Search Results — 405 specimen records retrieved (404 records with coordinates)
Results for search: County=IMPERIAL; Source=All; Collector=Helmkamp;   

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC167344  Fagonia laevis G. K. Helmkamp; E. Helmkamp 1998-1-24 2597 Imperial 4.2 mi. N of Winterhaven on Picacho Rd, where the road crosses the canal 91 Comment
  CAS-BOT-BC83137  Eschscholzia minutiflora G. K. Helmkamp; E. A. Helmkamp 2001-3-17 6291 Imperial Colorado Desert. Ogilby Road, 15.4 miles south of CA-78. 168 Comment
  CLARK-A1045-1200  Pluchea purpurascens George K. Helmkamp 1977-11-6 Imperial Salton Sea Imperial Wildlife Management Area, Wister Unit; Salt Creek Campground area; at the edge of catfish ponds; Wister 7.5'Q Comment
  CLARK-A1045-1201  Oligomeris linifolia George K. Helmkamp 1977-1-22 Imperial Yuha Desert Crucifixion Thorn Natural Area [9 miles southeast of Ocotillo]; Coyote Wells 7.5'Q Comment
  CLARK-A1045-1202  Nama hispida var. spathulata George K. Helmkamp 1977-1-22 Imperial Yuha Desert Crucifixion Thorn Natural Area [9 miles southeast of Ocotillo]; Coyote Wells 7.5'Q Comment
  CLARK-A1045-1203  Dalea mollissima George K. Helmkamp 1977-1-22 Imperial Yuha Desert Crucifixion Thorn Natural Area [9 miles southeast of Ocotillo]; Coyote Wells 7.5'Q Comment
  CLARK-A1045-1205  Trichoptilium incisum George K. Helmkamp 1977-1-22 Imperial Yuha Desert Mount Signal [area], 2 miles south of State Highway 98, gravel pit; ; Mount Signal 7.5'Q Comment
  CLARK-A1045-1206  Camissonia cardiophylla George K. Helmkamp 1977-1-22 Imperial Yuha Desert Mount Signal [area], 2 miles south of State Highway 98, gravel pit; ; Mount Signal 7.5'Q Comment
  CLARK-A1045-1207  Baileya pauciradiata George K. Helmkamp 1977-1-22 Imperial Yuha Desert Mount Signal [area], 2 miles south of State Highway 98, gravel pit; Mount Signal 7.5'Q Comment
  CLARK-A1045-1208  Achyronychia cooperi George K. Helmkamp 1977-1-22 Imperial Yuha Desert Mount Signal [area], 2 miles south of State Highway 98, gravel pit; Mount Signal 7.5'Q Comment
  CLARK-A1045-1209  Brassica tournefortii George K. Helmkamp 1977-1-22 Imperial Yuha Desert Mount Signal [area], 2 miles south of State Highway 98, gravel pit; Mount Signal 7.5'Q Comment
  CLARK-A1045-1210  Camissonia brevipes George K. Helmkamp 1977-1-22 Imperial Yuha Desert Mount Signal [area], 2 miles south of State Highway 98, gravel pit; Mount Signal 7.5'Q Comment
  CLARK-A1045-1211  Dicoria canescens subsp. clarkiae George K. Helmkamp 1977-1-22 Imperial Yuha Desert where Pinto Wash crosses State Highway 98; ; Yuha Basin 7.5'Q Comment
  CLARK-A1045-1212  Aristida californica George K. Helmkamp 1977-1-22 Imperial Yuha Desert where Pinto Wash crosses State Highway 98; ; Yuha Basin 7.5'Q Comment
  CLARK-A1045-1213  Ditaxis neomexicana George K. Helmkamp 1977-1-22 Imperial Yuha Desert where Pinto Wash crosses State Highway 98; ; Yuha Basin 7.5'Q Comment
  CLARK-A1045-1214  Astragalus filipes George K. Helmkamp 1977-1-22 Imperial Yuha Desert where Pinto Wash crosses State Highway 98; ; Yuha Basin 7.5'Q Comment
  CLARK-A1045-1215  Cryptantha angustifolia George K. Helmkamp 1977-1-22 Imperial Salton Sea at Desert Shores, along State Highway 86 near Salton Sea; camp area; Oasis 7.5'Q Comment
