Search Results — 38 specimen records retrieved (38 records with coordinates)
Results for search: Scientific name=Petrorhagia dubia (including nomenclatural synonyms); Source=All; Collector=Helmkamp;   More information: Jepson Online Interchange
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
 Records are made available under the CCH Data Use Terms.

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A yellow cell in the column headed "?", for records with coordinates, indicates a discrepancy with respect to range as specified in the eFlora. Read more ...
? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC438816  Petrorhagia dubia George K. Helmkamp; Mary Alice Barnes 2013-4-18 20357 Placer Northern Sierra Nevada Mtns Foothills: Yankee Jim Road, 2.4 miles east of its junction with Canyon Way, 2.5 mi. ENE (78 deg. ) of Weimar. 512 Comment
  CDA36375  Petrorhagia dubia G. K. Helmkamp, E. A. Helmkamp 2009-5-7 14621 Placer Sierra Nevada Mountains Foothills; Oxbow Road, 2.0 miles south of its junction with Mosquito Ridge Road; north edge of Oxbow Reservoir. Comment
  RSA0012079  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2011-5-6 17207 Yuba junction of Camp Far West Road and Spenceville Road, 5.4 mi. NE (47 deg ) of Wheatland. 56 Comment
  RSA781448  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2010-4-23 15934 El Dorado Salmon Falls Road at the Salmon Falls crossing of the American River 157 Comment
  SD237399  Petrorhagia dubia G. K. Helmkamp, E. A. Helmkamp 2010-4-23 15934 Placer Sierra Nevada Mountains Foothills: Salmon Falls Road at the Salmon Falls crossing of the American River (Pilot Hill 7.5'Q) 156 Comment
  SD239679  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2011-7-17 17774 Nevada Northern Sierra Nevada Mountains Foothills: You Bet Road, 2.6 miles east of its junction with CA-174 and at the crossing over Greenhorn Creek, 3.18 miles ESE (95a^z) of Peardale (Chicago Park 7.5'Q) 686 Comment
  SEINET11261936  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2012-4-30 18879 El Dorado Northern Sierra Nevada Mountains Footlhills: Mosquito Road, 0.3 miles N of the bridge over the South Fork American River.; 0 427 Comment
  SEINET13203122 Image available Petrorhagia dubia George K. Helmkamp 2014-1 22749 Nevada Sierra Nevada Mountains Foothills: 8 miles west of Grass Valley, Penn Valley Drive, 0.2 mile southeast of its junction with CA-120 (Rough & Ready 7.5' Q.) 133 Comment
  SEINET3245950  Petrorhagia dubia G. K. Helmkamp, E. A. Helmkamp 2010-1 15934 Placer Sierra Nevada Mountains Foothills: Salmon Falls Road at the Salmon Falls crossing of the American River (Pilot Hill 7.5') 157 Comment
  SEINET4560803  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2011-1 17774 Nevada Northern Sierra Nevada Mountains Foothills: You Bet Road, 2.6 miles east of its junction with CA-174 and at the crossing over Greenhorn Creek, 3.18 miles ESE (95 degrees) of Peardale 686 Comment
  UCD98377  Petrorhagia dubia G. K. Helmkamp; E. A. Helmkamp 2007-4-26 11820 Amador Northern Sierra Nevada Mountains; along CA E-16, 0.7 mile south of River Pines. 610 Comment
  UCD98378  Petrorhagia dubia G. K. Helmkamp; E. A. Helmkamp 2007-5-1 11907 El Dorado Northern Sierra Nevada Mountains; access to road to South Fork American River along CA-49, 4.4 miles northwest of Coloma. 207 Comment
  UCR173296  Petrorhagia dubia George K. Helmkamp, Elizabeth Helmkamp 2006-4-29 10253 El Dorado Northern Sierra Nevada Foothills, Rock Creek Road, 0.9 mi. east of Calif. Hwy 193 along the S Fork of the American River 415 Comment
  UCR173299  Petrorhagia dubia George K. Helmkamp, Elizabeth Helmkamp 2006-4-27 10246 El Dorado Northern Sierra Nevada Foothills, c. 20 mi. by air east of Sacramento; 0.9 mi. N of Brandon Corner along French Creek Road 256 Comment
  UCR173346  Petrorhagia dubia George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10380 Nevada Northern Sierra Nevada Mtns., Cedarsong Road, 0.1 mi. NE of Calif. Hwy 49 (NW of Nevada City) 637 Comment
  UCR173362  Petrorhagia dubia George K. Helmkamp, Elizabeth Helmkamp 2006-5-9 10363 Amador Northern Sierra Nevada Foothills, Near Enterprise, c. 0.4 mi. east of Calif. Hwy 88 on an unnamed dirt road (probably Bell Road) 305 Comment
  UCR184805  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2007-5-7 11968 El Dorado Foothills, Northern Sierra Nevada Mountains, Pedro Hills Road, 0.5 mile west of its junction with Calif. Hwy 49, junction of roads 5.3 miles south of Cool 311 Comment
