Search Results — 462 specimen records retrieved (354 records with coordinates)
Results for search: Scientific name=Trifolium dubium (including nomenclatural synonyms);   More information: Jepson Online Interchange

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  BFRS31 Image available Trifolium dubium Peter Rubtzoff 1974-6-4 7544 El Dorado Blodgett Forest: Bacchi Meadow (Comp. 290R) Comment
  CAS-BOT-BC126575  Trifolium dubium Dana York 1997-5-1 1754 Fresno Ca. 23 km E-SE of Fresno (FSC), km E of Centerville, Friant-Kern Canal siphon at the Kings River 140 Comment
  CAS-BOT-BC227278  Trifolium dubium George K. Helmkamp; E. A. Helmkamp 2011-5-10 17233 Amador Northern Sierra Nevada Mountains Foothills: Turner Road, 0.8 miles south of its junction with Amador Creek Road, 0.95 mi. SE (119 deg. ) of Amador City 311 Comment
  CAS-BOT-BC227839  Trifolium dubium G. K. Helmkamp; E. A. Helmkamp 2011-5-26 17385 Nevada Northern Sierra Nevada Mountains Foothills: SE of Grass Valley near Rollins Reservoir dam, along CA-174 NNW of Colfax, just west of the bridge over Bear River 613 Comment
  CAS-BOT-BC228602  Trifolium dubium George K. Helmkamp; E. A. Helmkamp 2011-5-6 17209 Yuba East edge of Sacramento Valley: junction of Camp Far West Road and Spenceville Road, 5.4 mi. NE (47 deg. ) of Wheatland 56 Comment
  CAS-BOT-BC232483  Trifolium dubium T. Gosliner; B. Gosliner; S. Bishop; et al. 2012-5-5 1223 Marin Marin Municipal Water District Lands: Mount Tamalpais. Rock Spring area, past meadow, following drainage to NE: spot near drainage/serpentine/forest. Comment
  CAS-BOT-BC257172  Trifolium dubium M. Wetherwax; E. L. Painter 2000-4-19 CR- 25 San Luis Obispo Camp Roberts. Near W. Perimeter Rd., Training Area T, ca. 1.5 air km nw of intersection with Generals Rd. 220 Comment
  CAS-BOT-BC285566  Trifolium dubium C. Kellner; R. Johnson; M. Murphy; A. Young 2013-4-12 13121 Marin Mount Tamalpais. Marin Municipal Water District lands: East of Lagunitas Dam on Lakeview Road at culvert LV-04 Comment
  CAS-BOT-BC285572  Trifolium dubium A. Williams; F. Leist; C. Powell; J. Slamovich 2013-4-12 13226 Marin Mount Tamalpais. Marin Municipal Water District lands: Bullfrog Road, knoll north of quarry Comment
  CAS-BOT-BC361315  Trifolium dubium T. Gosliner; M. E. Hannibal; S. Imazumi; S. Whelan 2013-4-12 13618 Marin Mount Tamalpais. Marin Municipal Water District lands: Rocky Ridge Road, first serpentine outcrop after Bon Tempe dam Comment
  CAS-BOT-BC361339  Trifolium dubium Greg de Nevers 1997-4-24 10975 Sonoma Pepperwood Ranch, 3450 Franz Valley Rd., Santa Rosa 400 Comment
  CAS-BOT-BC368052  Trifolium dubium Greg de Nevers 1998-5-12 11249 Sonoma Pepperwood Ranch, 3450 Franz Valley Rd., Santa Rosa 400 Comment
  CAS-BOT-BC371429  Trifolium dubium Greg de Nevers 1997-4-17 10947 Sonoma Pepperwood Ranch, 3450 Franz Valley Rd., Santa Rosa 400 Comment
  CAS-BOT-BC444014  Trifolium dubium George K. Helmkamp; Mary Alice Barnes 2013-5-3 20475 Placer Foothills, northern Sierra Nevada Mountains: Mosquito Ridge Road, 1.1 miles south of Forest Hill Road. 293 Comment
  CDA12963  Trifolium dubium G. F. Hrusa, J. Hart 1996-4-13 12762 Sacramento Central Valley; Mehrten Ranch, drainage of Laguna Creek, SW of Ione-Carbondale Rd. Comment
  CDA18398  Trifolium dubium G. D. Barbe, P. Hiatt 1980-6-3 2790 Placer Sierra Nevada; Hwy 49 at Rio Oso Rd., north of Auburn, at Placer Co line/Nevada Co. line. Comment
  CDA19404  Trifolium dubium M. I. Wibawa, G. F Hrusa, J. Glazner 2002-4-25 105 Sacramento Sacramento Valley; Along E side of Jaeger Rd, +- 0.5 mi S of Douglas Blvd., +- 1 mi E of Sunrise Blvd, Sacramento. 60 Comment
  CDA19614  Trifolium dubium M. I. Wibawa, L. Pico 2002-6-1 308 Nevada San Juan Ridge; Along Hwy 49, +-2 mi S of junction to Tyler Foote Crossing Rd. Comment
  CDA21231  Trifolium dubium G. F. Hrusa, D. Kelch 2007-4-19 16951 Nevada Sierra Nevada Foothills; 3-4 mi. W of Grass Valley along Hwy 20. 749 Comment
  CDA25744  Trifolium dubium G. K. Helmkamp, E. A. Helmkamp 2008-4-25 13312 El Dorado Sierra Nevada Mountains Foothills; Junction of Meadowbrook and Bear Creek Roads at Traverse Creek, south of Georgetown. Comment
  CDA29487  Trifolium dubium D. G. Kelch, Troy MacGregor 2009-5-1 9 .282 Contra Costa Carquinez Strait; Fernandez Ranch in valley bottom along Christie Rd. Comment
  CDA31271  Trifolium dubium D. G. Kelch 2010-5-6 10 .177 Napa Wooden Valley Road, about 5 km north of Napa/Solano county line, north of Rockville. Comment
  CDA34245  Trifolium dubium L. Ahart 2010-6-9 16784 Butte About 1/4 mile south of the improved parking area and Cherokee Road; North Table Mountain, about 5 3/4 miles (air) northeast of Oroville. Comment
  CDA34543  Trifolium dubium L. Ahart 2007-5-12 13791 Yuba About 20 yards northeast of the second power tower, about 400 yards north of Fruitland Road, about 13 miles (air) northeast of Marysville. Comment
  CDA35803  Trifolium dubium G. K. Helmkamp, E. A. Helmkamp 2007-4-3 11894 El Dorado Foothills, Northern Sierra Nevada Mountains; Hiking trail leaving from CA Highway 49, 3.4 miles northwest of Placerville. Comment
  CDA36841  Trifolium dubium CDFA Staff s.n. Sonoma Sugarloaf Ridge State Park; near junction of Meadow, Hillside, and Gray Pine Trails, east of bridge across Sonoma Creek. 0 Comment
  CDA36891  Trifolium dubium CDFA Staff 1995-5-12 s.n. Placer Dry Creek. 0 Comment
  CDA4288  Trifolium dubium T. C. Fuller 1964-6-23 12231 Trinity Road to Douglas City, 1.7 miles east of Hayfork. 0 Comment
  CDA4290  Trifolium dubium T. C. Fuller 1963-7-15 10862 Shasta South side of Highway 299 to Redding, 1.9 miles west of Burney. 0 Comment
  CDA4292  Trifolium dubium T. C. Fuller 1960-6-29 4639 Trinity 6.2 mi north of Carrville. Comment
  CDA4293  Trifolium dubium H. R. Danielson 1967-6-28 Sacramento 6475 Driftwood Street, Sacramento. 0 Comment
  CDA43073  Trifolium dubium L. P. Janeway, B. Castro 2011-6-5 10360 Butte Cascade Range Foothills.; East side of Chico; along south side of Humboldt Road 2.1 road km east of Bruce Road. Comment
  CDA43312  Trifolium dubium David J. Keil, M. Matina 2010-5-31 30793 San Luis Obispo Western slope of Santa Lucia Mountains. Los Padres National Forest. Trail system east of Ragged Point. Comment
  CHSC101136  Trifolium dubium Lowell Ahart 2009-5-15 15688 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC101432  Trifolium dubium David Isle 2004-5-6 1587 Lake North of Lake Pillsbury in Gravelly Valley. In burn pile at NE edge of airstrip. 573 Comment
  CHSC101433  Trifolium dubium David Isle 2004-5-6 1584 Lake In Salmon Creek overflow depression, Gravelly Valley, N of Lake Pillsbury, >1/4 mile SE of Lake Pillsbury Ranch Gate. 566 Comment
  CHSC101569  Trifolium dubium David Isle 2004-4-21 1609 Glenn Stonyford area; Jessie Westcamp Ranch; in spring area draining south of first barn. MDB and M. 329 Comment
  CHSC104842  Trifolium dubium Lowell Ahart 2010-6-9 16784 Butte About 50 yards west of the fence, about 1/4 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 3/4 miles (air) northeast of Oroville. 405 Comment
  CHSC106295  Trifolium dubium L. P. Janeway; B. Castro 2010-6-12 10013 El Dorado Northern Sierra Nevada Foothills. Pine Hills Preserve, Salmon Falls Unit; ridge northwest of Kanaka Valley Road, southeast of the upper South Fork American River arm of Folsom Lake, and east of Salmon Falls Road; dry side drainage of Crocker Creek 225 m west of sharp bend of Kanaka Valley road 2.2 km north of Deer Valley Road. 305 Comment
  CHSC108182  Trifolium dubium Lowell Ahart 2011-6-7 17398 Yuba West of a willow shrub, just south of the huge gravel bar along the Yuba River, about 150 yards west of the south end of Parks Bar Bridge (Highway 20), about 15 miles (by air) northeast of Marysville. 66 Comment
  CHSC108756  Trifolium dubium L. P. Janeway; B. Castro 2011-6-5 10360 Butte Cascade Range Foothills. East side of Chico; along south side of Humboldt Road 2.1 road km east of Bruce Road. 149 Comment
  CHSC110103  Trifolium dubium L. P. Janeway 2012-5-29 10829 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 4.3 road km north of Lower Forbestown Road; 1.4 air km south of the Ponderosa Reservoir dam. 485 Comment
  CHSC111350  Trifolium dubium Lowell Ahart 2012-5-2 17970 Butte On damp dark clay soil, 50 yards south of the fence, west of the Government Pole Line, Upper Bidwell Park, about 1 mile east of Chico. 85 Comment
  CHSC114150  Trifolium dubium G. K. Helmkamp; E. A. Helmkamp 2010-4-17 15884 Placer Sierra Nevada Mountain Foothills: Rattlesnake Bar Road, 1.9 miles southwest of its junction with CA-49 near Pilot Hill. 314 Comment
  CHSC115307  Trifolium dubium Lowell Ahart 2015-5-9 20150 Sierra On the south side of the Canyon Creek Trail, trail on the north side of the North Fork of the Yuba River, about 300 yards west of Highway 49, about one mile west of Indian Valley. Mixed Green Ever Forest. 692 Comment
  CHSC116657  Trifolium dubium Lowell Ahart; Josephine Guardino 2016-4-19 20768 Contra Costa Undesignated section of Canada de Los Vaqueros Land Grant. Along the sides of the dirt roads, 1.8 miles (air) northwest of Los Vaqueros Reservoir Marina, 2.1 miles (air) southwest of Los Vaqueros Reservoir Dam, approximately 25 miles (air) southwest of Stockton. 160 Comment
  CHSC117852  Trifolium dubium L. P. Janeway 2016-5-9 11945 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South Fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Ponderosa Way and Road 19N19. 701 Comment
  CHSC27999  Trifolium dubium M. S. Taylor 1978-7-21 1808 Butte On n side of Oroville-Quincy Hwy, ca. 9 mi ne of Lake Madrone. 914 Comment
  CHSC29281  Trifolium dubium R. A. Schlising 1979-4-21 3369 Butte Richvale vernal pools; 1/4 mile S of jct Hwy 162 (E to Oroville) and Highway 99. Along latter and across from Thermalito Afterbay. Comment
  CHSC30645  Trifolium dubium M. S. Taylor; R. Schlising, L. Ahart 1980-5-31 2748 Butte Kunkle Reservoir, on e side of Pentz-Magalia Hwy, ca. 2 mi se of Paradise. 441 Comment