  CLARK-A1045-1216  Astragalus crotalariae George K. Helmkamp 1977-1-22 Imperial Salton Sea roadside ditch along State Highway 86 at Riverside County line; Oasis 7.5'Q Comment
  CLARK-A1045-911  Cryptantha barbigera George K. Helmkamp 1977-2-17 Imperial Salton Trough State Highway 22 near Salton Sea; roadside; ; Seventeen Palms 7.5'Q 60 Comment
  HSC86970  Camissonia claviformis G. K. Helmkamp 1988-2-28 Imperial N of Signal Mtn. and S of Hwy. 98 31 Comment
  HSC86971  Nicotiana obtusifolia G. K. Helmkamp 1988-2-28 Imperial At the end of a dirt road ca. 2 mi. WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy. 98 153 Comment
  OBI52768  Chylismia claviformis G. Helmkamp 1988-2-28 s.n. Imperial Just N of Signal Mtn, S of hwy 98. Mount Signal 10 km cell; PG-1N, 2E 30 Comment
  OBI52769  Acmispon strigosus G. Helmkamp 1988-2-28 s.n. Imperial At end of a dirt rd ca 2 mi WSW of Crucifxion Thorn Natural Area, SE of Ocotillo and SW of hwy 98. Crucifixion thorn 10km cell; PG-1N, 0E 152 Comment
  RSA0098560  Spergularia marina George K. Helmkamp 1997-2-1 1294 Imperial SW of Niland along Sinclair Rd and just E of Hatfield Rd. -55 Comment
  RSA489117  Oligomeris linifolia George K. Helmkamp 1988-2-28 32 Imperial At end of a dirt road ca. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98., [Crucifixion Thorn 10 km cell; PG - 1N, OE] 152 Comment
  RSA489118  Eriogonum deserticola George K. Helmkamp 1988-2-28 28 Imperial At end of dirt road ca. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98., [10 km cell; PG-1N, 0E] 152 Comment
  RSA489119  Chorizanthe corrugata George K. Helmkamp 1988-2-28 25 Imperial At end of dirt road ca. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98., [10 km cell; PG-1N, 0E] 152 Comment
  RSA489121  Cryptantha maritima George K. Helmkamp 1988-2-28 1 Imperial Sandy flat just N of Signal Mtn., S of Hwy 98. [Mount Signal 10 km cell; PG-1N, 2E] 31 Comment
  RSA489124  Cryptantha costata George K. Helmkamp 1988-2-28 s.n. Imperial Sandy flat just N of Signal Mtn., S of Hwy 98. [Mount Signal 10 km cell; PG-1N, 2E] 31 Comment
  RSA489125  Aristida adscensionis George K. Helmkamp 1988-2-28 s.n. Imperial Sandy flat just N of Signal Mtn., S of Hwy 98. [Mount Signal 10 km cell; PG-1N, 2E 30 Comment
  RSA489126  Lepidium lasiocarpum George K. Helmkamp 1988-2-28 s.n. Imperial Sandy flat just N of Signal Mtn., S of Hwy 98. [Mount Signal 10 km cell; PG-1N, 2E 31 Comment
  RSA489129  Camissonia cardiophylla George K. Helmkamp 1988-2-28 s.n. Imperial At end of dirt road ca. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98. 152 Comment
  RSA489130  Camissonia claviformis subsp. claviformis George K. Helmkamp 1988-2-28 s.n. Imperial At end of dirt road ca. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98. 152 Comment
  RSA489131  Camissonia claviformis subsp. claviformis George K. Helmkamp 1988-2-28 s.n. Imperial Sandy flat just N of Signal Mtn., S of Hwy 98., [Mount Signal 10 km cell; PG-1N, 2E] 30 Comment
  RSA489394  Plantago ovata var. fastigiata George K. Helmkamp 1988-2-28 s.n. Imperial Sandy flat just N of Signal Mtn., S of Hwy 98. [Mount Signal 10 km cell; PG-1N, 2E 30 Comment
  RSA489395  Nicotiana obtusifolia George K. Helmkamp 1988-2-28 s.n. Imperial At end of dirt road ca. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98. [10 km cell; PG-1N, 0E] 152 Comment
