hydropiper
Louis C. Wheeler
1934-9-20
3287
Siskiyou
Klamath National Forest, Lumgrey Cr.
670
Comment
CAS-BOT-BC413739
Persicaria hydropiper
Louis C. Wheeler
1934-9-20
3287
Siskiyou
Klamath National Forest, Lumgrey Cr.
670
Comment
CAS-BOT-BC413740
Persicaria hydropiper
John Thomas Howell
1932-9-18
10779
Sonoma
Bank of slough draining Kenwood Marsh
Comment
CAS-BOT-BC413741
Persicaria hydropiper
John Thomas Howell
1932-9-18
10779
Sonoma
Bank of slough draining Kenwood Marsh
Comment
CAS-BOT-BC413742
Persicaria hydropiper
Peter Rubtzoff
1970-9-17
6390
Sonoma
Laguna de Santa Rosa north of Sebastopol, nr. Occidental Rd. crossing
Comment
CAS-BOT-BC413743
Persicaria hydropiper
Peter Rubtzoff
1968-8-31
5951
Sonoma
Russian River bottom at Forest Hills, 5.5 mi. east of Guerneville
Comment
CAS-BOT-BC413744
Persicaria hydropiper
Peter Rubtzoff
1968-8-18
5930
Sonoma
Laguna de Santa Rosa east of Graton, betw. Occidental and Guerneville roads
Comment
CAS-BOT-BC413745
Persicaria hydropiper
Peter Rubtzoff
1966-9-25
5821
Sonoma
Laguna de Santa Rosa east of Graton, betw. Occidental and Guerneville roads
Comment
CAS-BOT-BC413746
Persicaria hydropiper
Peter Rubtzoff
1966-6-5
s.n.
Sonoma
Laguna de Santa Rosa east of Graton, betw. Occidental and Guerneville rds.
Comment
HSC86712
Persicaria hydropiper
Clare R. Wheeler
1982-9-27
3290
Mendocino
Rancheria Creek, Hwy. 128 and Fish Rock Rd., 5 mi. NW of Yorkville
244
Comment
HSC86713
Persicaria hydropiper
Clare R. Wheeler
1985-9-8
3764
Mendocino
Russian River 2 mi. up river from Preston Bridge
103
Comment
SBBG41737
Persicaria hydropiper
P. Rubtzoff
1970-9-15
6388
Sacramento
W side of Hwy 99, ca. 3 mi NW of Elk Grove, 1 mi N of Elk Grove Blvd crossing
Comment
SEINET12886980
Persicaria hydropiper
S. F. Blake
1910-1
679
Unknown
Comment
SEINET12886981
Persicaria hydropiper
A. A. Heller
1916-1
12455
Unknown
Comment
UCD143812
Persicaria hydropiper
Beecher Crampton
1983-9-22
s.n.
Yolo
UC Davis.
Comment
UCD18458
Persicaria hydropiper
Monte Bell, FA
1988-10-1
s.n.
Shasta
Shasta County.
Comment
UCD99057
Persicaria hydropiper
Perry S. Allen
1969-7-24
473
Stanislaus
A few hundred feet upstream from the mouth of Lower Dominici Creek, southwest of La Grange.
Comment
UCD99063
Persicaria hydropiper
Beecher Crampton
1961-10-31
6075
Sacramento
1 mile south of Fair Oaks along the American River.
Comment
UCD99070
Persicaria hydropiper
G. F. Hrusa
1992-8-26
9548
San Joaquin
Caswell Memorial State Park, Oxbow Lake.
Comment
UCD99074
Persicaria hydropiper
Malcolm A. Nobs; S. Galen Smith
1949-7-19
1027
Shasta
Shasta County.: At junction of Pitt River and Hat Creek at Highway 299.
Comment
CAS-BOT-BC334485
Persicaria hydropiperoides
P. DaSilva; A. Young; B. Traut; S. Tsiu; J. Woods
2013-8-10
13154
Marin
Marin Municipal Water District Lands: Mount Tamalpais. East of Lagunitas Dam, between Lake Lagunitas and Lakeview Road, across from culvert LV-04
Comment
CAS-BOT-BC418832
Persicaria hydropiperoides
Brian Atwater
1978-10-24
BA- 165
Contra Costa
Between Bethel Island and Holland Tract
Comment
CAS-BOT-BC418834
Persicaria hydropiperoides
Clare B. Hardham
1957-9-3
2586
Kern
Kern Co. Park
Comment
CAS-BOT-BC418836
Persicaria hydropiperoides
H. P. Chandler
1912-8-6
1142
Mariposa
Yosemite Valley
1210
Comment
CAS-BOT-BC418837
Persicaria hydropiperoides
H. P. Chandler
1912-8-6
1142
Mariposa
Yosemite Valley
1210
Comment
CAS-BOT-BC418839
Persicaria hydropiperoides
Malcom A. Nobs; S. Galen Smith
1948-7-14
120
Merced
Pond 1/4 mile south of Holister Club road. Gustine Gun Club, about 4 miles southeast of Gustine
Comment
CAS-BOT-BC418842
Persicaria hydropiperoides
Le Roy Abrams
1901-6-11
1754
Orange
New River near Long Beach
Comment
CAS-BOT-BC418843
Persicaria hydropiperoides
Carl B. Wolf
1932-6-13
3719
Orange
Fullerton, Malvern & Nicholas Aves.
53
Comment
CAS-BOT-BC418844
Persicaria hydropiperoides
J. Ewan
1931-10-3
5211
Riverside
Santa Ana River 4 mi. N.W. of Corona
Comment
CAS-BOT-BC418845
Persicaria hydropiperoides
Philip A. Munz
1935-10-21
14652
Riverside
Santa Ana River, below Rincon
Comment
CAS-BOT-BC418846
Persicaria hydropiperoides
Philip A. Munz
1935-10-21
14652
Riverside
Santa Ana River, below Rincon
Comment
CAS-BOT-BC418851
Persicaria hydropiperoides
V. F. Hesse
1958-10-16
2552
Santa Cruz
Pinto Lake, near Freedom
60
Comment
CAS-BOT-BC418852
Persicaria hydropiperoides
V. F. Hesse
1958-10-16
2552
Santa Cruz
Pinto Lake, near Freedom
609
Comment
CAS-BOT-BC418853
Persicaria hydropiperoides
V. F. Hesse
1960-8-30
2552
Santa Cruz
Pinto Lake, near Freedom
60
Comment
CAS-BOT-BC418857
Persicaria hydropiperoides
Lowell Ahart
1977-8-31
s.n.
Yuba
2 miles north-east of Marysville
30
Comment
CAS-BOT-BC418860
Persicaria hydropiperoides
Lowell Ahart
1987-9-4
5881
Butte
On the bottom of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville
67
Comment
CAS-BOT-BC418862
Persicaria hydropiperoides
R. Bacigalupi; I. L. Wiggins; R. S. Ferris
1941-7-29
2688
Fresno
2 mi. west of Tranquility Junction on State Highway 180
Comment
CAS-BOT-BC418863
Persicaria hydropiperoides
David D. Keck
1932-9-28
1845
Fresno
China Slough, creek through Centerville
Comment
CAS-BOT-BC418864
Persicaria hydropiperoides
David D. Keck
1932-9-28
1845
Fresno
China Slough, creek through Centerville
Comment
CAS-BOT-BC418865
Persicaria hydropiperoides
Roxana S. Ferris; R. Bacigalupi
1951-8-24
12435
Fresno
On General Grant Grove highway just east of Centerville
Comment
CAS-BOT-BC418866
Persicaria hydropiperoides
Roxana S. Ferris; R. Bacigalupi
1951-8-24
12435
Fresno
On General Grant Grove highway just east of Centerville
Comment
CAS-BOT-BC418871
Persicaria hydropiperoides
J. W. Blankinship
1928-9-17
s.n.
Lake
Lakeport
Comment
CAS-BOT-BC418872
Persicaria hydropiperoides
Le Roy Abrams
1901-8-1
2187
Los Angeles
Ballona Creek
Comment
CAS-BOT-BC418873
Persicaria hydropiperoides
LeRoy Abrams
1902-6-13
2530
Los Angeles
Ballona Creek near Mesmer
Comment
CAS-BOT-BC418874
Persicaria hydropiperoides
LeRoy Abrams
1904-9-2
4186
Los Angeles
Los Angeles River, Los Angeles
Comment
CAS-BOT-BC418875
Persicaria hydropiperoides
A. C. Sanders; T. B. Salvato; Mitch Provance
2009-5-27
36952
Los Angeles
San Gabriel Valley: confluence of San Gabriel River and Walnut Creek, between El Monte and Baldwin Park, S of I-10 Fwy and north of Valley Blvd, W of I-605 Fwy, under SCE powerlines.
88
Comment
CAS-BOT-BC418877
Persicaria hydropiperoides
John Thomas Howell
1946-6-20
22107
Marin
4 miles n. of Bolinas
Comment
CAS-BOT-BC418878
Persicaria hydropiperoides
John Thomas Howell
1945-10-14
s.n.
Marin
Olema Marshes
Comment
CAS-BOT-BC418879
Persicaria hydropiperoides
John Thomas Howell
1946-9-20
s.n.