  CHSC31758  Trifolium dubium L. Ahart 1975-5-12 770 Butte Near edge of small wash. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC34672  Trifolium dubium M. S. Taylor 1981-5-6 3621 Butte SW facing slope, wet meadow, w side of rd leading to Jackson Ranch, ca. 1 mi sw of its jct with 21N25Y.1, ca. 5 air mi n of Feather Falls. 1127 Comment
  CHSC35548  Trifolium dubium James P. Smith 1973-5-5 6544 Siskiyou Scott Bar along the Scott River. Comment
  CHSC38149  Trifolium dubium J. D. Jokerst 1983-5-12 1761 Butte Top of North Table Mountain, ca. 1.5 mi North of Cherokee Rd. Comment
  CHSC41457  Trifolium dubium Lowell Ahart 1986-5-20 5277 Butte Along the edge of the road that goes to the Forbestown Reservoir, about 1 mile south-west of the Forbestown Reservoir, about 3 1/2 miles north-east of Forbestown. 609 Comment
  CHSC42541  Trifolium dubium Lowell Ahart 1987-5-6 5527 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC4556  Trifolium dubium J. E. Bowlin 1967-7-18 60 Siskiyou On roadside, ca. 4 mi w of Mount Shasta Ski Bowl. 2133 Comment
  CHSC48578  Trifolium dubium Vernon Oswald 1986-4-30 1992 Butte Upper Bidwell Park, Chico, along Yahi Trail just south of Parking Area N at Salmon Hole. 158 Comment
  CHSC50041  Trifolium dubium Lowell Ahart 1990-4-15 6456 Butte 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. 289 Comment
  CHSC56983  Trifolium dubium Steven Triano 1988-4-29 89 Amador Growing around the perimeter of a livestock watering hole at the headwaters of Dry Creek, ca. 250 ft sw of Hwy. 49 and 0.7 mi s of its jct. with Hwy. 16. 213 Comment
  CHSC64537  Trifolium dubium Vernon H. Oswald; Lowell Ahart 1995-4-10 6622 Tehama Dales Lake Ecological Reserve. Cascade Range Foothills. W side of Manton Rd. (A6) ca. 1 mi n of Dales Station on Hwy. 36, ca. 14 mi ne of Red Bluff. Growing along the edge of Manton Rd. s of the culvert under the road, in the s tip of the reserve. 207 Comment
  CHSC65562  Trifolium dubium L. P. Janeway 1995-6-6 4773 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 1054 Comment
  CHSC65920  Trifolium dubium Vernon H. Oswald; Lowell Ahart 1996-4-15 7373 Tehama Thomas Creek Ecological Reserve. CDFG parcel on the S side of Gyle Rd. NW of Corning. Northwest side of Sacramento Valley. Growing upland along the pipeline ca. 0.1 mi N of the S boundary. 102 Comment
  CHSC65957  Trifolium dubium Vernon H. Oswald; Lowell Ahart 1996-4-23 7418 Tehama Hog Lake Plateau. BLM parcel along Hwy. 36 NE of Red Bluff. Cascade Range Foothills. Locally common in upland along the W shore of Hog Lake. 265 Comment
  CHSC71176  Trifolium dubium Lowell Ahart 1998-6-9 7979 Butte On the side of the lone oak tree, about 50 yards northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC77989  Trifolium dubium Lowell Ahart 2000-5-13 8342 Butte On the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC78845  Trifolium dubium Julie Cunningham; Jenny Marr, Caroline Warren 1998-5-11 Tehama Vicinity of Round Valley Road and Newville Road (Garland Road). 280 Comment
  CHSC79167  Trifolium dubium Beecher Crampton 1956-5-7 3353 Sacramento 5 miles north of Galt. Junction Arno Road and US Hwy. 99. Comment
  CHSC81375  Trifolium dubium L. P. Janeway 1996-5-20 4973 Plumas Northern High Sierra Nevada. Soda Creek, along Road 25N22 200 ft northwest of Hwy 70 and East Branch North Fork Feather River. 890 Comment
  CHSC82253  Trifolium dubium Lowell Ahart 2002-5-5 9600 Nevada On the south side of McCortney Road, 20 yards south of the bridge across Rock Creek, about 3 miles (air) northeast of Camp Far West Dam. 106 Comment
  CHSC82300  Trifolium dubium Lowell Ahart 2002-4-27 9563 Tehama In the road curve, on the north side of Road M2, about 20 yards northwest of the dirt road that leads to the tower, about 8 miles west of Paskenta. 609 Comment
  CHSC82325  Trifolium dubium Lowell Ahart 2002-5-4 9577 Nevada About 15 yards south of Perimeter Road, about 30 yards east of the private driveway, about 2.8 miles east of the intersection of Perimeter Road and White Oak Drive, about 5 miles (air) east of Camp Far West Dam, about 1 1/2 miles (air) southeast of Rock Mountain. 243 Comment
  CHSC82433  Trifolium dubium Lowell Ahart 2002-5-7 9640 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CHSC83887  Trifolium dubium Lowell Ahart; John Dittes, Daphne Christopher, Hannah Stevens 2003-4-17 10107 Tehama Along the trail, on the north side of Dye Creek, about 1/2 mile east of the Dye Creek buildings, Dye Creek Preserve, about 6 miles (air) northeast of Los Molinos. 174 Comment
  CHSC84058  Trifolium dubium Lowell Ahart; John Dittes 2003-5-22 10183 Shasta Just west of the gate, on the road, on the south side of the Coleman Canal, 2.8 miles (air) west-southwest of Darah Springs State Fish Hatchery, about 12 miles (air) east-northeast of Cottonwood. 271 Comment
  CHSC86042  Trifolium dubium Jenny Marr; Caroline Warren 1998-4-28 Tehama Vicinity of upper North Fork Stony Creek, Newville Road, and Round Valley Road. 198 Comment
  CHSC88589  Trifolium dubium L. P. Janeway; Gail Kuenster 2004-6-24 8176 Trinity Klamath Ranges. Large floodplain ('Grass Valley') on south side of Trinity River just east of Grassy Valley Creek. 'Hamilton Ranch. 535 Comment
  CHSC90823  Trifolium dubium Lowell Ahart 2005-5-2 11761 Butte Overflow area on 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. 25 Comment
  CHSC9290  Trifolium dubium G. Strausbaugh 1970-5-24 64 Shasta Beside seepage stream below cutbank w side of boat launching ramp at Whiskey Creek Marina. 370 Comment
  CHSC94876  Trifolium dubium Lowell Ahart 2006-6-15 12777 Glenn On the west side of the creek, about 30 yards south of the ford across Stony Creek (Forest Road 18N03), about 2 miles (air) northeast of the North Fork Campground, about 5 1/4 miles (air) west-northwest of Stonyford. 595 Comment
  CHSC96466  Trifolium dubium Lowell Ahart; Brian Williams 2007-4-13 13667 Placer Open pasture fields, about 1/2 mile south of the Manzanita Cemetery, about 1/2 mile west of Gladding Road, about 2 3/4 miles north of Lincoln. 43 Comment
  CHSC96562  Trifolium dubium L. P. Janeway 2006-4-30 8565 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  CHSC96795  Trifolium dubium Lowell Ahart 2007-4-30 13699 Butte On both sides of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir. 358 Comment
  CHSC97479  Trifolium dubium Lowell Ahart 2007-5-12 13791 Yuba About 20 yards northeast of the second power tower, about 400 yards north of Fruitland Road, about 13 miles (air) northeast of Marysville. 28 Comment
  CHSC98969  Trifolium dubium Lowell Ahart 2008-5-12 14756 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  HREC826 Image available Trifolium dubium A. H. M. June 1963 HF 184 Mendocino Mendocino County Comment
  HREC827 Image available Trifolium dubium A. H. M. 1964-5-21 HF 169 Mendocino Vasser Corner - Hopland Field Station Comment
  HSC100826  Trifolium dubium Lowell Ahart 2007-5-12 13791 Yuba ~20 yd. NE of the second power tower, ~400 yd. N of Fruitland Rd., 13 (air) mi. NE of Marysville. 28 Comment
  HSC104254  Trifolium dubium G. K. Helmkamp, Amy Barnes 2010-5-7 15970 Calaveras Sierra Nevada Mountains Foothills; along CA-49, 0.4 mi. N of its junction with CA-12, vicinity of San Andreas 233 Comment
  HSC104458  Trifolium dubium Jeff Barrett, Keleigh Deitsch, Tessa Purdy 2014-4-13 11 Humboldt Samoa Peninsula, Fairhaven, along south side of Bay Street 5 Comment
  HSC15115  Trifolium dubium Norman H. Moe 1962-5-19 Humboldt Lanphere's Place Comment
  HSC15116  Trifolium dubium Harvey Doerksen 1962-5-8 18 Humboldt 3 mi. W of Blue Lake, fork Mad River and Essex Creek Comment
  HSC38929  Trifolium dubium Linda M. Barker 1976-5-13 1476 Humboldt 3 mi. W of Arcata. Comment
  HSC39836  Trifolium dubium Peter Sorensen 1976-6-11 Humboldt Woodley Island Comment
  HSC65608  Trifolium dubium Thomas Wood 1979-8-9 244 Modoc Dirt road along Bidwell Creek, 2.9 mi. NW of junction with Co. Hwy. 2, N of Ft. Bidwell 1509 Comment
  HSC70358  Trifolium dubium M. A. Baker 1980-6-7 1867 Humboldt Near Ammon Creek 732 Comment
  HSC84697  Trifolium dubium Clare R. Wheeler 1980-4-28 1415 Mendocino Mendocino Pass Rd., 5.5 mi. E of Covelo 427 Comment
  JEPS100102  Trifolium dubium G. Smick 2003-5-8 GAS 178 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  JEPS100104  Trifolium dubium G. Smick GAS 108 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  JEPS103469  Trifolium dubium Lowell Ahart 2002-5-4 9577 Nevada About 15 yards S of Perimeter Road, ca 30 yards E of the private driveway, ca 2.8 miles E of the intersection of Perimeter Road and White Oak Drive, ca 5 miles (air) E of Camp Far West Dam, ca 1 1/2 miles (air) SE of Rock Mountain. 243 Comment
  JEPS104216  Trifolium dubium Lowell Ahart 2003-5-22 10183 Shasta Just w of the gate, on the road, on the south side of the Coleman Canal, 2.8 mi (air) wsw of Darah Springs State Fish Hatchery, ca 12 mi (air) ene of Cottonwood. 271 Comment
  JEPS106804  Trifolium dubium Jake Ruygt 1987-4-22 1960 Napa DFG property near Buchli Station 1 Comment
  JEPS106805  Trifolium dubium Jake Ruygt 1996-5-5 3640 Napa Butts Canyon Road at James Creek Road; field to SE. 210 Comment
  JEPS108748  Trifolium dubium Lowell Ahart 2006-6-15 12777 Glenn On the west side of the creek, about 30 yards south of the ford across Stony Creek (Forest Road 18N03), about 2 miles (air) northeast of the North Fork Campground, about 5 1/4 miles (air) west-northwest of Stonyford 595 Comment
  JEPS109730  Trifolium dubium Dean W. Taylor 2002-5-15 18052 Mariposa Foresta, little used dirt road on far western margin of the settled area, Yosemite National Park 1341 Comment
  JEPS113120  Trifolium dubium Lowell Ahart, Brian Williams 2007-4-13 13667 Placer Open pasture fields, about 1/2 mile south of the Manzanita Cemetery, about 1/2 mile west of Gladding Road, about 2 3/4 miles north of Lincoln 43 Comment