  RSA489396  Physalis crassifolia George K. Helmkamp 1988-2-28 s.n. Imperial At end of dirt road ca. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98. [10 km cell; PG-1N, 0E] 152 Comment
  RSA489397  Fagonia laevis George K. Helmkamp 1988-2-28 s.n. Imperial Sandy flat just N of Signal Mtn., S of Hwy 98. [Mount Signal 10 km cell; PG-1N, 2E] 30 Comment
  RSA489398  Baileya pauciradiata George K. Helmkamp 1988-2-28 s.n. Imperial just N of Signal Mts, S of Hwy deserticola. 30 Comment
  RSA489399  Palafoxia arida var. arida George K. Helmkamp 1988-2-28 s.n. Imperial Sandy flat just N of Signal Mtn., S of Hwy 98. [Mount Signal 10 km cell; PG-1N, 2E 31 Comment
  RSA489400  Calycoseris wrightii George K. Helmkamp 1988-2-28 s.n. Imperial At end of dirt road ca. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98. 152 Comment
  RSA489401  Bebbia juncea George K. Helmkamp 1988-2-28 s.n. Imperial Sandy flat just N of Signal Mtn., S of Hwy 98. 31 Comment
  RSA563852  Eleocharis geniculata George K. Helmkamp 1993-11-4 X- 9 Imperial Three-Finger Lake 3 miles south of Palo Verde. 91 Comment
  RSA613717  Chamaesyce pediculifera George K. Helmkamp, E. A. Helmkamp 1998-3-19 2934 Imperial Sonoran (Colorado) Desert Imperial Dam area, just south of the dam on Hwy S-24. 76 Comment
  RSA614711  Cressa truxillensis George K. Helmkamp 1997-2-1 1293 Imperial SW of Niland along Sinclair Rd and just E of Hatfield Rd. -55 Comment
  RSA615346  Eschscholzia minutiflora George K. Helmkamp, E. A. Helmkamp 1998-3-19 2929 Imperial Sonoran (Colorado) Desert Imperial Dam area, just south of the dam on Hwy S-24. 76 Comment
  SBBG92385  Bouteloua barbata G. K. Helmkamp 1989-9-17 Imperial 0.5 mi W of Palo Verde at 4th Street, Mule Mtns 75 Comment
  SBBG92386  Cressa truxillensis G. K. Helmkamp 1989-9-17 Imperial 0.5 mi W of Palo Verde at 4th Street, Mule Mtns 75 Comment
  SD129472  Cressa truxillensis var. vallicola G. Helmkamp 1989-9-17 Imperial Mule Mountains', one-half mile west of Palo Verde at 4th Street, disturbed soil at edge of cotton field. (IPB 10/07) 74 Comment
  SD143710  Mohavea confertiflora G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2887 Imperial 4.7 mi. N of Winterhaven on Picacho Rd & 1 mi. NW of the All-American Canal 75 Comment
  SD143737  Gilia stellata G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2953 Imperial Little Picacho Wash along Picacho Rd., 2.5 miles south of Picacho State Recreation Area. 152 Comment
  SD143740  Aliciella latifolia G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2882 Imperial 4.7 miles north of Winterhaven on Picacho Rd. and 1.0 mile northwest of the All-American Canal. 75 Comment
  SD143741  Aliciella latifolia G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2944 Imperial Colorado Desert: Little Picacho Wash along Picacho Rd. 2.5 miles south of Picacho State Recreation Area. 152 Comment
  SD143745  Plantago ovata G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2869 Imperial Between Highway I-8 and the All-American Canal across from the Brock Research Center; ca. 3.0 miles east of the junction of Highway CA-98 with I-8. 46 Comment
  SD143747  Plantago ovata G. K. Helmkamp, E. Helmkamp 1998-1-24 2572 Imperial Between Highway I-8 and the All American Canal across from the Brock Research Center (ca. 3.0 miles east of the jct of Highway CA-98 with Highway I-8). 46 Comment