Marin
Laguna in Chileno Valley
Comment
CAS-BOT-BC418880
Persicaria hydropiperoides
Doris K. Kildale
1928-7-18
5683
Mendocino
1 mile north of Willits on Redwood highway
Comment
CAS-BOT-BC418882
Persicaria hydropiperoides
Gladys L. Smith
1978-8-15
5044
Mendocino
Behind Pudding Creek Dam, built in 1953, north edge of Fort Bragg
15
Comment
CAS-BOT-BC418884
Persicaria hydropiperoides
S. B. Parish
1917-10-15
11616
San Bernardino
San Bernardino Valley
304
Comment
CAS-BOT-BC418885
Persicaria hydropiperoides
S. B. Parish
1901-9-10
5099
San Bernardino
Vicinity of San Bernardino
762
Comment
CAS-BOT-BC418886
Persicaria hydropiperoides
J. Ewan
1931-10-3
5205
San Bernardino
Chino Creek, 2 miles south of Chino
Comment
CAS-BOT-BC418887
Persicaria hydropiperoides
J. Ewan
1931-10-3
5206
San Bernardino
Chino Creek, 2 miles south of Chino
Comment
CAS-BOT-BC418888
Persicaria hydropiperoides
Brian Atwater
1978-8-24
BA- 106
San Joaquin
Between Rindge [Ridge] Tract and Wright Tract
Comment
CAS-BOT-BC418890
Persicaria hydropiperoides
Ira L. Wiggins
1940-8-12
9532 a
San Joaquin
1 mi. NW. of San Joaquin River bridge on U. S. Highway 50
Comment
CAS-BOT-BC418892
Persicaria hydropiperoides
John Thomas Howell
1929-9-21
4417
San Joaquin
Holt
Comment
CAS-BOT-BC418895
Persicaria hydropiperoides
Greg de Nevers
1987-7-10
8237
Sonoma
Pepperwood Ranch Natural Preserve, 3450 Franz Valley Rd., Santa Rosa
400
Comment
CAS-BOT-BC418896
Persicaria hydropiperoides
Greg de Nevers
1987-7-10
8237
Sonoma
Pepperwood Ranch Natural Preserve, 3450 Franz Valley Rd., Santa Rosa
400
Comment
CAS-BOT-BC418900
Persicaria hydropiperoides
Peter Rubtzoff
1969-8-24
6144
Sonoma
On River Road 3 mi. west of Fulton
Comment
CAS-BOT-BC418902
Persicaria hydropiperoides
Peter Rubtzoff
1960-9-14
4535
Sonoma
Laguna de Santa Rosa east of Graton (betw. Occidental and Guerneville roads)
Comment
CAS-BOT-BC418903
Persicaria hydropiperoides
Peter Rubtzoff
1954-8-10
1675
Sonoma
Bodega Head Marsh
Comment
CAS-BOT-BC418904
Persicaria hydropiperoides
Peter Rubtzoff
1958-8-31
3953
Sonoma
Atascadero Creek Marsh
Comment
CAS-BOT-BC418905
Persicaria hydropiperoides
Peter Rubtzoff
1960-9-14
4526
Sonoma
Laguna de Santa Rosa east of Graton (betw. Occidental and Guerneville roads)
Comment
CAS-BOT-BC418906
Persicaria hydropiperoides
Peter Rubtzoff
1960-9-17
4565
Sonoma
Laguna de Santa Rosa area northeast of Graton (near Laguna Road)
Comment
CAS-BOT-BC418908
Persicaria hydropiperoides
Peter Rubtzoff
1958-7-19
3777
Sonoma
Laguna de Santa Rosa east of Sebastopol
Comment
CAS-BOT-BC418909
Persicaria hydropiperoides
Peter Rubtzoff
1958-8-31
3954
Sonoma
Atascadero Creek Marsh
Comment
CAS-BOT-BC418911
Persicaria hydropiperoides
Peter Rubtzoff
1963-10-5
5289
Sonoma
Laguna de Santa Rosa east of Graton
Comment
CAS-BOT-BC418912
Persicaria hydropiperoides
Peter Rubtzoff
1960-9-14
4540
Sonoma
Laguna de Santa Rosa east of Graton (betw. Occidental and Guerneville roads)
Comment
CAS-BOT-BC418913
Persicaria hydropiperoides
Peter Rubtzoff
1961-9-6
4739
Sonoma
Laguna de Santa Rosa area northeast of Graton
Comment
CAS-BOT-BC418915
Persicaria hydropiperoides
Peter Rubtzoff
1963-10-5
5290
Sonoma
Laguna de Santa Rosa east of Graton
Comment
CAS-BOT-BC418916
Persicaria hydropiperoides
Peter Rubtzoff
1956-9-15
2897
Sonoma
Atascadero Creek Marsh
Comment
CAS-BOT-BC418917
Persicaria hydropiperoides
Peter Rubtzoff
1958-8-9
3859
Sonoma
Laguna de Santa Rosa north of Sebastopol (nr. Occidental Road)
Comment
CAS-BOT-BC418918
Persicaria hydropiperoides
Peter Rubtzoff
1958-8-16
3880
Sonoma
Laguna de Santa Rosa north of Sebastopol (nr. Occidental Road)
Comment
CAS-BOT-BC418919
Persicaria hydropiperoides
Peter Rubtzoff
1958-8-23
3928
Sonoma
Laguna de Santa Rosa east of Cunningham (nr. Llano Rd.)
Comment
CAS-BOT-BC418921
Persicaria hydropiperoides
Peter Rubtzoff
1956-9-15
2907
Sonoma
Atascadero Creek Marsh
Comment
CAS-BOT-BC418924
Persicaria hydropiperoides
Peter Rubtzoff
1960-6-9
4476
Sonoma
Laguna de Santa Rosa area northeast of Graton, near the Laguna Road
Comment
CHSC106098
Persicaria hydropiperoides
Lowell Ahart; John Dittes
2010-7-30
16933
Siskiyou
Along the south edge of the Shasta River, about 100 yards east of the East Louie Road Bridge, Shasta Big Springs Ranch, 1.6 miles (air) southwest of Big Springs Lake, 4.6 miles (air) northwest of Dwinnel Dam, 5.7 miles (air) southeast of Grenada.
716
Comment
CHSC112667
Persicaria hydropiperoides
Lowell Ahart
2013-10-19
19149
Glenn
On the east side of the backwater, along the west side of the Sacramento River, about 300 yards north of the bridge, west of Butte City.
26
Comment
CHSC36528
Persicaria hydropiperoides
L. Ahart
1982-8-22
3748
Butte
Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut. On wet sand along the edge of North Honcut Creek.
50
Comment
CHSC37070
Persicaria hydropiperoides
L. Ahart
1982-10-6
3847
Butte
Peter Ahart Ranch, ca. 3 mi ne of Honcut. Along edges of North Honcut Creek.
50
Comment
CHSC43266
Persicaria hydropiperoides
Lowell Ahart
1987-9-4
5881
Butte
On the bottom of a drying pond, on the bottom of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville.
67
Comment
CHSC45379
Persicaria hydropiperoides
Vernon Oswald
1983-10-10
1063
Butte
Bidwell State Park on the e side of the Sacramento R. w of Chico. Growing in shallow water along the edges of Tyler Slough at the Indian Fishery located at the jct. of W. Sacramento Ave. and River Rd.
Comment
CHSC46202
Persicaria hydropiperoides
L. P. Janeway
1986-9-20
1870
Butte
Seasonally draining side creek on NW side of Little Chico Cr, near River Rd ca 2 mi S of Chico River Rd.
36
Comment
CHSC51525
Persicaria hydropiperoides
M. Bailey
1990-10-16
418
Butte
North side of man-made pond #3, Butte College campus.
Comment
CHSC55244
Persicaria hydropiperoides
Lowell Ahart
1991-10-14
6715
Butte
On the sides of a reservoir, Joie Osgood Ranch, about 2 miles east of Honcut.
45
Comment
CHSC55245
Persicaria hydropiperoides
Lowell Ahart
1991-9-14
6716
Butte
On the sides of a reservoir, Joie Osgood Ranch, about 2 miles east of Honcut.
45
Comment
CHSC60915
Persicaria hydropiperoides
Vernon H. Oswald
1993-6-23
5569
Glenn
Sacramento National Wildlife Refuge located ca. 7 mi S of Willows, along the E side of Cell 2, Pool 10. Locally abundant emergent in a beck water of Logan Creek.
21
Comment
CHSC66674
Persicaria hydropiperoides
Vernon H. Oswald; Lowell Ahart
1996-7-22
8082
Butte
Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Abundant in wet mud on the bottom of a drying slough on the W side of the levee at the SW corner of Tract 6, Sanctuary I.
30
Comment
CHSC66898
Persicaria hydropiperoides
Vernon H. Oswald
1996-10-22
8302
Butte
Northern Sacramento Valley. Oroville Wildlife Area on the NW side of the Feather River just upstream from the outlet of Thermalito Afterbay.
33
Comment
CHSC84592
Persicaria hydropiperoides
Lowell Ahart; John Dittes
2003-9-17
10589
Tehama
On the south edge of a gravel bar on the south side of Deer Creek, about 400 yards east of Highway 99, about 5 miles (air) southeast of Los Molinos.
60
Comment
CHSC92662
Persicaria hydropiperoides
D. Isle
2004-7-8
1378
Glenn
Mendocino National Forest--North Coast Ranges. North of Princeton on edge W of Sacramento River.
Comment
CHSC99894
Persicaria hydropiperoides
Lowell Ahart; John Dittes
2008-8-21
15245
Merced
On the bottom of Dutchman Slough, about 220 yards south of the wire gate on the south side of Sandy Mush Road, 3.7 miles west of Highway 99, about 8.5 miles south-southeast of Merced.
53
Comment
HSC86711
Persicaria hydropiperoides
Gladys L. Smith
1982-7-2
7615
Mendocino
Along Hwy. 101 at Little Lake Valley Lagoon, 2 mi. N of Willits
427
Comment
JEPS120312
Persicaria hydropiperoides
Jake Ruygt
1992-8-6
3122
Napa
Yountville Ecological Reserve, Yountville Cross Road, Napa River. Yountville 7.5' Quad.
Comment
JEPS120659
Persicaria hydropiperoides
Lowell Ahart
2013-10-19
19149
Glenn
On the east side of the backwater, along the west side of the Sacramento River, about 300 yards north of the bridge, west of Butte City.
Comment
JEPS125632
Persicaria hydropiperoides
Daniel Slakey with CNPS Volunteers
2015-9-12
226
Contra Costa
Browns Island, northern part of Crooked Slough.
Comment
RSA0064386
Persicaria hydropiperoides
LeRoy Gross, Joy England, Naomi S. Fraga
2015-5-6
7328
Ventura
USC/Best Property; Off Pyle Road, south of Highway 126. Almost halfway between Santa Paula and Fillmore.
99
Comment
RSA0069598
Persicaria hydropiperoides
LeRoy Gross, Sarah DeGroot, Cheryl Sevilla
2015-4-9
7064
Ventura
Loughman/Peto Family Trust Properties; Along the river, just east of Santa Paula. End of S. Hallock Drive, south of Highway 126.