  JEPS113279  Trifolium dubium Lowell Ahart 2007-4-30 13699 Butte On both sides of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir 358 Comment
  JEPS113411  Trifolium dubium Lowell Ahart 2007-5-12 13791 Yuba About 20 yards northeast of the second power tower, about 400 yards north of Fruitland Road, about 13 miles (air) northeast of Marysville 28 Comment
  JEPS114723  Trifolium dubium Lowell Ahart 2008-5-12 14756 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 258 Comment
  JEPS115620  Trifolium dubium Lowell Ahart 2009-5-15 15688 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  JEPS117538  Trifolium dubium Lowell Ahart 2010-6-9 16784 Butte About 50 yards west of the fence, about 1/4 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 3/4 miles (air) northeast of Oroville 405 Comment
  JEPS118317  Trifolium dubium Lowell Ahart 2011-6-7 17398 Yuba West of a willow shrub, just south of the huge gravel bar along the Yuba River, about 150 yards west of the south end of Parks Bar Bridge (Highway 20), about 15 miles (by air) northeast of Marysville 66 Comment
  JEPS118998  Trifolium dubium Dana York 1997-5-1 1754 Fresno Ca. 23 km E-SE of Fresno (FSC), km E of Centerville, Friant-Kern Canal siphon at the Kings River. Comment
  JEPS119706  Trifolium dubium Lowell Ahart 2012-5-2 17970 Butte West of the Government Pole Line, Upper Bidwell Park, about 1 mile east of Chico. Comment
  JEPS124090  Trifolium dubium Lowell Ahart 2015-5-9 20150 Sierra About 300 yards west of Highway 49, about one mile west of Indian Valley. Comment
  JEPS126448  Trifolium dubium CNPS Field Staff 2015-4-21 SSNF 1279 Madera Private Ranch. Comment
  JEPS127103  Trifolium dubium Lowell Ahart, Josephine Guardino 2016-4-19 20757 Contra Costa 1.8 miles (air) northwest of Los Vaqueros Reservoir Marina, 2.1 miles (air) southwest of Los Vaqueros Reservoir Dam, approximately 25 miles (air) southwest of Stockton. Undesignated section of Canada de Los Vaqueros Land Grant, Byron Hot Spring USGS 7.5' Quad. Comment
  JEPS29791  Trifolium dubium Rimo Bacigalupi and L. R. Heckard 1962-5-29 8536 El Dorado head Spanish Ravine (southern outskirts of Placerville) 640 Comment
  JEPS65856  Trifolium dubium Miss Agnes Erickson 1931-4-19 San Francisco Fort Funston Comment
  JEPS65857  Trifolium dubium Joseph P. Tracy 1916-5-31 4699 Humboldt along Eel River (from South Fork to Scotia); Northern Coast Ranges 60 Comment
  JEPS66053  Trifolium dubium W. L. Jepson 1902-6-24 1923 Humboldt Eureka to Arcata Comment
  JEPS79998  Trifolium dubium Joseph P. Tracy 1925-5-17 6971 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  JEPS88360  Trifolium dubium Vernon H. Oswald and Lowell Ahart 1996-4-23 7418 Tehama BLM parcel along Hwy. 36 n.e. Red Bluff (upland along the w. shore of Hog Lake); Cascade Range Foothills, Hog Lake Plateau, Hog Lake 265 Comment
  JEPS94823  Trifolium dubium Lowell Ahart 1998-6-9 7979 Butte about 7 air mi n Oroville (on s side of the ione oak tree, about 50 yards nw of the cow chute along Cherokee Road); North Table Mountain 403 Comment
  JEPS98421  Trifolium dubium Lowell Ahart 2000-5-13 8342 Butte 5 air miles SW of Oroville (S side of access road to boat ramp at the Thermalito Afterbay, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  JROH2277  Trifolium dubium John H. Thomas 1977-5-18 18614 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2279  Trifolium dubium John Hunter Thomas 1978-4-25 19150 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2280  Trifolium dubium John Hunter Thomas 1980-4-10 19878 San Mateo Jasper Ridge Biological Preserve, Stanford University; near Searsville Lab Comment
  OBI11929  Trifolium dubium David J. Keil 1977-5-27 s.n. San Luis Obispo Cal Poly campus in lawn near main Science bldg Comment
  OBI12689  Trifolium dubium Carl B. Wolf 1937-6-15 8836 Del Norte Redwood Hwy, 1/4 mi S of mouth of Wilson Crk 8 Comment
  OBI60837  Trifolium dubium David J. Keil, with V. L. Holland 1994-5-17 24464 Santa Cruz Area of proposed Buena Vista Country Club. Along s side of Highway 1, ca. 2 miles w of Watsonville Airport, ca. 1.5 miles e of La Selva beach. 143 Comment
  OBI74589  Trifolium dubium David J. Keil, with Mike Mattina 2010-5-31 30807 San Luis Obispo Western slope of Santa Lucia Mts. Los Padres National Forest. Trail system east of Ragged Point. Comment
  OBI82141  Trifolium dubium George K. Helmkamp, Mary Alice Barnes 2013-5-3 20488 Placer Northern Sierra Nevada Mountains Foothills: Mosquito Ridge Road, 4.7 miles south of Forest Hill Road, 1.8 mi. east (92 deg. ) of Foresthill 829 Comment
  PGM1033  Trifolium dubium Helen Lind 1972-6-6 Monterey Monterey Peninsula, Monterey, Iris Canyon Rd junction with Via Mirada Comment
  PGM1326  Trifolium dubium Helen Lind 1975-6-16 Monterey Santa Lucia Mountains, Carmel Valley Robinson Cyn, Above Lake by San Carlos Ranch Hdq Comment
  POM118629  Trifolium dubium Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  POM19295  Trifolium dubium H. M. Hall 1916-6-15 10206 Nevada Near Nevada City 823 Comment
  POM19412  Trifolium dubium L. R. Abrams 6099 Humboldt Arcata to Trinidad Comment
  POM313548  Trifolium dubium P. B. Kennedy 1929-6-12 10323 Humboldt Eureka. Comment
  RSA0042823  Trifolium dubium George K. Helmkamp, Mary Alice Barnes 2013-5-3 20475 Placer Mosquito Ridge Road, 1.1 miles south of Forest Hill Road 962 Comment
  RSA0089805  Trifolium dubium Dean Wm. Taylor, Alison E. L. Colwell 2009-6-15 20660 Mariposa Yosemite National Park: Yosemite Valley, Yosemite Village, area between front entrance of Post Office and Degnan's Deli. 1188 Comment
  RSA181490  Trifolium dubium I. L. Wiggins 1963-6-30 18301 Tuolumne Along Bret Harte Drive, Twain Harte. 1128 Comment
  RSA215890  Trifolium dubium J. T. Howell 1957-5-26 32466 San Francisco North base of Lone Mountain. Comment
  RSA226762  Trifolium dubium I. L. Wiggins 1968-6-19 20992 Tuolumne Along Bret Harte Drive, Twain Harte. 1113 Comment
  RSA349492  Trifolium dubium H. M. Pollard 1967-6-11 s.n. Santa Barbara On Garden Street north of and near Micheltorena Streert corner. Comment
  RSA47572  Trifolium dubium L. Beane, Lois E. James 1949-5-11 2042 Mendocino Fort Bragg Comment
  RSA714681  Trifolium dubium A. C. Sanders 2003-5-1 26288 Los Angeles San Gabriel Valley: Irwindale, near boundary of Azusa, south side of Montoya St. just east of Irwindale Ave., south of I-210 171 Comment
  RSA725058  Trifolium dubium L. P. Janeway 2006-4-30 8565 Butte Cascade range Foothills. East edge of city of Chico; northwest side of Humbolt Road 2.4 km northeast of Bruce Road. 149 Comment
  RSA748975  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2007-4-30 11894 El Dorado hiking trail leaving from CA-49, 3.4 miles northwest of Placerville 511 Comment
  RSA753340  Trifolium dubium Jeannie Gregory, Victoria Marshall 2009-6-30 3244 San Diego Mesa Grande, The Nature Conservancy, Wheatly Property, along S side of Mesa Grande Road, 2.5 miles W of intersection Pala Road and Hwy 79 (Morettis Junction). 1035 Comment
  RSA755041  Trifolium dubium L. Ahart 2009-5-15 15688 Butte E side of Big Chico Creek, about 50 yards W of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile W of Highway 32, about 10 miles NE of Chico. 204 Comment
  RSA755716  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2009-4-21 14546 El Dorado along CA-193, 1.1 miles south of the South Fork American River at Chili Bar 381 Comment
  RSA755992  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2009-6-3 14896 El Dorado Forbay Road, 4.7 miles northwest of its junction with Pony Express Trail in Pollock Pines 945 Comment
  RSA781116  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2010-4-23 15928 El Dorado Salmon Falls Road at the Salmon Falls crossing of the American River 157 Comment
  RSA781179  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2010-4-17 15884 El Dorado Rattlesnake Bar Road, 1.9 miles southwest of its junction with CA-49 near Pilot Hill 314 Comment
  SBBG115730  Trifolium dubium B. Crampton 1953-5-11 1244 Stanislaus railroad ca. 2.5 mi S of Oakdale, on Waterford Rd Comment
  SBBG118056  Trifolium dubium M. Wetherwax, E. Painter 2000-4-19 CR 25 San Luis Obispo near W Perimeter Rd, ca. 1.5 air km NW of intersection with Generals Rd; Camp Roberts 220 Comment
  SBBG118057  Trifolium dubium E. Painter, Wetherwax, D. Keil 2000-4-18 SLO 96 San Luis Obispo seep E of pipe from water tower on Cerro Romualdo; Camp San Luis Obispo 120 Comment
  SBBG119605  Trifolium dubium A. C. Sanders 2003-5-1 26288 Los Angeles Irwindale, near boundary of Azusa, S side of Montoya St just E of Irwindale Ave, S of interstate 210 171 Comment
  SBBG129036  Trifolium dubium G. K. Helmkamp, E. A. Helmkamp 2012-5-31 19086 Calaveras CA-26, 2.2 km NE (63 deg) of Glencoe, 0.8 mi W of the crossing over the S Fork Mokelumne River 741 Comment
  SBBG23337  Trifolium dubium H. M. Pollard 1965-6-4 Santa Barbara East Alameda Park lawns near corner of Micheltorena and Garden Streets; Santa Barbara Comment
  SBBG28085  Trifolium dubium H. M. Pollard 1967-6-11 Santa Barbara Garden St N of and near Micheltorena St corner; Santa Barbara Comment
  SBBG35944  Trifolium dubium H. M. Pollard 1969-6-2 Santa Barbara Alameda Park, Sola Street W of Santa Barbara St Comment
  SBBG36008  Trifolium dubium H. M. Pollard 1952-6-23 Ventura California Preparatory School; Ojai Comment
  SBBG3817  Trifolium dubium C. F. Smith 1951-5-29 3169 Santa Barbara Santa Barbara Free Public Library; Santa Barbara Comment
  SBBG38388  Trifolium dubium H. M. Pollard 1963-6-7 Santa Barbara Garden St near Arrellaga St; Santa Barbara Comment
  SBBG49309  Trifolium dubium P. T. Hom 1974-5-23 39 Mariposa Hwy 49 at the Fresno River ca. 6.1 mi N of Ahwahnee Comment
  SBBG49313  Trifolium dubium P. T. Hom 1974-6-1 53 Ventura Ozena Station 1463 Comment