  SD143748  Plantago ovata G. K. Helmkamp, E. Helmkamp 1998-1-23 2561 Imperial 18.8 miles northwest of Westmoreland. 29 Comment
  SD143752  Eschscholzia minutiflora G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2878 Imperial 4.7 miles north of Winterhaven on Picacho Road and 1.0 mile northwest of the All-American Canal. 75 Comment
  SD143777  Eriogonum thomasii G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2889 Imperial 4.7 mi. N of Winterhaven on Picacho Rd & 1 mi. NW of the All-American Canal 75 Comment
  SD143779  Eriogonum thomasii G. K. Helmkamp 1998-3-19 2952 Imperial Colorado Desert: Little Picacho Wash along Picacho Rd., 2.5 mi. S of Picacho State Recreation Area 152 Comment
  SD143780  Eriogonum thomasii G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2879 Imperial 4.7 miles north of Winterhaven, on Picacho Road and 1 mile northwest of the All American Canal. (IPB 10/07) 75 Comment
  SD143787  Eriogonum deserticola G. K. Helmkamp, E. Helmkamp 1998-1-24 2582 Imperial Between Hwy I-8 & the All-American Canal across from the Brock Research Center (ca. 3 mi E of the jct of Hwy CA-98 with I-8) 46 Comment
  SD143789  Eriogonum deflexum var. deflexum G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2899 Imperial 7 miles north of Winterhaven, on Picacho Road and 1.7 miles east on powerline road, Desert pavement with small sandy washes. (IPB 10/07) 198 Comment
  SD143794  Oenothera deltoides subsp. deltoides G. K. Helmkamp, E. A. Helmkamp 1998-1-23 2566 Imperial 18.8 miles northwest of Westmoreland. -29 Comment
  SD143796  Oenothera deltoides subsp. deltoides G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2874 Imperial Between Highway I-8 and the All American Canal across from the Brock Research Center. 46 Comment
  SD143799  Eremothera refracta G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2951 Imperial Little Picacho Wash along Picacho Road, 2.5 miles south of Picacho State Recreation Area. 152 Comment
  SD143803  Chylismia claviformis subsp. yumae G. K. Helmkamp, E. Helmkamp 1998-3-18 2868 Imperial Between Highway I-8 and the All American Canal across from the Brock Research Center, ca. 3.0 miles east of the junction of Highway CA-98 with Highway I-8. 46 Comment
  SD143804  Chylismia claviformis subsp. yumae G. K. Helmkamp, E. Helmkamp 1998-1-24 2581 Imperial Between Highway I-8 and the All American Canal across from the Brock Research Center, ca. 3.0 miles east of the junction of Highway CA-98 with Highway I-8. 46 Comment
  SD143805  Chylismia claviformis subsp. yumae G. K. Helmkamp, E. Helmkamp 1998-1-24 2570 Imperial Between Highway I-8 and the All American Canal across from the Brock Research Center, ca. 3.0 miles east of the junction of Highway CA-98 with Highway I-8. 46 Comment
  SD143806  Chylismia claviformis subsp. peirsonii G. K. Helmkamp, E. Helmkamp 1998-1-23 2564 Imperial 18.8 miles northwest of Westmoreland. -29 Comment
  SD143807  Chylismia claviformis subsp. peirsonii G. K. Helmkamp, E. Helmkamp 1998-1-24 2601 Imperial 4.2 miles north of Winterhaven on Picacho Rd. where the road crosses the canal. 91 Comment
  SD143809  Chylismia cardiophylla subsp. cardiophylla G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2896 Imperial 4.7 miles north of Winterhaven on Picacho Road and 1.0 mile northwest of the All-American Canal. 75 Comment