82
Comment
RSA0083043
Persicaria hydropiperoides
Sarah J. De Groot, Noravit Chumchim
2015-7-15
7454
Ventura
The Nature Conservancy Banman (Prairie Pacific) Property. Santa Clara River floodplain east-southeast of Santa Paula, east of South Mountain Road, northwest of South Mountain, south of Sulphur Mountain/Santa Paula Ridge,, south of Highway 126. Oak Ridge Fault zone.
73
Comment
SBBG125898
Persicaria hydropiperoides
R. G. Swinney
2008-5-30
8895
Los Angeles
San Gabriel Cyn at El Encanto, W bank of the river
256
Comment
SBBG126174
Persicaria hydropiperoides
A. C. Sanders with T. B. Salvato, M. Provance
2009-5-27
36951
Los Angeles
confluence of San Gabriel River and Walnut Crk, between El Monte and Baldwin Park, S of I-10 Fwy and N of Valley Blvd, W of I-605 Fwy, under SCE powerlines
83
Comment Read comments Mar 24 2014
SBBG132049
Persicaria hydropiperoides
S. J. DeGroot, N. Chumchim
2015-7-15
7454
Ventura
Santa Clara River floodplain ESE of Santa Paula, E of S Mtn Rd, NW of S Mtn; Nature Conservancy Banman (Prairie Pacific) Property
73
Comment
SBBG1697
Persicaria hydropiperoides
C. B. Hardham
1957-9-3
2586
Kern
park near Bakersfield, edge of Kern River
Comment
SBBG20596
Persicaria hydropiperoides
E. C. Twisselmann
1963-11-22
9134
Madera
San Joaquin River, just E of Firebaugh
44
Comment
SD123635
Persicaria hydropiperoides
Peter Rubtzoff
1960-9-14
4526
Sonoma
Laguna de Santa Rosa east of Graton, (betw. Occidental and Guerneville rds.)
Comment
SD197887
Persicaria hydropiperoides
A. C. Sanders
2004-6-10
28100
San Diego
Carlsbad, Agua Hedionda Ecological Reserve, near El Camino Real and Cannon Rd. along lower Agua Hedionda Creek.
9
Comment
SD207428
Persicaria hydropiperoides
Stacy Anderson
2009-6-25
114
San Diego
Ramona, Cleveland National Forest, SE of San Diego Country Estates, 1.4 mi E of S end of Thornbush Rd, W of Cedar Creek Falls, N side of creek
292
Comment
SD227880
Persicaria hydropiperoides
Scott D. White
1997-5-14
5125
Los Angeles
Big Tujunga Wash: Sunland-Tujunga area; alluvial fan below San Gabriel Mts. SW of I-210 Freeway, E of Hansen Dam and N of Wentworth St. USGS 7.5' Sunland quad.
320
Comment
SD230270
Persicaria hydropiperoides
Louis C. Wheeler
1969-10-12
12355
San Bernardino
San Gabriel Mountains: Glen Helen Park, Cajon Canyon.
Comment
SD231420
Persicaria hydropiperoides
Scott D. White, Matt Carlton
2003-11-20
9868
Orange
Santa Ana Mountain foothills: San Juan Creek in San Juan Capistrano.
24
Comment
SD237571
Persicaria hydropiperoides
A. C. Sanders
2009-11-6
37218
Los Angeles
South Coast: Madrona Marsh, Torrance (Torrance 7.5'Q)
24
Comment
SD241151
Persicaria hydropiperoides
George K. Helmkamp, E. A. Helmkamp
2011-10-13
18410
El Dorado
Northern Sierra Nevada Mountains Foothills: Forebay Road, 8.1 miles northwest of Pollock Pines at the south side of the bridge over the South Fork American River (Pollock Pines 7.5'Q)
611
Comment
SD253531
Persicaria hydropiperoides
R. G. Swinney
2011-11-3
15979
Los Angeles
San Gabriel Mountains: Little Santa Anita Canyon, Fkirst Water, 1.7 miles up canyon from Mt. Wilson Trailhead, north of Sierra Madre.
622
Comment
SJSU12000
Persicaria hydropiperoides
N. A. Hopkins
1976-6-8
785
Santa Cruz
N side of Pinto L c. 3 mi N of Watsonville
Comment
SJSU5986
Persicaria hydropiperoides
C. W. Sharsmith
1972-6-24
7807
Sonoma
Laguna de Santa Rosa, N of Sebastopol, E of Graton
Comment
UCD149578
Persicaria hydropiperoides
Stephen P. Rae; Ayzik Solomeshch
2006-5-30
s.n.
Napa
On the north side of Soscol Ridge, south of the city of Napa, ca. 3/4 km east of Highway 121, on the south side of Soscol Creek.
25
Comment
UCD150369
Persicaria hydropiperoides
William Anderson
1963-9-27
s.n.
Butte
Sanborn Slough. Tule Goose Gun Club.
17
Comment
UCD162384
Persicaria hydropiperoides
Chuck Hughes
2015-5-27
430
Amador
About 1 mile northwest of intersection of Highway 16 and Highway 124.
242
Comment
UCD54151
Persicaria hydropiperoides
Marta Laskowski
1993-8-8
10- 325
Sacramento
Cosumnes River Preserve Plant Inventory.
Comment
UCD99319
Persicaria hydropiperoides
Herbert L. Mason; Verne Grant
1946-8-14
13027
Butte
Sacramento Outing Club.
Comment
UCD99327
Persicaria hydropiperoides
G. L. Webster; G. L. Stebbins Jr.
1967-8-22
7529
Sutter
Ca. 1 mile W of 'The Berry Patch' (6 miles W of Pennington).
15
Comment
CAS-BOT-BC418831
Persicaria hydropiperoides
Virginia I. Dains; Walter Knight
1986-8-8
5473
Contra Costa
Jct Rock S1 & Werner Cut
Comment
CAS-BOT-BC418833
Persicaria hydropiperoides
Carl B. Wolf
1928-8-11
3262
Inyo
5 miles so. of Bishop
1350
Comment
CAS-BOT-BC418835
Persicaria hydropiperoides
W. I. Follett; Evelyn B. Follett
1948-10-29
s.n.
Kings
Kings River 7 miles north of Hanford
Comment
CAS-BOT-BC418838
Persicaria hydropiperoides
Peter H. Raven
1961-8-27
16614
Merced
Along Merced River near bridge below Snelling
Comment
CAS-BOT-BC418840
Persicaria hydropiperoides
Malcom A. Nobs; S. Galen Smith
1948-8-9
8302
Merced
1 mile west of Los Banos
Comment
CAS-BOT-BC418841
Persicaria hydropiperoides
John Thomas Howell
1927-7-5
2653
Orange
Near Horseshoe Bend, Santa Ana River bottom, Santa Ana Canon [Canyon]
152
Comment
CAS-BOT-BC418847
Persicaria hydropiperoides
Ira L. Wiggins
1985-9-28
22299
San Mateo
Bed of San Francisquito Creek, N side of creek bed, just above Pop [Pope] Street bridge, Menlo Park
Comment
CAS-BOT-BC418848
Persicaria hydropiperoides
Ira L. Wiggins
1985-9-28
22298
San Mateo
Bed of San Francisquito Creek, N side of creek bed, just above Pope Street bridge, Menlo Park
Comment
CAS-BOT-BC418849
Persicaria hydropiperoides
Roxana S. Ferris
1920-9-3
2047
San Mateo
Santa Cruz Mountain Peninsula. 2nd Mud Lake, Coal Mine Ridge
Comment
CAS-BOT-BC418850
Persicaria hydropiperoides
W. R. Dudley
1906-9-1
s.n.
Santa Clara
Santa Cruz Mountain Peninsula. Reservoir near Raymonds
Comment
CAS-BOT-BC418854
Persicaria hydropiperoides
Lowell Ahart
1981-9-10
3133
Sutter
South side of South Butte, Sutter Buttes
450
Comment
CAS-BOT-BC418855
Persicaria hydropiperoides
William Anderson
1964-10-10
s.n.
Sutter
Field & Tule Gun Club
Comment
CAS-BOT-BC418856
Persicaria hydropiperoides
Ira L. Wiggins
1972-9-17
21946
Tuolumne
Vacant lot on N side of Post Office, Twain Harte
1127
Comment
CAS-BOT-BC418858
Persicaria hydropiperoides
Lowell Ahart
1982-8-22
3748
Butte
Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut
50
Comment
CAS-BOT-BC418859
Persicaria hydropiperoides
Lowell Ahart
1982-10-6
3847
Butte
Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut
50
Comment
CAS-BOT-BC418861
Persicaria hydropiperoides
Herbert L. Mason; Verne Grant
1946-8-14
13027
Butte
Butte Sink. On Sacramento Outing Club
Comment
CAS-BOT-BC418867
Persicaria hydropiperoides
Lyman Benson
1931-8-31
2892
Lake
Soda Bay, Middle N Coast Range, Clear Lake
426
Comment
CAS-BOT-BC418868
Persicaria hydropiperoides
Agnes M. Bowman
1901-9-1
s.n.
Lake
Lakeport
Comment
CAS-BOT-BC418869
Persicaria hydropiperoides
Agnes M. Bowman
1901-9-7
s.n.
Lake
Lakeport
Comment
CAS-BOT-BC418870
Persicaria hydropiperoides
Malcom A. Nobs; S. Galen Smith
1949-9-9
1857 a
Lake
At Scott Creek, Bridge 1431, northwestern end of Clear Lake
Comment
CAS-BOT-BC418876
Persicaria hydropiperoides
Doreen Smith
1997-7-6
s.n.