  SBBG67186  Trifolium dubium C. F. Smith 1951-5-29 3169 Santa Barbara Santa Barbara Free Public Library; Santa Barbara Comment
  SBBG83593  Trifolium dubium C. F. Smith 1963-6-27 Santa Barbara Nora Morres lawn, Puesta del Sol Rd, near Santa Barbara Museum of Natural History; Santa Barbara Comment
  SD186223  Trifolium dubium A. C. Sanders 2003-5-1 26288 Los Angeles Irwindale, near boundary of Azusa, south side of Montoya St. just east of Irwindale Ave. 170 Comment
  SD194134 Image available Trifolium dubium Jeannie Gregory, Victoria Marshall 2009-6-30 3244 San Diego H17, Mesa Grande, The Nature Conservancy, Wheatly Property, along S side of Mesa Grande Road, 2.5 mi W of intersection Pala Road and Hwy 79 (Morettis Junction). 1035 Comment
  SD212620  Trifolium dubium G. K. Helmkamp, Elizabeth Helmkamp 2006-5-9 10334 A Amador Grass Valley Creek, 1.2 miles east of Pine Grove along Highway CA 88. 762 Comment
  SD237451  Trifolium dubium G. K. Helmkamp, E. A. Helmkamp 2010-4-23 15928 Placer Sierra Nevada Mountains Foothills: Salmon Falls Road at the Salmon Falls crossing of the American River (Pilot Hill 7.5'Q) 156 Comment
  SD239756  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2012-4-14 18760 Butte Northwestern Sacramento Valley: Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi ENE (82a^z) of Gridley. 91 Comment
  SD243144  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2011-4-10 17152 Placer Sacremaento Valley: along Riosa Road at the east edge of the village of Sheridan (Lincoln 7.5'Q) 41 Comment
  SD248417  Trifolium dubium George K. Helmkamp, Mary Alice Barnes 2013-5-3 20475 Placer Foothills, northern Sierra Nevada Mountains: Mosquito Ridge Road, 1.1 miles south of Forest Hill Road. 961 Comment
  SD254627  Trifolium dubium George K. Helmkamp, Mary Alice Barnes 2013-5-17 20641 Calaveras Northern Sierra Nevada Mountains Foothills, along CA-26, 0.3 mile northeast of Paloma Road, SW of Mokelumne Hill. 505 Comment
  SD42231  Trifolium dubium Carl B. Wolf 1937-6-15 8836 Del Norte Redwood Highway, Ao mile south of mouth of Wilson Creek 7 Comment
  SD87601  Trifolium dubium F. W. Peirson 1923-7-11 3622 Humboldt Coast, 20 miles north of Eureka Comment
  SDSU19439  Trifolium dubium Jeannie Gregory, Victoria Marshall 2009-6-30 3244 San Diego Mesa Grande, Nature Conservancy (Wheatly Property), 2 miles W of Morettis Junction (Pala Road & Hwy 79) E of Mesa Grande Road, 2.5 miles S of dam at Lake Henshaw 1035 Comment
  SEINET11261730  Trifolium dubium George Helmkamp, E. A. Helmkamp 2012-5-15 18973 Calaveras Northern Sierra Nevada Mountains Foothills: along Murray Creek Road (Murraydale Ln.), 1.4 miles east of Pope Road in San Andreas (San Andreas 7.5' Q.); 0 387 Comment
  SEINET11261870  Trifolium dubium George Helmkamp 2010-3-26 15776 Sacramento Sacramento Valley/lower Sierra Nevada Foothills: along CA-16 (Jackson Rd.), .2 mile west of the Amador County line (Carbondale 7.5 Q.).; 0 82 Comment
  SEINET13203101 Image available Trifolium dubium George K. Helmkamp, Amy Barnes 2014-1 22781 Placer Sierra Nevada Mountains Foothills: Old Forest Hill Road, 0.4 mile northeast of its junction with CA-49 at North Fork American River (Auburn 7.5' Q.) 290 Comment
  SEINET13276682 Image available Trifolium dubium George K. Helmkamp, Mary Alice Barnes 2013-1 20641 Calaveras Northern Sierra Nevada Mountains Foothills: along CA-26, 0.3 mile northeast of Paloma Road, SW of Mokelumne Hill (Mokelumne Hill 7.5' Q.) 504 Comment
  SEINET3245951  Trifolium dubium G. K. Helmkamp, E. A. Helmkamp 2010-1 15928 Placer Sierra Nevada Mountains Foothills: Salmon Falls Road at the Salmon Falls crossing of the American River (Pilot Hill 7.5') 157 Comment
  SEINET3271593 Image available Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2007-4-26 11822 Amador Foothills, northern Sierra Nevada Mountains; along Calif. E-16, 0.7 mile south of River Pines 610 Comment
  SEINET3282788 Image available Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2007-4-30 11894 El Dorado Foothills, Northern Sierra Nevada Mountains; hiking trail leaving from CA-49, 3.4 miles northwest of Placerville. 511 Comment
  SEINET3821628 Image available Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2010-3-26 15776 Sacramento Sacramento Valley/lower Sierra Nevada Foothills, along CA-16 (Jackson Rd.), 0.2 mile west of the Amador County line (Carbondale 7.5' Q) 82 Comment
  SEINET3860175  Trifolium dubium George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16125 El Dorado Sierra Nevada Mountains Foothills: Slug Gulch Road, 2.9 miles east of its junction with Perry Creek raod.; 0 1012 Comment
  SEINET4138072 Image available Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2011-6-17 17560 Calaveras Northern Sierra Nevada Mountain Foothills: Winton Road, 3.7 miles NE of CA-26 at West Point 1012 Comment
  SEINET4560795  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2011-1 17332 Calaveras Northern Sierra Nevada Mountains: Rail Road Flat Road, 1.2 miles south of its junction with Ridge Road, 10.1 mi. ENE (83 degrees) of Mokelumne Hill. 854 Comment
  SEINET7865170 Image available Trifolium dubium George K. Helmkamp, Mary Alice Barnes 2013-5-3 20475 Placer Foothills, northern Sierra Nevada Mountains; Mosquito Ridge Road, 1.1 miles south of Forest Hill Road 962 Comment
  SEINET8472500  Trifolium dubium D. W. Taylor 2009-6-15 20660 Mariposa Yosemite Valley, Yosemite Village, area between front entrance of Post Office and Degnan's Deli. 1189 Comment
  UC1026471  Trifolium dubium Peter Rubtzoff 1951-7-14 439 Sonoma near Forestville (s half of lower marsh, near hwy); Pitkin Marsh Comment
  UC1106245  Trifolium dubium John Thomas Howell 1946-5-26 21949 Marin Inverness Comment
  UC1181401  Trifolium dubium George Bacigalupi 1960-5-1 San Francisco opposite San Francisco State College (70 Denslow Dr) Comment
  UC1197051  Trifolium dubium Joseph P. Tracy 1914-6-14 4502 Humboldt near Hydesville; Northern Coast Ranges 60 Comment
  UC1197052  Trifolium dubium Joseph P. Tracy 1923-6-17 6267 Humboldt Dows Prairie Northern Coast Ranges 60 Comment
  UC1223466  Trifolium dubium Joseph P. Tracy 1935-5-25 13830 Humboldt Blocksburg Comment
  UC1223467  Trifolium dubium Joseph P. Tracy 1939-4-29 16261 Humboldt Orleans 121 Comment
  UC1223468  Trifolium dubium Joseph P. Tracy 1948-5-31 18024 Humboldt Blocksburg Comment
  UC1223469  Trifolium dubium Joseph P. Tracy 1948-6-10 180066 Humboldt w Trinidad (beach) 3 Comment
  UC149767  Trifolium dubium Harley P. Chandler May 1901 1127 Humboldt Eureka North Coast Ranges, Humboldt Bay 30 Comment
  UC1541585  Trifolium dubium H. E. and S. T. Parks June 1943 24259 Del Norte Smith River 121 Comment
  UC1542872  Trifolium dubium Harold E. Parks May 1934 4324 Humboldt Spruce Cove Trinidad Comment
  UC1543238  Trifolium dubium Donald G. Nelson 1937-5-23 532 a Alameda n Edwards Athletic Field (along path through Monterey pines to footbridge); UCB campus Comment
  UC1583636  Trifolium dubium David Keil with Mark Meredith 1984-4-14 18123 San Luis Obispo s Arroyo de la Cruz (ridge system, n of San Simeon) Comment
  UC1618358  Trifolium dubium Barbara Ertter, Chris Thayer 1993-5-7 11713 Contra Costa 1/2 mi n of Vollmer (=Bald) Peak in East Bay Municipal Utilities District land e of Tilden Park (s of Wildcat Canyon Road); East Bay Municipal Utilities District land Comment
  UC162778  Trifolium dubium J. P. Tracy 1900-6-23 857 Humboldt immediate vicinity Eureka 0 Comment
  UC16502  Trifolium dubium Joseph Burtt Davy and Walter C. Blasdale 1899-6-29 5923 Del Norte Crescent City Comment
  UC16503  Trifolium dubium Joseph Burtt Davy and Walter C. Blasdale 1899-6-17 5602 Humboldt Arcata Comment
  UC16504  Trifolium dubium Joseph Burtt Davy and Walter C. Blasdale 1899-6-15 5529 Humboldt near Scotia Comment
  UC165506  Trifolium dubium W. P. Gibbons 1896-1 Unknown Mt. Diablo Base, W. 121 degrees Comment
  UC1792820  Trifolium dubium A. C. Sanders 2003-5-1 26288 Los Angeles San Gabriel Valley: Irwindale, near boundary of Azusa, south side of Montoya St. just east of Irwindale Ave., south of I-210 170 Comment
  UC1795665  Trifolium dubium Barbara Ertter, Mary Bowerman et al. 1995-5-7 14023 Contra Costa Three Springs Trail on northeast side of Mt. Diablo southeast of Clayton, along road through annual grassland with scattered blue oak south of Marsh Creek Road summit. 304 Comment
  UC179921  Trifolium dubium Joseph P. Tracy 1914-7-4 4522 Humboldt between Korbel and Angels Ranch roadside; Northern Coast Ranges Comment
  UC194934  Trifolium dubium H. M. Hall 1916-6-15 10206 Nevada near Nevada City 822 Comment
  UC198658  Trifolium dubium Joseph P. Tracy 1913-5-31 4699 Humboldt along Eel River (Holmes Flat, from South Fork to Scotia); Northern Coast Ranges 60 Comment
  UC2061512  Trifolium dubium Dean G. Kelch 2016-3-30 16 .069 Solano Hills west of Cordelia, south of Red Top road. Comment
  UC280187  Trifolium dubium H. A. Walker 1921-5-21 Alameda s Campanile Comment
  UC303191  Trifolium dubium Joseph P. Tracy 1925-5-17 6971 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC631175  Trifolium dubium A. A. Heller 1919-5-24 13215 Nevada near Grass Valley Comment
  UC631194  Trifolium dubium Mrs. M. H. Manning 1900-1-1 Humboldt near Hupa Comment
  UC699612  Trifolium dubium Herman Schwartz 1944-5-10 Alameda in a yard Berkeley Comment
  UC727751  Trifolium dubium Milo S. Baker 1946-5-6 11376 Mendocino along East Rd; Potter Valley Comment
  UC746985  Trifolium dubium G. Thomas Robbins 1945-6-5 1971 El Dorado ne Smith Flat 701 Comment
  UC866758  Trifolium dubium Carl D. Duncan 1920-7-13 219 Mendocino road side in Fort Bragg Comment
  UC963858  Trifolium dubium H. E. and S. T. Parks 1943-6-1 24259 Del Norte Darlingtonia North Coast Ranges, Smith River 121 Comment
  UCD108818  Trifolium dubium Linda M. Barker 1976-5-13 1476 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UCD108820  Trifolium dubium Al Franklin 1987-5-1 87 -10 Placer 1.3 miles east of I-80, on Foresthill Road, just outside Auburn. 396 Comment