  SD143810  Chylismia brevipes subsp. arizonica G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2940 Imperial Colorado Desert, Imperial Dam area, along Ferguson Road, 1.5 miles north of Highway S-24. 91 Comment
  SD143817  Allionia incarnata var. villosa G. K. Helmkamp, E. Helmkamp 1998-1-24 2614 Imperial Highway CA-78, 2.0 miles northeast of Glamis. 167 Comment
  SD143818  Allionia incarnata var. villosa G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2923 Imperial Imperial Dam area, just south of the dam on Highway S-24. 75 Comment
  SD143822  Allionia incarnata var. villosa G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2903 Imperial 7.0 miles north of Winterhaven on Picacho Road and 1.7 miles east on powerline road. 198 Comment
  SD143823  Abronia villosa G. K. Helmkamp, E. Helmkamp 1998-1-24 2576 Imperial Between Highway I-8 and the All American Canal across from the Brock Research Center. 46 Comment
  SD143830  Sphaeralcea ambigua var. rugosa G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2958 Imperial Colorado Desert, Little Picacho Wash, along Picacho Road, 2.5 miles south of Picacho State Recreation Area. (IPB 10/07) 152 Comment
  SD143831  Sphaeralcea ambigua var. ambigua G. K. Helmkamp, E. Helmkamp 1998-1-24 2606 Imperial Ogilby Road, 14.2 miles south of the junction with Highway CA-78. 182 Comment
  SD143833  Horsfordia newberryi G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2959 Imperial Little Picacho Wash along Picacho Road, 2.5 miles south of Picacho State Recreation Area. 152 Comment
  SD143835  Eremalche rotundifolia G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2962 Imperial Little Picacho Wash along Picacho Road, 2.5 miles south of Picacho State Recreation Area. 152 Comment
  SD143847  Phacelia crenulata var. minutiflora G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2921 Imperial Colorado Desert: Imperial Dam area, just S of the dam on Hwy S-24 75 Comment
  SD143848  Phacelia crenulata var. ambigua G. K. Helmkamp, E. Helmkamp 1998-1-24 2593 Imperial Gravel road south of Highway I-8; rocky hills at west edge of Fort Yuma Indian Reservation. 60 Comment
  SD143852  Nama hispida var. spathulata G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2898 Imperial 7.0 miles north of Winterhaven on Picacho Road and 1.7 miles east on powerline road. 198 Comment
  SD143862  Mentzelia longiloba var. longiloba G. K. Helmkamp, W. A. Helmkamp 1998-3-18 2873 Imperial Between Hwy I-8 & the All-American Canal across from the Brock Research Center (ca. 3 mi. east of the jct of Hwy CA-98 with I-8). 46 Comment
  SD143863  Mentzelia longiloba var. longiloba G. K. Helmkamp, E. Helmkamp 1998-1-24 2575 Imperial Between Hwy I-8 & the All-American Canal across from the Brock Research Center (ca. 3 mi. east of the jct of Hwy CA-98 with Hwy I-8). 46 Comment
  SD143865  Mentzelia involucrata G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2893 Imperial 4.7 miles N of Winterhaven on Picacho Road and 1 mile NW of the All-American Canal. Unnamed wash. 75 Comment
  SD143890  Marina parryi G. K. Helmkamp, E. Helmkamp 1998-1-24 2610 Imperial Ogilby Road, 14.2 miles south of the junction with Highway California 78; vicinity of Tumco Wash. 182 Comment