Marin
5-Brooks Pond, Pt. Reyes National Seashore
Comment
CAS-BOT-BC418881
Persicaria hydropiperoides
Clare R. Wheeler
1978-9-27
689
Mendocino
Mendocino National Forest. Howard Lake
1219
Comment
CAS-BOT-BC418883
Persicaria hydropiperoides
Gladys L. Smith
1982-7-2
7615
Mendocino
Along Rte. 101 at Little Lake Valley, 2.0 mi. n. of Willits
426
Comment
CAS-BOT-BC418889
Persicaria hydropiperoides
L. R. Abrams
1920-9-30
7786
San Joaquin
Near Bank
Comment
CAS-BOT-BC418891
Persicaria hydropiperoides
John Thomas Howell
1929-9-21
4418
San Joaquin
Holt
Comment
CAS-BOT-BC418893
Persicaria hydropiperoides
John Thomas Howell
1946-8-17
22856
Sonoma
The Laguna north of Sebastopol
Comment
CAS-BOT-BC418894
Persicaria hydropiperoides
Catherine Best
1981-8-22
s.n.
Sonoma
On Stoetz Lane about 2 miles northeast of Occidental
Comment
CAS-BOT-BC418897
Persicaria hydropiperoides
Peter Rubtzoff
1951-7-1
349
Sonoma
Pitkin Marsh, near Forestville. North of the Lower Marsh
Comment
CAS-BOT-BC418898
Persicaria hydropiperoides
Peter Rubtzoff
1951-9-2
711
Sonoma
Pitkin Marsh, near Forestville. North of the Lower Marsh
Comment
CAS-BOT-BC418899
Persicaria hydropiperoides
Peter Rubtzoff
1951-7-1
349
Sonoma
Pitkin Marsh, near Forestville. North of the Lower Marsh
Comment
CAS-BOT-BC418901
Persicaria hydropiperoides
Peter Rubtzoff
1964-8-20
5471
Sonoma
1 mi. south-east of Jenner (nr. crossing of Hwys. 1 & 12)
Comment
CAS-BOT-BC418907
Persicaria hydropiperoides
Peter Rubtzoff
1958-7-20
3789
Sonoma
Laguna de Santa Rosa northeast of Graton (nr. Guerneville Road)
Comment
CAS-BOT-BC418910
Persicaria hydropiperoides
Peter Rubtzoff
1955-8-27
2099
Sonoma
Bennett Mtn. Lake
Comment
CAS-BOT-BC418914
Persicaria hydropiperoides
Peter Rubtzoff
1960-9-17
4569
Sonoma
Laguna de Santa Rosa near Trenton (south of Woolsey Road)
Comment
CAS-BOT-BC418920
Persicaria hydropiperoides
Peter Rubtzoff
1961-7-22
4665
Sonoma
Bennett Mtn. Lake
Comment
CAS-BOT-BC418922
Persicaria hydropiperoides
Peter Rubtzoff
1958-9-6
3968
Sonoma
Laguna de Santa Rosa north of Cunningham (nr. Todd Road)
Comment
CAS-BOT-BC418923
Persicaria hydropiperoides
Peter Rubtzoff
1963-9-1
5248
Sonoma
Bennett Mtn. Lake
Comment
CAS-BOT-BC418925
Persicaria hydropiperoides
Peter Rubtzoff
1958-8-17
3888
Sonoma
Laguna de Santa Rosa northeast of Graton (nr. Guerneville Road)
Comment
HSC89764
Persicaria hydropiperoides
Clare R. Wheeler
1978-9-27
689
Mendocino
Mendocino National Forest, Howard Lake
1220
Comment
SD99429
Persicaria hydropiperoides
Peter Rubtzoff
1954-8-10
1675
Sonoma
Bodega Head Marsh, open marshy ground
Comment
SEINET12887236
Persicaria hydropiperoides
S. B. Parish
1891-1
Unknown
Comment
SEINET12887238
Persicaria hydropiperoides
L. R. Abrams
1902-1
2530
Unknown
Comment
SEINET12887240
Persicaria hydropiperoides
I. M. Johnston
1907-1
1962
Unknown
Comment
SEINET12887241
Persicaria hydropiperoides
S. F. Blake
1910-1
863
Unknown
Comment
UC2027897
Persicaria hydropiperoides
Barbara Ertter
1996-9-19
15295
Contra Costa
Antioch Marina, edge of delta.
Comment
UCD62138
Persicaria hydropiperoides
J. Buck
2000-7-1
113
Sacramento
SACRAMENTO COUNTY: Cosumnes River Preserve, Willow Slough.
Comment
UCD99079
Persicaria hydropiperoides
Frederica Bowcutt
1993-7-3
1671
Sacramento
Delta Meadows River Park. About 25 air miles S of Sacramento, 10 air miles W of Galt, and 1 air mile NE of Walnut Grove. Immed. E of Locke, in the Sacramento River Delta, N of the Delta Cross Channel. At end of levee road on old Southern Pacific Railroad right-of-way along side slough off of Snodgrass Slough.
0
Comment
UCD99086
Persicaria hydropiperoides
Frederica Bowcutt
1993-7-16
1709
Sacramento
Delta Meadows River Park. About 25 air miles S of Sacramento, 10 air miles W of Galt, and 3 air mile NE of Walnut Grove. 2 air miles NE of Locke, in the Sacramento River Delta, just S of Twin Cities Bridge. On western perimeter of northern most island in park in Snodgrass Slough.
0
Comment
UCD99311
Persicaria hydropiperoides
Frederica Bowcutt; Fred Hrusa and Sally Wagner
1992-7-18
9229
Sacramento
Delta Meadows River Park. About 25 air miles S of Sacramento, 10 air miles W of Galt, and 1 air mile NE of Walnut Grove. Immediately E of Locke, in Sacramento River Delta, N of the Delta Cross Channel.
0
Comment
UCD99313
Persicaria hydropiperoides
James Dilley
1997-4-5
s.n.
Los Angeles
The Sepulvida Basin in the San Fernando Valley, 1/8 mile north of the dam.
Comment
UCD99316
Persicaria hydropiperoides
P. B. Kennedy
1921-7-9
s.n.
Merced
Near Santa Rita Island, San Joaquin Valley.
Comment
UCD99321
Persicaria hydropiperoides
Malcolm A. Nobs; S. Galen Smith
1949-9-9
1857 a
Lake
Scott Creek, Bridge 1431, northwestern end of Clear Lake.
Comment
UCD99323
Persicaria hydropiperoides
Peter H. Raven
1961-8-27
16614
Merced
Along Merced River near bridge below Snelling.
Comment
UCD99325
Persicaria hydropiperoides
Larry Reynolds
1984-5-18
12
Sacramento
1/2 mi S of Hwy 50 at Scott Rd.
91
Comment
UCSB57136
Persicaria hydropiperoides
Marsh, G.
1975-7-28
Orange
Huntington Beach; East Garden Grove-Wintersburg Flood Control Channel (no.C05); stream bank just N of Warner St. bridge crossing
Comment
UCSC007145
Persicaria hydropiperoides
Randall Morgan
2004-9-19
4329
Santa Cruz
Watsonville, Harkin
Comment
UCSC008682
Persicaria hydropiperoides
Randall Morgan
2004-9-19
4329 B
Santa Cruz
Harkins Slough
Comment
CDA11697
Polygonum hydropiper
G. F. Hrusa
1990-10-4
8247
Sacramento
Natoma Unit-Folsom Lake State Rec. Area; Banks of Willow Creek at the Willow Creek vehicle access.
Comment
CDA11698
Polygonum hydropiper
G. F. Hrusa
1990-10-4
8249
Sacramento
Natoma Unit-Folsom Lake State Rec. Area; Banks of Willow Creek at the Willow Creek vehicle access.
Comment
CDA12488
Polygonum hydropiper
G. F. Hrusa
1990-9-4
8208
Sacramento
Natoma Unit-Folsom Lake State Rec. Area; Upper end of estuary of first canyon to S of American River Bluffs.
Comment
CDA2786
Polygonum hydropiper
L. Ahart, J. Dittes
2003-9-17
10589
Tehama
On the south side of Deer Creek, about 400 yards east of Highway 99, about 5 miles (air) southeast of Los Molinos.
Comment
CDA30222
Polygonum hydropiper
M. K. Beyers, I. Shepardson
2009-9-12
234
Mendocino
Along the Eel River, off of Highway 101 and just west of State Route 271.
0
Comment
CDA6938
Polygonum hydropiper
G. K. Helmkamp, E. A. Helmkamp
2006-10-1
11528
Yuba
Northern Sierra Nevada Mountain Foothills; Along Highway CA-49 just north of the Nevada County line at the Middle Yuba River bridge.
Comment
JEPS101809
Polygonum hydropiper
Dean W. Taylor
1999-9-16
17379
Madera
San Joaquin River 0.5 miles west (downstream) from Skaggs Bridge (Highway 145 10 miles S of Madera)
64
Comment
JEPS50605
Polygonum hydropiper
Joseph P. Tracy
1926-9-6
7791
Trinity
3 mi e South Fork; Northern Coast Ranges, Trinity River, Sharber Slough
182
Comment
JEPS50607
Polygonum hydropiper
W. L. Jepson
1894-11-5
Napa
towards Battle Mt. (near St. Helena)
Comment
JEPS50610
Polygonum hydropiper
W. L. Jepson
1928-8-28
13319
Fresno
between Lone Willow road sta. and Whites Bridge; Four-mile Slough
57
Comment
JEPS66413
Polygonum hydropiper
L. R. Heckard and P. Rubtzoff
1971-7-31
2674
Tehama
land-locked lagoon off Sacramento River (just ne of Red Bluff)
Comment
JEPS74997
Polygonum hydropiper
L. R. Heckard and P. Rubtzoff
1971-9-15
2806
San Joaquin
along Airport Way 2.6 mi s junction of West Ripon road (ca 7 mi sw of Manteca)
Comment
JEPS74998
Polygonum hydropiper
L. R. Heckard and P. Rubtzoff
1971-9-15
2806
San Joaquin
along Airport Way 2.6 mi s junction of West Ripon road (ca 7 mi sw of Manteca)
Comment
JEPS95813
Polygonum hydropiper
Lowell Ahart
1999-10-3
8293
Butte
northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico
32
Comment
JEPS95814
Polygonum hydropiper
Lowell Ahart
1999-9-21
8271
Butte
northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico
32
Comment
JEPS96715
Polygonum hydropiper
Dean W. Taylor
1997-9-19
16238
Mariposa
Yosemite Valley, Yosemite National park, ruderal disturbed margin of paths and parking area in employee housing tents on SE edge of Yosemite Village area
1188
Comment
RSA226853
Polygonum hydropiper
Mary DeDecker
1970-8-21
2565
Inyo
Sierra Nevada: Parker Ranch; South Fork of Oak Creek.