  UCD108821  Trifolium dubium Mary M. Hektner; Sue Dakuzaku, Cathy Hendel 1974-7-2 106 Sonoma Near State Highway 1, Sea Ranch, Unit 28 Owner's Map. Comment
  UCD108822  Trifolium dubium G. K. Helmkamp 2006-5-1 10282 El Dorado Northern Sierra Neveda. Corner of Pleasant Valley Road and Patterson Drive, W end of Diamond Springs. 536 Comment
  UCD108823  Trifolium dubium G. K. Helmkamp; Elizabeth Helmkamp 2006-5-9 10334 A Amador Northern Sierra Nevada. Grass Valley Creek, 1.2 miles east of Pine Grove along Hwy. CA-88. 762 Comment
  UCD108824  Trifolium dubium G. K. Helmkamp; Elizabeth Helmkamp 2006-5-11 10371 Nevada Northern Sierra Nevada Mountains. Cedarsong Road, 0.1 mile NE of CA-Hwy 49 (NW of Nevada City). 637 Comment
  UCD108825  Trifolium dubium G. K. Helmkamp; Elizabeth Helmkamp 2006-5-13 10453 Placer Northern Sierra Nevada. Ca. 4 air miles NE of Auburn, along an unnamed road to Lake Clementine, 1.2 miles N of Forest Hill Road. 422 Comment
  UCD108826  Trifolium dubium G. K. Helmkamp; Elizabeth Helmkamp 2006-5-18 10470 El Dorado Northern Sierra Nevada Foothills. Spring Valley; Telephone Ridge area, NW of Riverton. Brockliss Canyon Road, about 11 miles NW of junction with Meadowridge Road and Ice House Canyon Road (SSW of Union Valley Reservoir, ca. 1.4 air miles N of US Hwy 50). 1189 Comment
  UCD108827  Trifolium dubium G. K. Helmkamp; Elizabeth Helmkamp 2006-5-24 10551 El Dorado Northern Sierra Nevada Mountains. Junction of Ice House Canyon Road and West Meadows Road (SSW of Union Valley Reservior, just N of Hwy 50). 1067 Comment
  UCD108828  Trifolium dubium G. K. Helmkamp; Elizabeth Helmkamp 2007-4-20 11772 El Dorado Northern Sierra Nevada Mountains. Junction of Uhlenkamp Road and Pine Hill Road, N of Grass Valley Road and NW of Placerville. 401 Comment
  UCD108829  Trifolium dubium G. K. Helmkamp; E. A. Helmkamp 2007-4-26 11822 Amador Northern Sierra Nevada Mountains. Along CA E-16, 0.7 mile south of River Pines. 610 Comment
  UCD108830  Trifolium dubium G. K. Helmkamp; E. A. Helmkamp 2007-4-30 11894 El Dorado Northern Sierra Nevada Mountains. Hiking trail leaving from CA-49, 3.4 miles northwest of Placerville. 511 Comment
  UCD108869  Trifolium dubium A. C. Sanders 2003-5-1 26288 Los Angeles San Gabriel Valley. Irwindale, near boundary of Azusa, S side of Montoya Street, just E of Irwindale Ave., south of I-210. 170 Comment
  UCD108872  Trifolium dubium Clifton F. Smith 1951-5-29 3169 Santa Barbara Santa Barbara. Santa Barbara Free Public Library. Comment
  UCD111680  Trifolium dubium Christopher Mallek 2008-1 AC1- 4 Shasta Ash Creek. 876 Comment
  UCD112262  Trifolium dubium Christopher Mallek 2008-5-8 AC4- 29 Shasta Ash Creek. 876 Comment
  UCD117915  Trifolium dubium Rachel Westaby; Plant Biology 102 Collectors 2012-4-29 1 Napa Las Posadas State Experimental Forest. Near entrance gate on Las Posadas Rd., in between entrance and fire station. 520 Comment
  UCD118747  Trifolium dubium Katherine Graham; Plant Biology 102 Collectors 2012-5-5 7 Napa Las Posadas State Experimental Forest. Northeastern part of property, Recreation Flat, in main meadow, along oak woodland. 388 Comment
  UCD123123  Trifolium dubium Ellen Dean; K. Mawdsley, M. Starbuck,M. Luzan Anzola, P. Berry 2012-6-24 7375 Shasta Along Hwy 44, ca. 10 miles E of Shingletown. North and south sides of road. 1225 Comment
  UCD140605  Trifolium dubium Ellen Dean; T and M Starbuck, Davis Botanical Society 2013-4-6 7647 Sutter Sutter County; Sutter Buttes. Dean Ranch. Southwest of North Peak. 228 Comment
  UCD146737  Trifolium dubium Carol W. Witham 2003-4-26 966 Yolo DFG Tule Ranch vernal pools. Approximately 8 miles southeast of Davis. Southeast of the junctions of County Roads 38 and 105. 4 Comment
  UCD165126  Trifolium dubium Peter Rubtzoff 1974-4-17 7374 Sonoma Upper Green Valley Marsh. Comment
  UCD165162  Trifolium dubium Peter Rubtzoff 1974-5-25 7464 Sonoma Upper Green Valley Marsh. Comment
  UCD165183  Trifolium dubium Peter Rubtzoff 1974-6-4 7544 El Dorado The Georgetown, Sierra Nevada. U.C. Blodgett Forest Research Station, Bacchi Meadow. Comment
  UCD166122  Trifolium dubium Peter Rubtzoff 1972-6-23 6786 Sonoma Atascadero Creek Marsh. Comment
  UCD167338  Trifolium dubium James A. Neilson Jr. 1983-5-9 4091 Sonoma Mayacmas Mountains. About 3 mi north of beginning of Geysers-Healsderg Rd. (Exact location unknown. Coordinates estimated by label maker.) Comment
  UCD169279  Trifolium dubium Lowell Ahart 2007-5-12 13791 Yuba About 13 miles (air) northeast of Marysville. About 400 yards north of Fruitland Road, about 20 yards northeast of the second power tower. 28 Comment
  UCD18773  Trifolium dubium Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-13 66 Tehama along the Manton Rd. (A6), 2 mi past its intersection with Hwy 36, on a ridge past Dales Lake, Inks Creek site. Comment
  UCD18818  Trifolium dubium Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-24 123 Sacramento 2 mi. east of Sacramento-Amador county line along Hwy 104, follow dirt road for 2 mi. south, east of dirt road, Howard Ranch site. Comment
  UCD35041  Trifolium dubium Beecher Crampton 1995-5-30 10302 Sacramento 3 miles SE of Florin (Straight line), Vintage Park road just west of Bradshaw road. Comment
  UCD35064  Trifolium dubium Beecher Crampton 1994-5-4 10268 Sacramento 3 miles SE of Florin (direct line), Boswell drive and Vintage Park, just west of Bradshaw road. Comment
  UCD35632  Trifolium dubium Beecher Crampton 1959-5-21 5251 El Dorado Shingle Springs. Comment
  UCD35790  Trifolium dubium Beecher Crampton 1962-4-24 6282 Yuba Sierra Foothill Range Field Station. 5 miles E of Browns Valley. Comment
  UCD35932  Trifolium dubium Beecher Crampton 1953-4-13 1077 Sacramento Along Highway 16, about 2 miles E of Perkins. Comment
  UCD37218  Trifolium dubium Beecher Crampton 1958-6-9 4933 El Dorado 1.5 miles west of Garden Valley, road to Coloma. 579 Comment
  UCD37848  Trifolium dubium Beecher Crampton 1962-4-24 6249 Yuba 5 miles east of Brown's Valley, 2.5 miles north-northwest of Smartsville, University of California Foothill Field Station. Comment
  UCD37859  Trifolium dubium Beecher Crampton 1962-4-24 6265 Yuba 5 miles east of Brown's Valley, 2.5 miles north-northwest of Smartsville, University of California Foothill Field Station. Comment
  UCD38319  Trifolium dubium Beecher Crampton 1954-5-10 1840 Nevada 6 miles N of Nevada City, along Highway 49. Comment
  UCD38588  Trifolium dubium Beecher Crampton 1956-5-7 3353 Sacramento 5 miles north of Galt, junction Arno Road and US Highway 99. Comment
  UCD38710  Trifolium dubium Beecher Crampton 1957-6-11 4184 Marin 1.3 miles north of Muir Beach. Comment
  UCD39186  Trifolium dubium Beecher Crampton 1953-5-11 1244 Stanislaus Along railroad about 2.5 miles S of Oakdale, on Waterford Road. Comment
  UCD39210  Trifolium dubium Beecher Crampton 1953-5-26 1341 Placer 2 miles N of Lincoln, Chamberlain Ranch. Comment
  UCD41085  Trifolium dubium N. Nicola 2003-3-22 252 Yolo Eastern foothills of inner north coast range, Capay Valley. Cache Creek Riparian Preserve. Comment
  UCD41327  Trifolium dubium Tera Pitman; E. Dean, M. Bibbo, and A. Douglas 2004-5-1 2 Napa Southern end of McLaughlin UC Reserve, NE side of Knoxville-Berryessa Rd, W side of Knoxville Creek, 1 road mile S of the gate to old town of Knoxville. 353 Comment
  UCD46296  Trifolium dubium Jocelyn Brodeur; with Plant Biology 192 collection interns 2005-4-30 1 Sacramento Deer Creek Hills Reserve, north of Latrobe Rd., starting out along Latrobe 1.5 road miles W of intersection with Michigan Bar Rd. 113 Comment
  UCD46407  Trifolium dubium Carol Witham; Rod Ries 2005-4-30 s.n. Sacramento Deer Creek Hills Reserve, south of Latrobe Rd., starting out along Latrobe 1.5 road miles W of intersection with Michigan Bar Rd. 115 Comment
  UCD48978  Trifolium dubium S. Colby; L. Hanson, D. Bosworth, K. Sesser, and G. Belley 2001-4-14 8 Napa Quail Ridge Reserve, SE corner of Lake Berryessa, just W of Monticello Dam, E side of Decker Canyon about 150 m up Cut-Off Rd. from South Decker Canyon Rd. 182 Comment
  UCD48980  Trifolium dubium Anne Mini; K. McBride, S. Snow, and K. Ehmsen 2001-4-14 8 Napa Quail Ridge Reserve, SE corner of Lake Berryessa, just W of Monticello Dam, Decker Canyon, along South Decker Canyon Rd., just N of jct with Cut-Off Rd., near drainage by dilapidated buldings. 152 Comment
  UCD57288  Trifolium dubium Ellen Dean; C. Thomsen, S. Bledsoe, J. Alderson, M. Starbuck 2007-4-7 3659 Colusa BLM Payne Ranch. Craig Canyon. West of Hwy. 16, ca. 2 road miles south of junction of Hwy. 20 and Hwy. 16. Along unimproved road. 322 Comment
  UCD59325  Trifolium dubium Ellen Dean; Kate Mawdsley 2007-5-11 3749 Yolo Tuleyome Ireland Ranch. In inner coast range, northwest of the City of Winters, between Salt Creek and Enos Creek, just north of Wild Cow Mountain. Central part of ranch, along trail leaving loop road and heading east. 626 Comment
  UCD62172  Trifolium dubium B. Harbert 2007-5-3 18 Sacramento SACRAMENTO COUNTY: Cosumnes River Preserve, Howard Ranch, located east of Rancho Seco power plant and west of the Amador-Sacramento county line. North of Highway 104. Comment
  UCD75851  Trifolium dubium Eleftherios Dariotis; A. Norton, A. Verenkoff 2002-4-27 4 Solano NE of the town of Vacaville on the NW side of Hwy 80, near the Leisure Town Rd. exit, S side of Vaca Valley Parkway, just W of its intersection with Leisure Town Rd. 30 Comment
  UCD80311  Trifolium dubium CNPS SN Foothill Team 2006-5-24 SNFN 0391 a Mariposa Private Brown/Bonschu Property, just west of Hwy 49. 586 Comment
  UCD81015  Trifolium dubium Jose-Luis Rayas; with PLB 102 students 2009-4-26 7 Yolo Audubon Bobcat Ranch, lands to the north of Hwy 128 on north side of Putah Creek, downstream of Monticello Dam. Middle reaches of Bray Canyon. 129 Comment