  SD143899  Lupinus arizonicus G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2885 Imperial 4.7 mi N of Winterhaven on Picacho rd & 1 mi NW of the All-American Canal. 75 Comment
  SD143900  Lupinus arizonicus G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2915 Imperial Along Hwy S-24 betwn the All-American Canal & the Colorado River, 2.0 mi N of Laguna Dam. 75 Comment
  SD143903  Acmispon maritimus var. brevivexillus G. K. Helmkamp, E. Helmkamp 1998-1-24 2611 Imperial Ogilby Road, 14.2 miles south of the junction with Highway CA-78 (vicinity of Tumco Wash), broad sandy wash, disturbed roadside soil. (IPB 10/07) 182 Comment
  SD143908  Dalea mollis G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2917 Imperial Along Highway S-24 between the All-American Canal and the Colorado River, 2.0 miles north of Laguna Dam. Comment
  SD143909  Dalea mollis G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2872 Imperial Between Highway I-8 and the All-American Canal across from the Brock Research Center. 46 Comment
  SD143916  Astragalus lentiginosus var. borreganus G. K. Helmkamp, E. Helmkamp 1998-1-24 2587 Imperial 0.2 mile south of junction of Ogilby Road and Highway I-8. 46 Comment
  SD143921  Euphorbia setiloba G. K. Helmkamp, E. Helmkamp 1998-1-24 2580 Imperial Between Highway I-8 and the All-American Canal across from the Brock Research Center. 46 Comment
  SD143922  Euphorbia setiloba G. K. Helmkamp, E. Helmkamp 1998-1-24 2603 Imperial Ogilby Road, 14.2 miles south of the junction with Highway CA-78. 182 Comment
  SD143923  Euphorbia setiloba G. K. Helmkamp, E. Helmkamp 1998-1-17 2554 Imperial Salton Sea ca. 2.0 miles northwest of Salton City at the end of Treadwell St. -60 Comment
  SD143925  Euphorbia pediculifera G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2934 Imperial Colorado Desert, Imperial Dam area just south of the dam on Hwy S-24 in rocky wash; 11SQG-3E 4N UTM10km cell 75 Comment
  SD143939  Brandegea bigelovii G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2902 Imperial 7 Mi. N of Winterhaven on Picacho Rd,; 1.7 mi. E on Powerline Rd. 198 Comment
  SD143945  Cressa truxillensis G. Helmkamp 1997-2-1 1293 Imperial Imperial Valley: Southwest of Niland along Sinclair Road and just east of Hatfield Road. 54 Comment
  SD143951  Beta vulgaris G. Helmkamp 1997-2-1 1298 Imperial Southwest of Niland, along Sinclair Road and just east of Hatfield Road. Common in mud beside irrigation ditch. (IPB 10/07) -54 Comment
Read comments
Feb 20 2010
  SD143953  Atriplex serenana G. K. Helmkamp, E. Helmkamp 1998-1-24 2621 Imperial North end of Calipatria at corner of Young Road and Highway 111. Comment
  SD143955  Spergularia marina G. Helmkamp 1997-2-1 1294 Imperial Imperial Valley: southwest of Niland along Sinclair Road just east of Hatfield Road Comment
  SD143958  Achyronychia cooperi G. K. Helmkamp, E. Helmkamp 1998-1-24 2591 Imperial Along US Hwy 186, 1.6 miles northeast of the Mexican border and Andrade 60 Comment
  SD143973  Lepidium lasiocarpum G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2919 Imperial Colorado Desert: Imperial Dam area, just south of the dam on highway S-24 75 Comment
  SD143977  Dithyrea californica G. K. Helmkamp, E. Helmkamp 1998-1-24 2585 Imperial 0.2 miles south of junction of Ogilby Road and Hwy I-8 46 Comment