1555
Comment
RSA234469
Polygonum hydropiper
Peter Rubtzoff
1966-9-25
5821
Sonoma
Laguna de Santa Rosa E of Graton, betw. Occidental and Guerneville Roads.
Comment
RSA466395
Polygonum hydropiper
Wm. Martin
1971-9-8
20046
Inyo
5 miles NW of Bishop on Hwy 395.
Comment
RSA466396
Polygonum hydropiper
Wm. Martin
1971-9-10
20225
Placer
1 mile east of Weimar on Hwy 80
610
Comment
RSA618451
Polygonum hydropiper
Mary DeDecker
1970-8-21
2565
Inyo
Sierra Nevada: Parker Ranch; South Fork of Oak Creek, along streamlet.
1555
Comment
RSA715234
Polygonum hydropiper
George K. Helmkamp, E. A. Helmkamp
2005-9-12
9865
El Dorado
Northern Sierra Nevada Foothills, E of Sacramento, Sly Park road (County Hwy E-16) 2 miles E of Pleasant Valley.
854
Comment
RSA747208
Polygonum hydropiper
K. M. Meyer, A. Townesmith
2007-9-24
251
Santa Clara
Henry W. Coe State Park, SW corner of park, Hunting Hollow entrance and parking area.
253
Comment
SEINET10853420
Polygonum hydropiper
Karen M. Meyer, Andrew Townesmith
2007-9-24
Meyer 251
Santa Clara
Henry W. Coe State Park, SW corner of park, Hunting Hollow entrance and parking area.
253
Comment
SEINET4691499
Polygonum hydropiper
Dan S. Cooper
2011-1
711 -90
Los Angeles
South Coast: Madrona Marsh. Torrance
24
Comment
UC1101180
Polygonum hydropiper
Malcolm A. Nobs and S. Galen Smith
1949-9-2
1750
Inyo
on Pine Creek road 2 mi w Highway 395 (13.5 mi n of Bishop)
Comment
UC1101182
Polygonum hydropiper
Malcolm A. Nobs and S. Galen Smith
1949-8-22
1539
Placer
Roseville; stream at sw city limits
Comment
UC1101183
Polygonum hydropiper
Malcolm A. Nobs and S. Galen Smith
1949-8-22
1525
Nevada
on Hwy 24 11 mi n Nevada-Placer County line (along creek); Cherry Creek
Comment
UC1192316
Polygonum hydropiper
Malcolm A. Nobs and S. Galen Smith
1949-8-11
1336
Humboldt
Stone Lagoon; marsh on e shore
Comment
UC1192346
Polygonum hydropiper
Malcolm A. Nobs and S. Galen Smith
1949-7-19
1027
Shasta
junction of river and Hat Creek (Hwy 299); Pit River
Comment
UC1283741
Polygonum hydropiper
Beecher Crampton
1964-8-26
7179
Shasta
Castle Crag Sacramento River
Comment
UC1299692
Polygonum hydropiper
Freed W. Hoffman
1946-8-20
1264
Napa
below Conn Lake Dam; North Coast Ranges
Comment
UC1509657
Polygonum hydropiper
L. Ahart
1982-10-6
3846
Butte
ca 3 mi ne Honcut; Peter Ahart Ranch, North Honcut Creek
50
Comment
UC1509659
Polygonum hydropiper
L. Ahart
1982-10-11
3864
Butte
large duckpond ca 1/10 mi w Graylodge Wildlife Refuge (ca 12 mi sw of Gridley)
35
Comment
UC153936
Polygonum hydropiper
Geo. Hansen
Aug 1895
754
Amador
Irishtown Sequoia Gigantea Region
457
Comment
UC1562373
Polygonum hydropiper
Lowell Ahart
1990-6-16
6521
Butte
along creek about 1/2 mi sw Enterprise Bridge across lake (below high-water line of lake); Lake Oroville, McCabe Creek
243
Comment
UC1562376
Polygonum hydropiper
Lowell Ahart
1990-5-25
6493
Butte
about 1/8 mi nw Enterprise Bridge across lake (e of Enterprise Boat Launch Area, below high water line of lake); Lake Oroville
259
Comment
UC1606435
Polygonum hydropiper
Barbara Ertter
1993-11-8
12297
Tehama
at Hwy 99 n Vina; Deer Creek
Comment Read comments Jul 16 2009
UC1965951
Polygonum hydropiper
Alison Colwell, Dena Grossenbacher
2006-9-21
AC 06 -509
Tuolumne
East side of pond on North side of the Tuolumne River, Poopenaut Valley.
1018
Comment
UC302992
Polygonum hydropiper
Joseph P. Tracy
1926-9-6
7792
Trinity
Sharber Slough Northern Coast Ranges, Trinity River (on river 3 mi e of the South Fork)
182
Comment
UC302993
Polygonum hydropiper
Joseph P. Tracy
1926-9-6
7791 A
Trinity
Sharber Slough Northern Coast Ranges, Trinity River (on river 3 mi e of the South Fork)
182
Comment
UC672982
Polygonum hydropiper
Joseph P. Tracy
1927-10-8
8386
Humboldt
Boyes Ranch Prairie Creek
91
Comment
UC768464
Polygonum hydropiper
R. F. Hoover
1937-8-24
2694
Tuolumne
2 mi e Tuolumne
Comment
UCD39000
Polygonum hydropiper
Beecher Crampton
1961-10-31
6074
Sacramento
1 mile south of Fair Oaks along the American River.
Comment
UCD39152
Polygonum hydropiper
Beecher Crampton
1964-8-26
7179
Shasta
Castle Crag, 3 miles s. of Dusmuir, Sacramento River.
Comment
UCR123381
Polygonum hydropiper
Lisa Kegarice
1993-6-22
s.n.
San Joaquin
Sacramento Valley, under the north side of the Orwood Trestle, Santa Fe Railway, 12 miles west of Stockton, between Bacon and Woodward Islands in the San Joaquin River delta between Old River and Middle River
0
Comment
UCR170473
Polygonum hydropiper
George K. Helmkamp, Elizabeth Helmkamp
2005-9-12
9865
El Dorado
Northern Sierra Nevada Foothills, east of Sacramento; Sly Park Road (County Highway E-16), c. 2 mi east of Pleasant Valley
854
Comment
UCR179302
Polygonum hydropiper
George K. Helmkamp, E. A. Helmkamp
2006-10-10
11528
Yuba
Northern Sierra Nevada Mountains Foothills, along Calif. Hwy 49 just north of the Nevada County line at the Middle Yuba River bridge
451
Comment
UCR185535
Polygonum hydropiper
A. C. Sanders
2007-7-8
34304
Madera
Sierra Nevada Mtns., Bass Lake, near Cedar Bluff Campground on the central west side of lake
1037
Comment
UCR185540
Polygonum hydropiper
A. C. Sanders
2007-7-8
34305
Madera
Sierra Nevada Mtns., Bass Lake, near Cedar Bluff Campground on the central west side of lake
1037
Comment
UCR259890
Polygonum hydropiper
George K. Helmkamp, Elizabeth Helmkamp
2013-10-18
22442
Amador
Sierra Nevada Mountains Foothills, Plymouth, at the junction of Mineral Street and Mill Street, near Hwy CA-49
329
Comment
UCR280148
Polygonum hydropiper
Peter Rubtzoff
1973-8-15
7210
Mendocino
Russian River bottom at Squaw Rock, 6 miles south of Hopland
131
Comment
UCR280149
Polygonum hydropiper
Peter Rubtzoff
1973-8-20
7223
Sonoma
Sonoma Creek bottom near Agua Caliente Road crossing west of Agua Caliente
38
Comment
UCR36494
Polygonum hydropiper
A. C. Sanders, J. Zabriskie
1984-6-18
5074
Sacramento
American River NE of Sacramento, C.M. Goethe Park near Rancho Cordova
18
Comment
YM-YOSE118624
Polygonum hydropiper
Alison Colwell
2006-9-21
AC 06 -509
Tuolumne
East side of pond on North side of the Tuolumne River, Poopenaut Valley. .
1018
Comment
YM-YOSE118625
Polygonum hydropiper
Alison Colwell
2006-9-21
AC 06 -509
Tuolumne
East side of pond on North side of the Tuolumne River, Poopenaut Valley. .
1018
Comment
CDA22799
Polygonum hydropiper
J. F. Silva
1957-10-9
San Joaquin
Escalon.
0
Comment
CDA2785
Polygonum hydropiper
J. F. Silva
1957-10-9
395 -57
San Joaquin
Escalon.
0
Comment
CDA2787
Polygonum hydropiper
G. D. Barbe
1983-9-13
4099
El Dorado
Vicinity of Finnon Reservoir, Rock Creek Road, northeast of Placerville.
0
Comment
CDA2788
Polygonum hydropiper
L. Ahart, Vernon Oswald
1999-10-3
8293
Butte
Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico.
Comment
GH404959
Polygonum hydropiper
L. Ahart & V. H. Oswald
1999-10-3
8293
Unknown
east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ordbend, about 12 miles (air) southwest of Chico
32
Comment
HREC711
Polygonum hydropiper
H. F. Heady
1952-8-25
426
Mendocino
Pond Pasture - Hopland Field Station
Comment
JEPS50606
Polygonum hydropiper
P. B. Kennedy
1921-7-13
Merced
Clyne Field San Joaquin Valley, Santa Rita Island
Comment Read comments Aug 18 2010
JEPS50608
Polygonum hydropiper
W. L. Jepson
Sept. 1891
Sacramento
Lower Sac.
Comment
NY412590
Polygonum hydropiper
Collector unspecified
s.n.
Unknown
Ross Landing
Comment
POM161060
Polygonum hydropiper
Joseph P. Tracy
1926-9-6
7791
Trinity
Sharber Slough on Trinity River 3 miles E of the S Fork.