  UCD83311  Trifolium dubium CNPS SSN-SJV Foothill Team 2008-7-2 343 Tulare Springville. River Ridge Ranch. 354 Comment
  UCD95078  Trifolium dubium Alina Downer; PLS 102 Plant Collection Interns 2011-4-30 1 El Dorado North of Cameron Park. Pine Hill Preserve. Kanaka Valley Unit. Kanaka Valley near main dirt road. 304 Comment
  UCR101649  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 1998-5-16 3744 San Mateo Portola Valley, Golden Hills Rd along Los Trancos Creek 107 Comment
  UCR126814  Trifolium dubium A. C. Sanders 2003-5-1 26288 Los Angeles San Gabriel Valley, Irwindale, near boundary of Azusa, south side of Montoya St. just east of Irwindale Ave., south of I-210 171 Comment
  UCR136529  Trifolium dubium Beecher Crampton 1958-6-9 4933 El Dorado Sierra Nevada Mountains, 1.5 miles west [southwest] of Garden Valley, road to Coloma 610 Comment
  UCR136585  Trifolium dubium Beecher Crampton 1957-6-11 4184 Marin San Francisco Bay, 1.3 miles north of Muir Beach 30 Comment
  UCR151588  Trifolium dubium Beecher Crampton 1954-5-10 1840 Nevada Northern Sierra Nevada Mtns., 6 miles north of Nevada City along Hwy 49, south slope of South Yuba River 549 Comment
  UCR161663  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2005-5-17 9493 Monterey Central Coast, 0.9 mi south of Plaskett (N of Gorda); along Calif. Highway 1 90 Comment
  UCR161681  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2005-5-17 9504 San Luis Obispo Central Coast, 2.5 mi WNW of San Simeon; along Calif. Highway 1 11 Comment
  UCR173186  Trifolium dubium George K. Helmkamp, Elizabeth Helmkamp 2006-5-24 10522 El Dorado Northern Sierra Nevada Foothills, NE of Georgetown; along Bottlehill Road, 1.4 mi. N of Wentworth Springs Road 1006 Comment
  UCR173252  Trifolium dubium George K. Helmkamp, Elizabeth Helmkamp 2006-5-13 10453 Placer Northern Sierra Nevada Foothills, c. 4 air mi. NE of Auburn, along an unnamed road to Lake Clementine, 1.2 mi. N of Forest Hill Road 422 Comment
  UCR173284  Trifolium dubium George K. Helmkamp, Elizabeth Helmkamp 2006-5-18 10470 El Dorado Northern Sierra Nevada Foothills, Spring Valley; Telephone Ridge area, NW of Riverton. Brockliss Canyon Road, about 11 mi. NW of junction with Meadowridge Road and Ice House Canyon Road (SSW of Union Valley Reservior, c. 1.4 air mi. N of US Hwy 50) 1189 Comment
  UCR173521  Trifolium dubium George K. Helmkamp, Elizabeth Helmkamp 2006-5-24 10551 El Dorado Northern Sierra Nevada Mountains, Junction of Ice House Canyon Road and West Meadows Road, SSW of Union Valley Reservoir, just N of US Hwy 50 1067 Comment
  UCR173585  Trifolium dubium George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10371 Nevada Northern Sierra Nevada Mtns., Cedarsong Road, 0.1 mi. NE of Calif. Hwy 49 (NW of Nevada City) 637 Comment
  UCR173600  Trifolium dubium George K. Helmkamp, Elizabeth Helmkamp 2006-5-4 10298 El Dorado Northern Sierra Nevada Mountains Foothills, east end of Diamond Springs, 0.1 mile north of the junction of Pleasant Valley Road and Calif. Hwy 49 543 Comment
  UCR173667  Trifolium dubium George K. Helmkamp, Elizabeth Helmkamp 2006-5-9 10334 A Amador Northern Sierra Nevada foothills, Grass Valley Creek, 1.2 miles east of Pine Grove along Calif. Hwy 88 762 Comment
  UCR174198  Trifolium dubium George K. Helmkamp, Elizabeth A. Helmkamp 2006-5-31 10604 El Dorado Northern Sierra Nevada foothills, Sly Park Road, 0.3 mile south of its junction with Mormon Emigrant Trail 1067 Comment
  UCR184853  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2007-4-26 11822 Amador Foothills, northern Sierra Nevada Mountains, along Calif. E-16, 0.7 mile south of River Pines 610 Comment
  UCR185342  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2007-4-20 11772 El Dorado Foothills, Northern Sierra Nevada Mountains, junction of Uhlenkamp Road and Pine Hill Road, north of Grass Valley Road and northwest of Placerville 401 Comment
  UCR188173  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2007-4-30 11894 El Dorado Foothills, Northern Sierra Nevada Mountains, hiking trail leaving from CA-49, 3.4 miles northwest of Placerville 511 Comment
  UCR188219  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2007-5-1 11912 El Dorado Foothills, Northern Sierra Nevada Mountains, access road to South Fork American River along CA-49, 4.4 miles northwest of Coloma 207 Comment
  UCR190668  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2007-5-23 12077 Placer Northern Sierra Nevada Mountains Foothills, junction of Iowa Hill Road and Finning Mill Road (U. S. F. S. Rd #10) in the Sugar Pine Recreation area 1137 Comment
  UCR191049  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2007-6-8 12285 El Dorado Northern Sierra Nevada Mountains, Bonetti Road, 1.9 miles south of Mormon Emigrant Trail, at the bridge over Diamond Creek 1143 Comment
  UCR194902  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2007-5-26 12126 Yuba Northern Sierra Nevada Mountains Foothills, along CA-49, 1.3 miles south of Camptonville 802 Comment
  UCR197238  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2008-4-25 13312 El Dorado Sierra Nevada Mountains Foothills, junction of Meadowbrook and Bear Creek Roads at Traverse Creek, south of Georgetown 674 Comment
  UCR197353  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2008-5-29 13523 Calaveras Sierra Nevada Mountains, along the north side of CA-4 (Ebbetts Pass Rd.) at Avery 1024 Comment
  UCR206108  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2009-6-3 14896 El Dorado Northern Sierra Nevada Mountains, Forbay Road, 4.7 miles northwest of its junction with Pony Express Trail in Pollock Pines 945 Comment
  UCR206297  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2009-5-29 14872 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs 530 Comment
  UCR206919  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2009-5-26 14805 B El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs 530 Comment
  UCR206960  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2009-5-28 14836 Yuba Sierra Nevada Mountains Foothills, along CA-49, 2.2 miles north of the Camptonville exit 811 Comment
  UCR206969  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2009-5-28 14819 B Nevada Sierra Nevada Mountains Foothills, along CA-49, 2.0 miles north of its junction with CA-20, north of Nevada City 780 Comment
  UCR207821  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2009-5-14 14706 El Dorado Sierra Nevada Mountains Foothills, hiking trail starting north of CA-49, 3.5 miles north of CA-50 in Placerville 511 Comment
  UCR207872  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2009-4-22 14570 Placer Sierra Nevada Mountains Foothills, Rucky Chuck Rd. (dirt) 1.2 miles southeast of Forest Hill Road 448 Comment
  UCR208333  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2009-4-21 14546 El Dorado Sierra Nevada Mountains Foothills, along CA-193, 1.1 miles south of the South Fork American River at Chili Bar 381 Comment
  UCR217830  Trifolium dubium George K. Helmkamp, Amy Barnes 2010-5-7 15970 Calaveras Sierra Nevada Mountains Foothills, along CA-49, 0.4 mile north of its junction with CA-12, vicinity of San Andreas 233 Comment
  UCR217873  Trifolium dubium George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16125 El Dorado Sierra Nevada Mountains Foothills, Slug Gulch Road, 2.9 miles east of its junction with Perry Creek road 1012 Comment
  UCR217874  Trifolium dubium George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16131 El Dorado Sierra Nevada Mountains Foothills, along Perry Creek, about 0.2 mile south of Slug Gulch Road, at a point 4.7 miles east of junction with Perry Creek Road 1027 Comment
  UCR218468  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2010-6-26 16389 Placer Sierra Nevada Mountains Foothills, junction of Canyon Way and Yankee Jim's Road, east of I-80 between Weimar and Colfax 616 Comment
  UCR222544  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2010-4-17 15884 El Dorado Sierra Nevada Mountains Foothills, Rattlesnake Bar Road, 1.9 miles southwest of its junction with CA-49 near Pilot Hill 314 Comment
  UCR224234  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2010-4-23 15928 El Dorado Sierra Nevada Mountains Foothills, Salmon Falls Road at the Salmon Falls crossing of the American River 157 Comment
  UCR230610  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2011-5-26 17385 Nevada Northern Sierra Nevada Mountains Foothills, SE of Grass Valley near Rollins Reservoir dam, along CA-174 NNW of Colfax, just west of the bridge over Bear River 613 Comment
  UCR230656  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2011-5-10 17233 Amador Northern Sierra Nevada Mountains Foothills, Turner Road, 0.8 miles south of its junction with Amador Creek Road, 0.95 mi. SE (119 deg. ) of Amador City 311 Comment
  UCR231899  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2011-4-10 17152 Placer Sacramento Valley, along Riosa Road at the east edge of the village of Sheridan 41 Comment
  UCR232223  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2011-5-6 17209 Yuba East edge of Sacramento Valley, junction of Camp Far West Road and Spenceville Road, 5.4 mi. NE (47 deg. ) of Wheatland 56 Comment
  UCR233135B  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2010-3-26 15776 Sacramento Sacramento Valley/lower Sierra Nevada Foothills, along CA-16 (Jackson Rd.), 0.2 mile west of the Amador County line 82 Comment
  UCR233138A  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2011-5-21 17332 Calaveras Northern Sierra Nevada Mountains Foothills, Rail Road Flat Road, 1.2 miles south of its junction with Ridge Road, 10.1 mi. ENE (83 deg. ) of Mokelumne Hill 854 Comment
  UCR235444  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2012-5-15 18973 Calaveras Northern Sierra Nevada Mountains Foothills, along Murray Creek Road (Murraydale Ln.), 1.4 miles east of Pope Road in San Andreas 387 Comment