  UCR184850  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2007-4-26 11820 Amador Foothills, northern Sierra Nevada Mountains, along Calif. E-16, 0.7 mile south of River Pines 610 Comment
  UCR187512  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2007-4-20 11752 El Dorado Foothills, Northern Sierra Nevada Mountains, junction of French Creek Road and Lost Creek road just north of Frenchtown 366 Comment
  UCR188157  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2007-5-1 11907 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
  UCR196993  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2008-5-20 13462 Yuba Sierra Nevada Mountains Foothills, along CA-49, 0.1 mile north of the Nevada Co. line at Oregon Creek 466 Comment
  UCR207672  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2009-4-21 14529 El Dorado Sierra Nevada Mountains Foothills, junction of Rock Creek Road and CA-193, north of Chili Bar and the South Fork of the American River 390 Comment
  UCR207870  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2009-4-22 14576 Placer Sierra Nevada Mountains Foothills, Rucky Chuck Rd. (dirt) 1.2 miles southeast of Forest Hill Road 448 Comment
  UCR208579  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2009-5-7 14621 Placer Sierra Nevada Mountains Foothills, Oxbow Road, 2.0 miles south of its junction with Mosquito Ridge Road; north edge of Oxbow Reservoir 402 Comment
  UCR217875  Petrorhagia dubia George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16130 El Dorado Sierra Nevada Mountains Foothills, Slug Gulch Road, 2.9 miles east of its junction with Perry Creek road 1012 Comment
  UCR218141  Petrorhagia dubia George K. Helmkamp, Amy Barnes 2010-5-7 16001 Calaveras Sierra Nevada Mountains Foothills, Mountain Ranch Road, 3.2 miles east of San Andreas 436 Comment
  UCR223953  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2010-4-23 15934 El Dorado Sierra Nevada Mountains Foothills, Salmon Falls Road at the Salmon Falls crossing of the American River 157 Comment
  UCR231321  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2011-5-6 17207 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
  UCR232251  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2011-6-7 17491 Amador Northern Sierra Nevada Mountains Foothills, Shake Ridge Road, 7.6 rd. miles northeast (via Pine Gulch & Gopher Flat rds) of junction of Sutter Creek Rd. and Pine Gulch Rd. 712 Comment
  UCR233661  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2011-7-17 17774 Nevada Northern Sierra Nevada Mountains Foothills, You Bet Road, 2.6 miles east of its junction with CA-174 and at the crossing over Greenhorn Creek, 3.18 miles ESE (95 deg. ) of Peardale 686 Comment
  UCR235633  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2012-4-30 18879 El Dorado Northern Sierra Nevada Mountains Foothills, Mosquito Road, 0.3 mile north of the bridge over the South Fork American River 427 Comment
  UCR237048  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2012-4-21 18810 Nevada Northern Sierra Nevada Mountains Foothills, junction of Lime Kiln Road and Amberley Lane, 14.5 mi. NNW (345 deg. ) of Auburn 414 Comment
  UCR237312  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2012-4-14 18763 Butte Northwestern Sacramento Valley, entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  UCR250351  Petrorhagia dubia George K. Helmkamp, Mary Alice Barnes 2013-4-18 20357 Placer Northern Sierra Nevada Mtns Foothills, Yankee Jim Road, 2.4 miles east of its junction with Canyon Way, 2.5 mi. ENE (78 deg. ) of Weimar 512 Comment
  UCR250606  Petrorhagia dubia George K. Helmkamp, Mary Alice Barnes 2013-4-24 20381 Amador Northern Sierra Nevada Mountains Foothills, Along CA-26 (Red Corral/West Point-Pioneer Rd.), 2.8 miles southeast of its junction with CA-88 905 Comment
  UCR257150  Petrorhagia dubia George K. Helmkamp 2014-4-17 22749 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
  UCR257559  Petrorhagia dubia George K. Helmkamp, Elizabeth Helmkamp 2013-5-2 20453 El Dorado Sierra Nevada Mountains Foothills, Happy Valley Road, 0.6 mile east of its junction with Mt. Aukum Road, 1.65 air miles NE (72 deg. ) of Somerset 665 Comment
  UCR258401  Petrorhagia dubia George K. Helmkamp 2014-5-21 22913 El Dorado Sierra Nevada Mountain Foothills, Bucks Bar Road, 0.8 mile northwest of the bridge over North Fork Cosumnes River 605 Comment



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