183
Comment
POM183305
Polygonum hydropiper
J. T. Howell
1931-9-27
8118
Mendocino
3.5 miles N of Point Areua, Mendocino County
Comment
POM211807
Polygonum hydropiper
Louis C. Wheeler
1934-9-20
3287
Siskiyou
Lumgrey Creek, Siskiyou Mts. Mt. Diablo Mer.
671
Comment
POM312908
Polygonum hydropiper
Malcolm A. Nobs, S. Galen Smith
1949-7-19
1027
Shasta
Jct of Pit River and Hat Creek, Hwy 299.
Comment
POM312909
Polygonum hydropiper
S. Galen Smith, Malcolm A. Nobs
1949-8-29
1627
Tuolumne
1.5 miles W of Sonora ( Well fertilized by Sonora's sewer)
Comment
RSA128554
Polygonum hydropiper
Peter H. Raven
1954-9-2
8115
Lassen
Bed of St. Helena Creek at Mirabel Park, 4.8 miles S of Middletown
Comment
RSA128572
Polygonum hydropiper
Peter H. Raven
1954-8-30
8065
Nevada
A small pond along road, near Red Dog.
793
Comment
RSA466397
Polygonum hydropiper
E. E. Stanford
1927-9-17
699
San Joaquin
Stockton
Comment
RSA466398
Polygonum hydropiper
Wm. Martin
1971-9-19
20664
Tuolumne
15 miles south of the jct. of Hwy 49 and 108 on Hwy 49.
Comment
RSA488051
Polygonum hydropiper
Claire R. Wheeler
1982-9-27
3290
Mendocino
Rancheria Creek Hwy 128 and Fish Rock Road, 5 miles NW of Yorkville.
244
Comment
RSA518661
Polygonum hydropiper
L. R. Heckard
1971-7-31
26743
Tehama
Damp mud of land locked lagoon off the Sacramento River just NE of Red Bluff.
Comment
RSA800607
Polygonum hydropiper
Peter Rubtzoff
1973-8-15
7210
Sonoma
Russian River at Squaw Rock, 6 mi south of Hopland.
Comment
SEINET10479466
Polygonum hydropiper
Lowell Ahart
1983-9-17
Ahart 4437
Butte
T24N R4E section 34. Ca. 1/4 mi se of Stirling City. Yellow Pine Forest; 1100 m.
1100
Comment
SEINET10838763
Polygonum hydropiper
Lowell Ahart
1985-10-19
Ahart 5210
Sutter
Dean Ranch, Sutter Buttes. About 12 miles west of Marysville.
Comment
SEINET10937571
Polygonum hydropiper
Lowell Ahart
1985-11-7
Ahart 5234
Butte
Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam.
Comment
SEINET11930161
Polygonum hydropiper
Unknown
1981-1
3069
Plumas
On a sandbar along Indian Creek, about 1/2 mi SW of the intersection of Hwy 89 and
1097
Comment
SEINET11934448
Polygonum hydropiper
L. Ahart, Dean, M.; Sands, P.
1985-1
5210
Sutter
Dean Ranch, Sutter Buttes About 12 mi W of Marysville. On pond sides about 1/8 mi SE from Dean Cabin
274
Comment
CDA2783
Polygonum hydropiperoides
Jerome Dunnicliff
1979-6-12
Kings
16th and Kansas Northeast, Stratford.
0
Comment
CDA28655
Polygonum hydropiperoides
G. D. Barbe, L. Pineda
1990-9-18
4398
Imperial
0.5 miles west of Guthrie Road on Worthington Road, north of NAS, 5.5 miles west of Imperial, Imperial Avenue.
0
Comment
CDA32122
Polygonum hydropiperoides
L. Ahart, John Dittes
2008-8-21
15245
Merced
On the bottom of Dutchman Slough, about 220 yards south of the wire gate on the south side of Sandy Mush Road, 3.7 miles west of Highway 99, about 8.5 miles south-southeast of Merced.
Comment
CDA36203
Polygonum hydropiperoides
A. C. Sanders, Mitch Provance, T. B. Salvato
2009-6-1
37065
Los Angeles
San Gabriel Valley; Rio Hondo in Whittier Narrows area, west of Rosemead Blvd. (Hwy 19) under SCE powerlines, beyond a tree nursery.
Comment
CLARK-A1528-3787
Polygonum hydropiperoides
John C. Roos, Lucille Roos
1952-6-27
5799
San Bernardino
San Bernardino
304
Comment
JEPS104371
Polygonum hydropiperoides
Lowell Ahart
2003-9-17
10589
Tehama
On the south edge of a gravel bar on the south side of Deer Creek, ca 400 yd e of Highway 99, ca 5 mi (air) se of Los Molinos.
60
Comment
JEPS112022
Polygonum hydropiperoides
Dean G. Kelch and Andrew G. Murdock
2004-6-6
DGK 04 .228
Contra Costa
Martinez - Train Station. Downtown Martinez. Alhambra Creek near bay and railroad Station.
Comment
JEPS112593
Polygonum hydropiperoides
Jake Ruygt
1991-7-20
2771
Napa
Lake Orville, Friesen's Lakes, Angwin
563
Comment
JEPS114551
Polygonum hydropiperoides
Lowell Ahart, John Dittes
2008-8-21
15245
Merced
On the bottom of Dutchman Slough, about 220 yards south of the wire gate on the south side of Sandy Mush Road, 3.7 miles west of Highway 99, about 8.5 miles south-southeast of Merced
53
Comment
JEPS117465
Polygonum hydropiperoides
Lowell Ahart, John Dittes
2010-7-30
16933
Siskiyou
Along the south edge of the Shasta River, about 100 yards east of the East Louie Road Bridge, Shasta Big Springs Ranch, 1.6 miles (air) southwest of Big Springs Lake, 4.6 miles (air) northwest of Dwinnel Dam, 5.7 miles (air) southeast of Grenada
716
Comment
JEPS50611
Polygonum hydropiperoides
S. B. Parish
Sep. 1886
San Bernardino
Comment
POM118164
Polygonum hydropiperoides
H. P. Chandler
1912-8-6
1142
Mariposa
Yosemite Valley.
1210
Comment
POM156192
Polygonum hydropiperoides
L. R. Abrams
1902-6-13
2530
Los Angeles
Ballona Creek near Mesmer.
Comment
POM224747
Polygonum hydropiperoides
P. A. Munz
1935-10-21
14652
Riverside
Santa Ana River, below Rincon.
Comment
POM286373
Polygonum hydropiperoides
Lyman Benson
1931-8-31
2892
Lake
Soda Bay Middle N Coast, alt Clear Lake.
427
Comment
POM466337
Polygonum hydropiperoides
J. Ewan
1931-10-3
5205
San Bernardino
Chino Creek, 2 miles south of Chino.
Comment
RSA0105495
Polygonum hydropiperoides
R. G. Swinney
2011-11-3
15979
Los Angeles
San Gabriel Mountains: Little Santa Anita Canyon, First Water, 1.7 miles up canyon from Mt. Wilson Trailhead, north of Sierra Madre.
622
Comment
RSA0116457
Polygonum hydropiperoides
Mitch Provance
2012-11-10
17604
Riverside
San Bernardino Valley: Riverside, Springbrook Creek (remnant) Fairmont Park, between the east side of Lake Evans and the west side of Market St.
245
Comment
RSA102351
Polygonum hydropiperoides
S. B. Parish
1893-10
s.n.
San Bernardino
[Unspecified]
Comment
RSA195
Polygonum hydropiperoides
J. T. Howell
1927-7-5
268
Orange
West side, Rancho Santa Ana [Botanic Garden].
152
Comment
RSA234544
Polygonum hydropiperoides
Peter Rubtzoff
1960-9-14
4535
Sonoma
Laguna de Santa Rosa, E of Graton, (between Occidental and Guerneville road)
Comment
RSA289843
Polygonum hydropiperoides
Barry A. Prigge
1980-9-17
4069
Riverside
Coachella Valley Stormwater Channel: E of Munroe St., Indio.
-3
Comment
RSA466335A
Polygonum hydropiperoides
J. Ewan
1931-10-3
5211
Riverside
Santa Ana River, 4 mi. NW if Corona.
Comment
RSA466336A
Polygonum hydropiperoides
S. B. Parish
1917-10-15
11616
San Bernardino
San Bernardino Valley
Comment
RSA602463
Polygonum hydropiperoides
Scott D. White
1997-5-14
5125
Los Angeles
Big Tujunga Wash: Sunland-Tujunga area; alluvial fan below San Gabriel Mountains SW of I -210 freeway, E of Hansen Dam, and N of Wentworth St.
351
Comment
RSA6067
Polygonum hydropiperoides
Carl B. Wolf
1932-6-13
3719
Orange
Storm drain at Malvern and Nicholas Aves; Fullerton.
53
Comment
RSA618990
Polygonum hydropiperoides
LeRoy Gross
1998-10-16
88
Los Angeles
Southern base San Gabriel Mtns.: Tujunga Ponds. West of 210 freeway in big Tujunga wash, city of Sunland.
366
Comment
RSA683223
Polygonum hydropiperoides
Scott D. White, Matt Carlton
2003-11-20
9868
Orange
Santa Ana Mountain foothills; San Juan Creek in San Juan Capistrano; (Dana Point)
24
Comment
RSA713410
Polygonum hydropiperoides
A. C. Sanders
2004-6-10
28100
San Diego
South Coast: Carlsbad, Agua Hedionda Ecological Reserve, near El Camino Real and Cannon Rd., along lower Agua Hedionda Creek.
9
Comment
RSA721174
Polygonum hydropiperoides
J. Mark Porter
2001-11-18
13366
San Bernardino
WHIPPLE MOUNTAINS: Foot of mountains, along the Colorado River.