  UCR237309  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2012-4-14 18760 Butte Northwestern Sacramento Valley, Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi. ENE (82 deg. ) of Gridley 91 Comment
  UCR23847  Trifolium dubium Alfred R. Roos 1954-5-29 s.n. Los Angeles Hollywood Comment
  UCR242640  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2011-6-17 17560 Calaveras Northern Sierra Nevada Mountains Foothills, Winton Road, 3.7 miles northeast of CA-26 at West Point 1012 Comment
  UCR248491  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2012-5-31 19086 Calaveras Northern Sierra Nevada Mountains Foothills, Along CA-26, 2.2 km NE (63 deg. ) of Glencoe, 0.8 mile west of the crossing over the South Fork Mokelumne River 741 Comment
  UCR249539  Trifolium dubium George K. Helmkamp, Amy Barnes 2013-3-28 20291 Placer Eastern Sacramento Valley, northwest side of junction of Riosa Road and Andressen Road, northeast of Sheridan 36 Comment
  UCR249883  Trifolium dubium George K. Helmkamp, Mary Alice Barnes 2013-5-17 20641 Calaveras Northern Sierra Nevada Mountains Foothills, along CA-26, 0.3 mile northeast of Paloma Road, SW of Mokelumne Hill 505 Comment
  UCR250069  Trifolium dubium George K. Helmkamp, Mary Alice Barnes 2013-5-3 20488 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 4.7 miles south of Forest Hill Road, 1.8 mi. east (92 deg. ) of Foresthill 829 Comment
  UCR250145  Trifolium dubium George K. Helmkamp, Elizabeth Helmkamp 2013-6-11 20822 Placer Northern Sierra Nevada Mountains Foothills, Yankee Jim's Road, 3.6 miles northwest of its junction with Forest Hill Road 768 Comment
  UCR250348  Trifolium dubium George K. Helmkamp, Elizabeth Helmkamp 2013-5-24 20708 Calaveras Northern Sierra Nevada Mountains Foothills, North side of Mokelumne River, west of Big Bar Road and the CA-49 bridge 198 Comment
  UCR250603  Trifolium dubium George K. Helmkamp, Mary Alice Barnes 2013-5-3 20496 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road at the north side of the bridge over West Fork of North Fork American River, 5.2 mi. east (87 deg. ) of Forest Hill 422 Comment
  UCR250636  Trifolium dubium George K. Helmkamp, Mary Alice Barnes 2013-5-3 20475 Placer Foothills, northern Sierra Nevada Mountains, Mosquito Ridge Road, 1.1 miles south of Forest Hill Road 962 Comment
  UCR253553  Trifolium dubium George K. Helmkamp, Amy Barnes 2014-4-23 22805 Placer Sierra Nevada Mountains Foothills, Spring Garden Road, at the north side of its junction with Foresthill Road, 8.4 km west of Foresthill 720 Comment
  UCR253571  Trifolium dubium George K. Helmkamp, Amy Barnes 2014-4-7 22704 Sacramento Sacramento Valley, along CA-104/Twin Cities Rd., 0.7 mile west of the Amador County line 63 Comment
  UCR257145  Trifolium dubium George K. Helmkamp 2014-4-17 22755 Nevada Sierra Nevada Mountains Foothills, 8 miles west of Grass Valley, Penn Valley Drive, 0.2 mile southeast of its junction with CA-120 438 Comment
  UCR257558  Trifolium dubium George K. Helmkamp, Amy Barnes 2014-4-23 22781 Placer Sierra Nevada Mountains Foothills, Old Forest Hill Road, 0.4 mile northeast of its junction with CA-49 at North Fork American River 290 Comment
  UCR257603  Trifolium dubium George K. Helmkamp, Amy Barnes 2014-3-21 22636 Placer Sacramento Valley, Riosa Road at the east side of its junction with CA-65, just west of Sheridan 33 Comment
  UCR258213  Trifolium dubium George K. Helmkamp, Amy Barnes 2013-3-28 20263 Yuba Eastern Sacramento Valley, northbound exit road from CA-65, connecting with Forty Mile Road 30 Comment
  UCR59546  Trifolium dubium B. G. Pitzer, Steve Morgan, H. M. Soldan 1988-5-31 1010 Calaveras Stanislaus National Forest, on Calif. Hwy 4, 11 mi south of Arnold & 8.5 mi north of Angel's Camp Comment
  UCR97827  Trifolium dubium Scott D. White, Brian Leatherman 1997-4-4 4903 Fresno Eastern Central Valley, Kings River Area, east of Centerville, just south of State Hwy 180 (Kings Canyon Road), just north of existing gravel quarry, near Collins Creek 122 Comment
  UCSB53357  Trifolium dubium Roberts, Dar 1983-7-23 Inyo Fish Slough; desert wetland system 4.5 mi. north of Bishop at the northern end of Owens Valley; study site, 14 sq. mi. along a 7 mi. drainage axis; 1 mi N of jct of Fish Slough Rd and Jean Blanc Rd at barrier separating slough from Owens River canal 1341 Comment
  UCSC008144  Trifolium dubium Megan Bontrager 2011-5-12 s.n. Santa Cruz Santa Cruz, Great Meadow, University of California, Santa Cruz 140 Comment
  YM-YOSE109318  Trifolium dubium D. Graham Roy 1998-6-7 4061 Mariposa EL PORTAL, CALIFORNIA. RANCHERIA FLAT ROAD, 25M ABOVE PARKING LOT AT END OF BARIUM MINE ROAD. OPEN SW FACING SLOPE ALONG ROADSIDE. Comment
  YM-YOSE231896  Trifolium dubium Dean Taylor 2009-6-15 20660 Mariposa Yosemite National Park: Yosemite Valley, area between front entrance of Post Office and Degnan's Deli Comment
  YM-YOSE231897  Trifolium dubium Dean Taylor 2009-6-15 20660 Mariposa Yosemite National Park: Yosemite Valley, area between front entrance of Post Office and Degnan's Deli Comment
  BLMAR741  Trifolium dubium Jennifer Wheeler 2015-5-18 741 Humboldt King range, at corrals or strawberry rock grazing allotment 121 Comment
  CAS-BOT-BC173210  Trifolium dubium Beecher Crampton 1998-4-20 10341 Solano Along Midway Road, near its undercrossing of Hwy. 505 and just east of Hartley Comment
  CDA29925  Trifolium dubium G. D. Barbe 1991-5-17 4416 -A Tuolumne Kelley Ranch, 18177 Kelley Ranch Road, southeast of Sonora. Comment
  CDA4289  Trifolium dubium T. C. Fuller 1967-6-13 15945 San Mateo South side of road to Half Moon Bay, 0.7 mile west of Skyline Boulevard, Crystal Springs. 0 Comment
  CDA4291  Trifolium dubium E. L. Paddock 1977-6-1 Sacramento 9372 Castlemont Circle, Orangevale. 0 Comment
  CDA4294  Trifolium dubium G. D. Barbe, T. C. Fuller 1974-6-17 1837 Humboldt Sail Court, Shelter Cove. 0 Comment
  CDA4295  Trifolium dubium L. P. Janeway 1996-5-2 4973 Plumas Northern High Sierra Nevada.; Soda Creek, along Road 25N22 200 feet northwest of Highway 70 and East Branch North Fork Feather River. Comment
  CDA4296  Trifolium dubium L. Ahart 2000-5-13 8342 Butte On the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. Comment
  CLARK-A1528-2878  Trifolium dubium Alfred R. Roos 1954-5-29 Los Angeles Los Angeles Comment
  HSC14986  Trifolium dubium J. L. Baker 1965-4-2 56 Humboldt Humboldt Meridain, 4 mi. N of Arcata on North Bank Rd. Comment
  HSC14995  Trifolium dubium J. W. Johnson 1962-4-18 1246 Humboldt Arcata, Mad River County Park Comment
  HSC15117  Trifolium dubium A. E. Inman 1982-5-25 Humboldt N bank of Mad River, 200 yrds. W of Lindsey Creek Comment
  HSC1865  Trifolium dubium H. E. Parks, S. T. Parks Jun 1943 24259 Del Norte Darlingtonia, Smith River. 122 Comment
  HSC45105  Trifolium dubium R. Sutherland 1978-5-17 2 .17578 Humboldt 305 Comment
  HSC45106  Trifolium dubium R. Sutherland 1978-5-16 6 .16578 Humboldt 157 Comment
  HSC45122  Trifolium dubium R. Sutherland 1978-5-12 1 .12578 Humboldt Mckee Flat 288 Comment
  HSC49602  Trifolium dubium Linda M. Barker 1975-5-31 653 Del Norte Old Gasquet Toll Rd., 1.4 mi. N of southern entrance 216 Comment
  HSC66917  Trifolium dubium Ruby Van Deventer 1962-5-4 Del Norte Van Deventer Ranch along North Bank Rd. Comment
  HSC71438  Trifolium dubium J. P. Smith 1973-5-26 6836 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC71477  Trifolium dubium J. P. Smith 1973-5-5 6544 Siskiyou Scott Bar along the Scott River Comment
  HSC77333  Trifolium dubium L. P. Janeway 1983-4-30 239 Humboldt 21 Comment
  HSC77921  Trifolium dubium L. P. Janeway, Paul Wilson 1984-5-7 769 Humboldt On the N Spit of Humboldt Bay, on BLM lands near the Coast Guard Station 3 Comment
  HSC89573  Trifolium dubium M. Roantree 1985-5-15 46 Humboldt E side of Trinidad Head. Comment
  HSC90242  Trifolium dubium Jean Hanson 1980-5-24 62 Humboldt Indian (Gunther) Island, in Humboldt Bay, city of Eureka. W end of island Comment
  HSC93807  Trifolium dubium F. Bowcutt 1989-5-18 1173 Mendocino At trailhead to Jones Beach/Whale Gulch along road from Four Corners to Needle Rock Ranch House, 15 air mi. SWxW of Garberville. 67 Comment
  HSC93872  Trifolium dubium F. Bowcutt 1988-7-19 1147 Mendocino About 10 mi. due W of Leggett and 60 mi. N of Fort Bragg 0 Comment
  JEPS84756  Trifolium dubium J. Stratford 1982-5-2 Alameda Big Trees parking lot Anthony Chabot Regional Park Comment
  OBI30119  Trifolium dubium Melissa Luckow 1982-6-24 895 San Luis Obispo Cambria, jctn of hwy 1 and rd to Black Mt SE corner of rd. EIR vouchers Comment
  OBI45697  Trifolium dubium David J. Keil, Larry Kelly 1988-5-20 20670 Madera Bass Lake. Crane Valley camground Comment
  OBI64342  Trifolium dubium Margaret Przybylski, Margaret Thompson 2004-4-9 134 Alameda The Oakland Zoo, E of main parking lot in rolling hills. Near #1 of a frisbee golf hole (disturbed soil) 160 Comment
  OBI65811  Trifolium dubium D. R. Miller 1989-6-7 689 -12 San Luis Obispo Coles' in front of main house. T26S, R8E, sec 4. Pine Mtn area 732 Comment
  OBI65917  Trifolium dubium D. R. Miller 1994-5-27 594 -384 San Luis Obispo Pine Mt region. Near pond area, Will Hearst property (Cole's): Marmolejo Crk drainage 700 Comment
  OBI69755  Trifolium dubium D. R. Miller 1993-6-11 693 -27 San Luis Obispo Pine Mt region; at Cole Ranch main house, in front near pond area 732 Comment
  OBI69776  Trifolium dubium D. R. Miller 1993-5-19 593 -19 San Luis Obispo Pine Mt Region; in front of main house, at Cole Ranch 732 Comment
  OBI70825  Trifolium dubium David J. Keil 2009-5-5 30602 San Luis Obispo Upper See Canyon Road Comment
  OBI72778  Trifolium dubium D. R. Miller 2009-6-5 609 .889 San Luis Obispo Rocky Butte/Pine Mt region; along main trl mid-way down Almaden Flats area 853 Comment
  PGM6168  Trifolium dubium Beatrice F Howitt 1973-4-30 0050 Monterey Santa Lucia Mountains, Molera State Park, In park Comment