146
Comment
RSA746554
Polygonum hydropiperoides
A. C. Sanders, T. B. Salvato, Mitch Provance
2009-5-27
36952
Los Angeles
confluence of San Gabriel River and Walnut Creek, between El Monte and Baldwin Park, S of I-10 Fwy and north of Valley Blvd, W of I-605 Fwy, under SCE powerlines
83
Comment
RSA747289
Polygonum hydropiperoides
R. G. Swinney
2008-5-30
8895
Los Angeles
San Gabriel Canyon along old road/trail at El Encanto
256
Comment
RSA750233
Polygonum hydropiperoides
A. C. Sanders, Mitch Provance, T. B. Salvato
2009-6-1
37065
Los Angeles
Rio Hondo in Whittier Narrows area, west of Rosemead Blvd. (Hwy 19) under SCE powerlines, beyond a tree nursery
63
Comment
RSA756069
Polygonum hydropiperoides
T. B. Salvato, Billy Deane
2006-10-16
1927
Orange
Irvine, San Diego Creek flood control channel, between Michelson Driveand the 405 Fwy.
9
Comment
RSA756996
Polygonum hydropiperoides
A. C. Sanders
2009-11-6
37218
Los Angeles
Madrona Marsh, Torrance
24
Comment
RSA758708
Polygonum hydropiperoides
R. G. Swinney
2008-12-2
9905
Los Angeles
mouth of San Gabriel Canyon between Foothill Blvd. and the I-210 Fwy, from main river channel to 300 m east.
165
Comment
RSA762332
Polygonum hydropiperoides
R. G. Swinney
2008-11-30
9862
Los Angeles
Azusa, San Gabriel River Channel, 1.2 mi. north of Foothill Blvd. at mouth of Fish Canyon.
204
Comment
RSA764408
Polygonum hydropiperoides
Justin M. Wood
2009-8-18
1259
Los Angeles
City of Claremont: Bernard Field Station; NW corner of Mills Ave and Foothill Blvd.
390
Comment
RSA769016
Polygonum hydropiperoides
L. Ahart, John Dittes
2008-8-21
15245
Merced
Dutchman Slough, about 220 yards south of the wire gate on the south side of Sandy Mush Road, 3.7 miles west of Highway 99, about 8.5 miles south-southeast of Merced.
53
Comment
SEINET2042036
Polygonum hydropiperoides
George Helmkamp, E. A. Helmkamp
2000-8-29
5985
Riverside
Colorado Desert: S of Mecca, where Lincoln St. Crosses the Whitewater River. Ca. 0.5 mi from the Salton Sea.
67
Comment
SEINET4138034
Polygonum hydropiperoides
Dan S. Cooper
2011-7-23
711 -90
Los Angeles
South Coast: Madrona Marsh, Torrance
24
Comment
SEINET8072012
Polygonum hydropiperoides
C. Elam
2004-1
AZ 050 -166
Imperial
Oxbow outlet.
Comment
SFV20804
Polygonum hydropiperoides
L. Gross
2000-8-25
262
Los Angeles
San Fernando Valley Orcas Park, entered from Foothill Blvd onto Orcas Ave. Hiked west from park heading toward Hansen Dam. East side of Hansen Dam.
325
Comment
UC1101166
Polygonum hydropiperoides
Herbert L. Mason and S. Galen Smith
1948-8-9
8302
Merced
1 mi w Los Banos
Comment
UC1101167
Polygonum hydropiperoides
Malcolm A. Nobs and S. Galen Smith
1949-9-9
1857 a
Lake
Bridge 1431 Clear Lake, Scott Creek (stream bank, nw end of lake)
Comment
UC1101169
Polygonum hydropiperoides
Malcolm A. Nobs and S. Galen Smith
1949-8-11
1328
Del Norte
3 mi s Crescent City
Comment
UC1101170
Polygonum hydropiperoides
Malcolm A. Nobs and S. Galen Smith
1949-8-4
1215
Mendocino
3.8 mi n Willits; Outlet Creek
Comment
UC1101171
Polygonum hydropiperoides
Malcolm A. Nobs and S. Galen Smith
1948-9-5
561
Imperial
above Laguna Dam (on bridge foundation); Colorado River
Comment
UC1101172
Polygonum hydropiperoides
Malcolm A. Nobs and S. Galen Smith
1948-8-24
412
Merced
15 mi e Gustine; Alkaline Grasslands of San Joaquin Valley, Modesto Propert
Comment
UC1101173
Polygonum hydropiperoides
Malcolm A. Nobs and S. Galen Smith
1948-8-24
405
Merced
15 mi e Gustine; Alkaline Grasslands of San Joaquin Valley, Modesto Propert
Comment
UC1101174
Polygonum hydropiperoides
Malcolm A. Nobs and S. Galen Smith
1948-7-14
120
Merced
pond 1/4 mi s Holister Club road (about 4 mi se of Gustine); Gustine Gun Club
Comment
UC1101175
Polygonum hydropiperoides
Herbert L. Mason and Verne Grant
1946-8-14
13027
Butte
Sacramento Outing Club Butte Sink (canal near big pond)
Comment
UC1101177
Polygonum hydropiperoides
Herbert L. Mason
1929-9-21
5442
San Joaquin
Holt Alklaline Grasslands of San Joaquin Valley
Comment
UC1101178
Polygonum hydropiperoides
Herbert L. Mason
1928-9-30
4971
San Joaquin
near Holt; Alkaline Grasslands of San Joaquin Valley, San Joaquin Del
Comment
UC1187044
Polygonum hydropiperoides
V. F. Hesse
1960-8-30
2885
Santa Cruz
near Freedom (lake shore); Pinto Lake
60
Comment
UC1509634
Polygonum hydropiperoides
L. Ahart
1982-8-22
3748
Butte
ca 3 mi ne Honcut; Peter Ahart Ranch, North Honcut Creek
50
Comment
UC1586531
Polygonum hydropiperoides
Lowell Ahart
1991-9-14
6716
Butte
about 2 mi e Honcut (sides of a large reservoir); Joie Osgood Ranch
45
Comment
UC1586532
Polygonum hydropiperoides
Lowell Ahart
1991-9-14
6715
Butte
about 2 mi e Honcut (on sides of large reservoir); Joie Osgood Ranch
45
Comment
UC219481
Polygonum hydropiperoides
LeRoy Abrams
1902-6-13
2530
Los Angeles
near Mesmer; Ballona Creek
Comment
UC311579
Polygonum hydropiperoides
H. P. Chandler
1912-8-6
1142
Mariposa
Yosemite Valley
1210
Comment
UC582926
Polygonum hydropiperoides
Philip A. Munz
1935-10-21
14652
Riverside
below Rincon; Santa Ana River
Comment
UC6630
Polygonum hydropiperoides
Michener and Bioletti
Sept. 1892
San Joaquin
San Joaquin Bridge
Comment
UC6637
Polygonum hydropiperoides
Michener and Bioletti
1892-9-9
San Joaquin
Lathrop
Comment
UC6706
Polygonum hydropiperoides
S. B. Parish
Oct. 1886
San Bernardino
San Bernardino
Comment
UC6707
Polygonum hydropiperoides
S. B. Parish
1895-7-20
3797
San Bernardino
Vicinity of San Bernardino
304
Comment
UC676911
Polygonum hydropiperoides
R. Bacigalupi, I. L. Wiggins and R. S. Ferris
1941-7-29
2688
Fresno
on State Hwy 180 2 mi w Tranquility Junction
Comment
UC729963
Polygonum hydropiperoides
Carl B. Wolf
1932-6-13
3719
Orange
Fullerton; Malvern and Nicholas Avenues
53
Comment
UCR122569
Polygonum hydropiperoides
George K. Helmkamp, E. A. Helmkamp
2000-8-29
5985
Riverside
Colorado Desert., South of Mecca, where Lincoln St. crosses the Whitewater River, about 0.5 mile from the Salton Sea
-67
Comment
UCR129176
Polygonum hydropiperoides
S. B. Parish
1917-10-15
11616
San Bernardino
San Bernardino Valley, San Bernardino Valley
305
Comment
UCR131389
Polygonum hydropiperoides
Alison Lipman
1998-9-4
s.n.
Los Angeles
South Coastal Plains Region, Los Angeles, San Pedro area, Defense Fuel Support Point (Naval Reservation) 3171 North Gaffey St.
30
Comment
UCR137001
Polygonum hydropiperoides
A. C. Sanders
2004-6-10
28100
San Diego
South Coast, Carlsbad, Agua Hedionda Ecological Reserve, near El Camino Real and Cannon Rd., along lower Agua Hedionda Creek
9
Comment
UCR139909
Polygonum hydropiperoides
Scott D. White
1997-5-14
5125
Los Angeles
Base of San Gabriel Mtns, Big Tujunga Wash, Sunland-Tujunga area, SW of 210 Freeway, east of Hansen Dam and north of Wentworth Street
351
Comment
UCR150564
Polygonum hydropiperoides
Scott D. White, Matt Carlton
2003-11-20
9868
Orange
South Coastal Plain, Santa Ana Mtn foothills. San Juan Creek in San Juan Capistrano
24
Comment
UCR157681
Polygonum hydropiperoides
Scott D. White
1994-7-18
2289
Los Angeles
San Gabriel Mtns., San Dimas Canyon; along San Dimas Wash
335
Comment
UCR170193
Polygonum hydropiperoides
George K. Helmkamp, Elizabeth Helmkamp
2005-8-14
9820
El Dorado
Northern Sierra Nevada Foothills, Diamond Springs. Lake Oaks mobile home park
521
Comment
UCR19064
Polygonum hydropiperoides
John C. Roos, L. Roos
1952-6-27
5799
San Bernardino
San Bernardino Valley, City of San Bernardino; E Street south of the city
305
Comment
UCR198023
Polygonum hydropiperoides
Frederica Bowcutt
1993-7-3
1671
Sacramento
Delta Meadows River Park, c. 25 air mi south of Sacramento, 10 air mi west of Galt, and 1 air mi northeast of Walnut Grove. Immediately east of Locke, in the Sacramento River Delta, north of the Delta Cross Channel. At end of levee road on old Southern Pacific Railroad right-of-way along side slough off of Snodgrass Slough
0
Comment
UCR205737
Polygonum hydropiperoides
A. C. Sanders, T. B. Salvato, Mitch Provance
2009-5-28
36985
Los Angeles
San Gabriel Valley, San Gabriel River channel between Lower Azusa Rd. and the I-605 crossing, southwestern lobe of Irwindale between Baldwin Park and El Monte, under SCE powerlines
110
Comment
UCR205940
Polygonum hydropiperoides
A. C. Sanders, Mitch Provance, T. B. Salvato
2009-6-1
37065
Los Angeles
San Gabriel Valley, Rio Hondo in Whittier Narrows area, west of Rosemead Blvd. (Hwy 19) under SCE powerlines, beyond a tree nursery
63
Comment
UCR206480
Polygonum hydropiperoides
R. G. Swinney
2008-5-30
8895
Los Angeles
San Gabriel Mtns., San Gabriel Canyon at El Encanto, west bank of the river
256
Comment
UCR206509
Polygonum hydropiperoides
A. C. Sanders, T. B. Salvato, Mitch Provance
2009-5-27
36952
Los Angeles
San Gabriel Valley, confluence of San Gabriel River and Walnut Creek, between El Monte and Baldwin Park, S of I-10 Fwy and north of Valley Blvd, W of I-605 Fwy, under SCE powerlines
88
Comment
UCR206510
Polygonum hydropiperoides
A. C. Sanders, T. B. Salvato, Mitch Provance
2009-5-27
36951
Los Angeles
San Gabriel Valley, confluence of San Gabriel River and Walnut Creek, between El Monte and Baldwin Park, S of I-10 Fwy and north of Valley Blvd, W of I-605 Fwy, under SCE powerlines
88
Comment
UCR209303
Polygonum hydropiperoides
A. C. Sanders, T. B. Salvato, Mitch Provance
2009-5-26
36939
Los Angeles
San Gabriel Valley, San Gabriel River between Bassett and South El Monte, from Hwy 60 crossing to above confluence with San Jose Creek, vicinity of Thienes Ave. public access to San Gab. Riv. greenway, along the Edison powerlines
71
Comment
UCR209312
Polygonum hydropiperoides
A. C. Sanders
2009-11-6
37218
Los Angeles
South Coast, Madrona Marsh, Torrance
24
Comment
UCR210024
Polygonum hydropiperoides
R. G. Swinney
2008-12-2
9905
Los Angeles
San Gabriel Mtns., mouth of San Gabriel Canyon between Foothill Blvd. and the I-210 Fwy, from main river channel to 300 m east
177
Comment
UCR210187
Polygonum hydropiperoides
R. G. Swinney
2008-10-22
9663
Los Angeles
San Gabriel Mtns., Azusa, mouth of San Gabriel Canyon, 0.5 mi. upstream from entrance of Old San Gabriel Canyon Rd. at El Encanto
244
Comment
UCR210362
Polygonum hydropiperoides
T. B. Salvato, Billy Deane
2006-10-16
1927
Orange
South Coast, Irvine, San Diego Creek flood control channel, between Michelson Drive and the 405 FWY
12
Comment
UCR210493
Polygonum hydropiperoides
R. G. Swinney
2008-11-30
9862
Los Angeles
San Gabriel Mtns., Azusa, San Gabriel River Channel, 1.2 mi. north of Foothill Blvd. at mouth of Fish Canyon
204
Comment
UCR229175
Polygonum hydropiperoides
Dan S. Cooper
2011-8-30
s.n.
Los Angeles
South Coast, Madrona Marsh, Torrance
24
Comment
UCR232641
Polygonum hydropiperoides
George K. Helmkamp, E. A. Helmkamp
2011-10-13
18410
El Dorado
Northern Sierra Nevada Mountains Foothills, Forebay Road, 8.1 miles northwest of Pollock Pines at the south side of the bridge over the South Fork American River
611
Comment
UCR241972
Polygonum hydropiperoides
George K. Helmkamp, E. A. Helmkamp
2012-9-7
19775
Amador
Northern Sierra Nevada Mountains Foothills, along CA-49 in Plymouth; 0.1 mile south of its junction with Fiddletown Rd./Plymouth-Shenandoah Rd.
303
Comment
UCR246494
Polygonum hydropiperoides
Dan S. Cooper
2011-7-23
711- 90
Los Angeles
South Coast, Madrona Marsh, Torrance
24
Comment
UCR271535
Polygonum hydropiperoides
R. G. Swinney
2011-11-3
15979
Los Angeles
San Gabriel Mountains, Little Santa Anita Canyon, 'First Water', 1.7 miles up canyon from Mt. Wilson Trailhead, north of Sierra Madre
622
Comment
UCR278901
Polygonum hydropiperoides
Mitch Provance
2012-11-10
17604
Riverside
San Bernardino Valley, Riverside, Springbrook Creek (remnant) Fairmont Park, between the east side of Lake Evans and the west side of Market St.
245
Comment
UCR66557
Polygonum hydropiperoides
I. M. Johnston
1916-1
94
San Bernardino
San Gabriel Valley, Red Hill east of Upland
427
Comment
UCR67000
Polygonum hydropiperoides
S. J. Myers
1990-12-5
s.n.
Riverside
Santa Ana River, Louis Rubidoux Nature Center, along drainage that connects to Sunnyslope Channel, and to the confluence with the Santa Ana River
213
Comment
UCR72815
Polygonum hydropiperoides
A. C. Sanders
1992-8-23
12467
San Bernardino
San Bernardino Mtns., Oak Glen, Riley's Farm on E side of Oak Glen Road c. 2 mi above Wildwood Canyon Road
1372
Comment
CDA2781
Polygonum hydropiperoides
Jerome Dunnicliff
1979-10-1
Kings
14th and Iona Avenues, southwest of Armona.
0
Comment
CDA2782
Polygonum hydropiperoides
J. B. Gianelli
1972-10-15
San Joaquin
South bank of Bear Creek, 100 yards south of Airport Way, Stockton.
0
Comment
POM156152
Polygonum hydropiperoides
L. R. Abrams
1904-9-2
4186
Los Angeles
Los Angeles River.
Comment
POM196320
Polygonum hydropiperoides
E. E. Stanford
1929-10-25
1176
San Joaquin
Near Stockton
Comment
POM312910
Polygonum hydropiperoides
H. L. Mason
1928-9-30
4971
San Joaquin
San Joaquin Delta near Holt.
Comment
POM312911
Polygonum hydropiperoides
S. Galen Smith, Malcolm A. Nobs
1949-9-9
1857 a
Lake
Marshy stream bank at Scott Creek, Bridge 1431 NW end of Clear Lake
Comment
POM50451
Polygonum hydropiperoides
L. R. Abrams
1901-08
2187
Los Angeles
Ballona Creek.
Comment
RSA161326
Polygonum hydropiperoides
Peter H. Raven
1961-8-27
16614
Merced
Along Merced River near bridge below Snelling.
Comment
RSA234545
Polygonum hydropiperoides
Peter Rubtzoff
1958-8-31
3954
Sonoma
Atascadero Creek Marsh.
Comment
RSA234546
Polygonum hydropiperoides
Peter Rubtzoff
1955-8-27
2099
Sonoma
Bennett Mtn Lake.
Comment
RSA2441
Polygonum hydropiperoides
J. W. Blankinship
1928-9-17
s.n.
Lake
Lakeport.
Comment
RSA30998
Polygonum hydropiperoides
R. C. Bacigalupi, I. L. Wiggins, Roxana S. Ferris
1941-7-29
2688
Fresno
Alkaline pools, 2 miles W of Tranquility jct on Hwy 180
Comment
RSA44348
Polygonum hydropiperoides
W. I. Follett
1948-10-29
s.n.
Kings
Kings River 7 miles N of Hanford
Comment
RSA653385
Polygonum hydropiperoides
LeRoy Gross
2000-8-25
262
Los Angeles
Big Tujunga Wash/ Verdugo Mountains: Orcas Park, entered from Foothill Blvd onto Orcas Ave. Hiked west from park, heading toward Hansen Dam.
325
Comment
RSA81706
Polygonum hydropiperoides
Roxana S. Ferris, Rimo Bacigalupi
1951-8-24
12435
Fresno
Edge of ditch on General Grant Grove Hwy just E of Centerville
Comment
RSA94326
Polygonum hydropiperoides
Peter Rubtzoff
1951-9-2
711
Sonoma
N of the Lower marsh, in the creek
Comment
RSA94327
Polygonum hydropiperoides
Peter Rubtzoff
1951-7-1
349
Sonoma
Margin of Creek at Hwy 12, SE of Forestville
Comment
RSA97519
Polygonum hydropiperoides
Beecher Crampton
1954-8-3
2229
Sacramento
Along the road to Franklin, 5 miles S of Sacramento, Sacramento County
Comment
SEINET10479646
Polygonum hydropiperoides
Lowell Ahart
1991-9-14
Ahart 6715
Butte
On the sides of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14.
46
Comment
SEINET10479647
Polygonum hydropiperoides
Lowell Ahart
1991-9-14
Ahart 6716
Butte
On the sides of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14.
46
Comment
SEINET11933017
Polygonum hydropiperoides
W. Knight, Knight, I.
1983-1
4882
Lake
From pond section of Tilden Botanic Garden, in Contra Costa Co. Originally collected in 1982 at
305
Comment
UC1101168
Polygonum hydropiperoides
Malcolm A. Nobs and S. Galen Smith
1949-8-19
1426
Plumas
on Hwy 89 2 mi s Crescent Mills (pond in river, s end of valley); Indian Valley
Comment
UC1101176
Polygonum hydropiperoides
Herbert L. Mason
August 1930
5721
Lake
Clear Lake; along shores
Comment
UC1176914
Polygonum hydropiperoides
John Thomas Howell
1945-10-14
Marin
Olema Meadows
Comment
GH36704
Polygonum hydropiperoides var. asperifolium
J. C. Nevin
1904-1-1
2
Unknown
East Los Angeles
Comment
RSA0042551
Polygonum hydropiperoides var. asperifolium
Samuel Bonsal Parish
1910-9-10
5099
San Bernardino
Near San Bernardino.
304
Comment
RSA65870
Polygonum hydropiperoides var. asperifolium
F. W. Peirson
1923-1-21
1792
Los Angeles
Pond north of East Lake Park, Los Angeles.
Comment
SEINET10937606
Polygonum hydropiperoides var. asperifolium
Mary Susan Taylor
1978-9-8
Taylor 1883
Butte
Along flood control slough, ca. 4 mi N of Chico, along Hwy 99.
61
Comment