  PGM922  Trifolium dubium Helen Lind 1971-4-27 Monterey Monterey Peninsula, Pacific Grove PGM, (PGM) lawn Comment
  POM229944  Trifolium dubium Louis C. Wheeler 1935-6-27 3617 Siskiyou Greenview, Scott Valley. 884 Comment
  POM278005  Trifolium dubium Lyman D. Benson 6575 Marin U. S. 101, N. of San Rafael. 30 Comment
  RSA0038250  Trifolium dubium A. R. Roos 1954-5-29 s.n. Los Angeles Hollywood parking lot. Comment
  RSA120978  Trifolium dubium W. R. Dudley 1903-5-15 s.n. Santa Clara Santa Cruz Mtn Peninsula, Stanford University. Comment
  RSA128939  Trifolium dubium J. T. Howell 1946-6-16 s.n. Marin Inverness Park Comment
  RSA131342  Trifolium dubium John H. Thomas 1957-6-23 6814 Santa Clara 2130 Bowdoin Street, Palo Alto. Comment
  RSA166991  Trifolium dubium C. F. Smith 1951-5-29 3169 Santa Barbara At Santa Barbara Free Public Library. Comment
  RSA195478  Trifolium dubium C. R. Gunn 1963-6-2 2694 Humboldt Two miles SE of Arcata Comment
  RSA20980  Trifolium dubium Carl B. Wolf 8836 Del Norte Redwood Highway, 1/4 mi. So. of Mouth of Wilson Creek. 8 Comment
  RSA293201  Trifolium dubium J. P. Smith 1973-5-5 6544 Siskiyou Scott Bar along the Scott River. Comment
  RSA43868  Trifolium dubium H. M. Pollard 1948-7-18 s.n. Humboldt Banks of Klamath River, Orleans. Comment
  RSA510999  Trifolium dubium Robert F. Thorne, Percy C. Everett, K. Thorne 35246 Humboldt N edge of Eureka, E of Hwy. 101. 5 Comment
  RSA517737  Trifolium dubium Donald G. Nelson 1937-5-23 523 a Alameda Univ. of Calif. Campus, Berkeley, along path through Monterey pines to footbridge, north of Edwards Athletic Field. Comment
  RSA639652  Trifolium dubium Robert F. Thorne, Percy C. Everett, K. Thorne 1963-4-20 31556 Monterey 0.5 miles N of Jolon. 335 Comment
  RSA656758  Trifolium dubium Beecher Crampton 3353 Sacramento 5 miles north of Galt. Junction Arno Road and US Hwy. 99. Comment
  RSA662068  Trifolium dubium A. R. Roos 1954-5-29 s.n. Los Angeles Hollywood parking lot. Comment
  RSA721747  Trifolium dubium Barbara Ertter, Mary Bowerman 1995-5-7 14023 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, along road through annual grassland with scattered blue oak south of Marsh Creek. Road. summit. 305 Comment
  RSA78733  Trifolium dubium Philip A. Munz 1952-6-23 17686 Del Norte Hurdy Gurdy Creek, Siskiyou Mts. 671 Comment
  RSA91498  Trifolium dubium F. W. Peirson 1923-7-11 3622 Humboldt 20 miles north of Eureka Comment
  RSA94341  Trifolium dubium Peter Rubtzoff 1951-7-14 461 Sonoma Pitkin Marsh near Forestville, between the Upper and the Lower marshes Comment
  SBBG121202  Trifolium dubium L. Ahart 2007-5-12 13791 Yuba ca. 20 yards NE of the second power tower, ca. 400 yards N of Fruitland Rd, ca. 13 mi (air) NE of Marysville 28 Comment
  SD129679  Trifolium dubium Donald G. Nelson 1937-5-23 523 a Alameda University of California Berkeley campus, on path through Monterey pines to footbridge, north of Edwards Athletic Field Comment
  SD225770  Trifolium dubium Carol Witham, Jennifer Buck 2001-4-24 123 Sacramento 2 mi. east of Sacramento-Amadow county line along Hwy 104, follow dirt road for 2 mi south, east of dirt road, Howard Ranch site. Comment
  SD62072  Trifolium dubium D. F. Howe 1965-5-21 4066 Placer Canyon on south side of north fork of American River between Forest Hill and Yankee Jims 914 Comment
  SDSU5276  Trifolium dubium D. F. Howe 1965-5-21 4066 Placer Canyon on south side of north fork of American River between Forest Hill and Yankee Jims. 914 Comment
  SEINET10452502  Trifolium dubium Mary Susan Taylor 1981-5-6 Taylor 3621 Butte T21N R7E sw sec 30, Forbestown quad. W side of rd leading to Jackson Ranch, ca. 5 air mi N of Feather Falls. Yellow Pine Forest; 3700 ft. 1128 Comment
  SEINET10452503  Trifolium dubium Mary Susan Taylor 1978-7-19 Taylor 1730 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  SEINET10452505  Trifolium dubium Mary Susan Taylor 1978-7-21 Taylor 1808 Butte On N and S side of Oroville-Quincy Hwy, ca. 9 mi N of Lake Madrone, ca. 19 mi NE of Oroville; Yellow Pine Forest. 914 Comment
  SEINET10487832  Trifolium dubium Botany 1985-4-20 BOTANY s.n. Trinity T33n,r9w,sec.24. H.m. Road bank 0.5 mile n of hwy 299 along road to steelbridge Campground. Open, somewhat shaded, grassy site in oak-madrone woodland 536 Comment
  SEINET10487838  Trifolium dubium Patricia L. Kenney 1973-6-4 Kenney 409 Shasta Pollard flat campground in klamath ntl forest off i5, 21.6 mi s of dunsmuir. 457 Comment
  SEINET10874074  Trifolium dubium Heidi H. Schmidt 1993-6-15 Schmidt 858 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  SEINET10906944  Trifolium dubium Mary Susan Taylor 1980-5-31 Taylor 2748 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  SEINET10973172  Trifolium dubium Mary Susan Taylor 1978-7-19 Taylor 1778 Butte On E side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 6 mi NE of Jonesville. 1890 Comment
  SEINET7413754  Trifolium dubium F. Martin 1962-4-21 48 Marin 7 miles east of San Rafael, along the San Pedro Road 3 Comment
  SFV1920  Trifolium dubium M. L. Vincent 1960-5-1 64 Los Angeles Santa Monica. In lawn at 500 25th Street. Comment
  SFV1958  Trifolium dubium C. F. Smith 1951-5-29 3169 Santa Barbara Santa Barbara. In lawn at Santa Barbara Free Public Library. Comment
  SJSU7635  Trifolium dubium D. D. Kohler 1963-4-11 San Mateo by Skyline Blvd, 3 mi N of San Bruno Comment
  UCD108813  Trifolium dubium Clinton C. Shock 1980-5-25 108 Mendocino State Highway 1, 0.9 mile S of Hales Grove, 60 meters E of road, property of Otto Smith. Comment
  UCD108815  Trifolium dubium Collect Unknown Date Unknown s.n. Unknown County and location unknown. Comment
  UCD108816  Trifolium dubium Rimo Bacigalupi; L. R. Heckard 1962-5-29 8536 El Dorado Head of Spanish Ravine, southern outskirts of Placerville. 640 Comment
  UCD108819  Trifolium dubium J. C. Borden 1968-5-16 s.n. Trinity Douglas City. Comment
  UCD108857  Trifolium dubium P. B. Kennedy 1928-5-4 10154 Alameda UC Berkeley Campus. Near Oxford Street in front of Hilgard Hall. Comment
  UCD108860  Trifolium dubium P. B. Kennedy 1929-6-14 10323 Humboldt Eureka. Comment
  UCD108861  Trifolium dubium Caitlin Lewis; William Mutch 1993-4-17 8 Sonoma Sugarloaf Ridge State Park. About 40 air miles N of San Francisco, 11 air miles E of Santa Rosa, and 2.5 air miles NE of Kenwood. In Adobe Canyon N of Sugarloaf Ridge and S of Red Mountain 1 mile. Near visitor center. 365 Comment
  UCD108864  Trifolium dubium A. H. Murphy 1947-4-25 s.n. Humboldt 2 miles N of Blocksburg, W. Smith Ranch. Comment
  UCD108865  Trifolium dubium Robert E. Preston 1995-4-1 735 Sacramento Sloughhouse Road Vernal Pool Preserve. Ca. 0.8 miles SW of int. Hwy 16 and Sloughhouse Road. 54 Comment
  UCD108867  Trifolium dubium Robert E. Preston 1995-4-24 815 Sacramento Sheldon North Vernal Pool Preserve. Sheldon North development, ca. 1.5 miles E of Highway 99, S of Calvine Road. 10 Comment
  UCD108874  Trifolium dubium Smyth 1951-8-1 s.n. Trinity Trinity County. Comment
  UCD108876  Trifolium dubium R. Tofsrud 1951-5-9 s.n. Placer Highway 40, ca. 4 miles E of Colfax. Comment
  UCD108878  Trifolium dubium R. Tofsrud 1951-6-1 s.n. Mendocino South of Elk. Comment
  UCD108879  Trifolium dubium R. Tofsrud 1951-6-1 s.n. Mendocino South of Elk. Comment
  UCD108880  Trifolium dubium W. A. Williams 1951-6-1 s.n. Humboldt Humboldt County. Comment
  UCD108882  Trifolium dubium W. A. Williams 1951-6-14 s.n. Humboldt 3 miles E of Hydesville, Bech Ranch swale. Comment
  UCD108883  Trifolium dubium Barbara Yungert 1974-4-10 12 Yuba Sieera Foothill Field Station. Along Porter Creek, SC-5 project area. Comment
  UCD33577  Trifolium dubium Beecher Crampton 1970-5-6 8590 Mendocino 3 miles NE of Albion. Comment
  UCD34224  Trifolium dubium Beecher Crampton 1978-5-8 9577 Yolo 1/4 mile south of Saxon Station. NE quarter. Comment
  UCD34242  Trifolium dubium Beecher Crampton 1978-5-21 9598 Mendocino 3/4 mile NW of Cleome, about 3.5 miles N of Fort Bragg. Comment
  UCD35005  Trifolium dubium Beecher Crampton 1998-4-20 10341 Solano Along Midway road, near its undercrossing of Hwy. 505 and just east of Hartley. Comment
  UCD38224  Trifolium dubium Beecher Crampton 1953-5-28 1354 Sacramento 2 miles E of North Sacramento along US Highway 40. Comment
  UCD38290  Trifolium dubium Beecher Crampton 1954-4-26 1791 Sonoma 9 miles SE of Geyserville, Highway 128, Alexander Valley. Comment
  UCD41034  Trifolium dubium Carol W. Witham 2003-4-26 966 Yolo DFG Tule Ranch vernal pools. Approximately 8 miles southeast of Davis. Southeast of the junctions of County Roads 38 and 105. 4 Comment
  UCD83444  Trifolium dubium Jake Ruygt 1991-6-10 2714 Napa Lake Henne, Friesen's Lakes. 553 Comment
  UCSB15847  Trifolium dubium Breedlove, Dennis 1962-6-7 Mendocino Along State Highway 1, 14.0 miles north of Fort Bragg 45 Comment
  UCSB40189  Trifolium dubium Steele, Kelly 1982-5-13 Santa Barbara More Mesa; along the Pacific Ocean, south of Atascadero Creek, adjacent to and west of Hope Ranch Park, ca. 3 km southeast of Goleta; (western section, area 2b). 40 Comment
  UCSB42195  Trifolium dubium Roos, Alfred 1954-5-29 Los Angeles Hollywood parking lot Comment
  UCSB45510  Trifolium dubium Smith, Clifton 1951-5-29 Santa Barbara In lawn at S.B. Free Public Library, Santa Barbara Comment
  UCSC000426  Trifolium dubium Agnes Erickson 1931-4-19 s.n. San Francisco Fort Funston Golden Gate Park - San Francisco Comment
  UCSC003382  Trifolium dubium Randall Morgan 2001-4-3 3700 Santa Cruz Watsonville, Watsonville Airport Comment
  UCSC007888  Trifolium dubium Neal Kramer 1997-3-30 522 Santa Cruz Bonny Doon Ecological Reserve, below bus stop gate 465 Comment
  UCSC009571  Trifolium dubium D. Styer, J. Styer 2012-3-29 116 Monterey Foul Bore Road; Fort Ord Region E12 Comment



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