  SD143987  Tiquilia palmeri G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2907 Imperial 7 mi N of Winterhaven on Picacho Rd and 1.7 mi. E on powerline rd. 198 Comment
  SD143999  Cryptantha maritima G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2936 Imperial Colorado Desert: Imperial Dam area, just S of the dam on Hwy. S-24. 75 Comment
  SD144000  Cryptantha maritima G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2912 Imperial Along Hwy. S-24 between the All-American Canal and the Colorado River, 2.0 mi. N of Laguna Dam. 75 Comment
  SD144001  Cryptantha holoptera G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2928 Imperial Colorado Desert: Imperial Dam area, just S of the dam on Hwy. S-24. 75 Comment
  SD144002  Cryptantha costata G. K. Helmkamp, E. Helmkamp 1998-1-24 2588 Imperial 0.2 mi. S of jct. of Ogilby Rd. and Hwy. I-8. 46 Comment
  SD144004  Cryptantha barbigera G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2932 Imperial Colorado Desert: Imperial Dam area, just S of the dam on Hwy. S-24. 75 Comment
  SD144006  Cryptantha angustifolia G. K. Helmkamp, E. A. Helmkamp 1998-1-24 2586 Imperial 0.2 mi. S of jct. of Ogilby Rd. and Hwy I-8. 46 Comment
  SD144007  Cryptantha angustifolia G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2884 Imperial 4.7 mi. N of Winterhaven on Picacho Rd and 1 mi. NW of the All-American Canal. 75 Comment
  SD144020  Psathyrotes ramosissima G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2880 Imperial 4.7 mi. N of Winterhaven on Picacho Rd. & 1 mi. NW of the All-American Canal. 75 Comment
  SD144023  Perityle emoryi G. Helmkamp, E. Helmkamp 1998-1-17 2553 Imperial Salton Sea about 2 miles NW of Salton City at the end of Treadwell St. 67 Comment
  SD144025  Perityle emoryi G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2924 Imperial Colorado Desert: Imperial Dam area, just S of the dam on Hwy S-24. 75 Comment
  SD144028  Palafoxia arida G. K. Helmkamp, E. Helmkamp 1998-1-24 2589 Imperial 0.2 mi S of jct of Ogilby Rd and Hwy I-8. 46 Comment
  SD144049  Encelia frutescens var. frutescens G. K. Helmkamp, E. Helmkamp 1998-1-28 2628 Imperial West Mesa: Jeep trail S of Hwy CA-98 along the Mexican border, 2.2 mi. W of Mt. Signal Rd. 67 Comment
  SD144056  Chaenactis carphoclinia var. carphoclinia G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2897 Imperial 4.7 mi. N of Winterhaven on Picacho Rd & 1 mi. NW of the All-American Canal. 75 Comment
  SD144060  Baileya pleniradiata G. K. Helmkamp, E. Helmkamp 1998-1-24 2584 Imperial 0.2 mi. S of jct of Ogilby Rd & Hwy I-8 46 Comment
  SD144061  Baileya pauciradiata G. K. Helmkamp, E. Helmkamp 1998-1-24 2573 Imperial Between Hwy I-8 & the All-American Canal across form the Brock Research Center (ca. 3 mi. E of the jct of Hwy CA-98 with Hwy I-8) 46 Comment
  SD144072  Ambrosia ilicifolia G. K. Helmkamp, E. Helmkamp 1998-3-19 2957 Imperial Colorado Desert: Little Picacho Wash along Picacho Rd. 2.5 mi. S of Picacho State Recreation Area. 152 Comment
  SD144073  Ambrosia dumosa G. K. Helmkamp, E. Helmkamp 1998-1-23 2562 Imperial On the W side of Hwy 86, 18.8 mi NW of Westmoreland. Comment
  SD144109  Schismus arabicus G. K. Helmkamp, E. Helmkamp 1998-2-24 2600 Imperial 4.2 mi. N of Winterhaven on Picacho Rd, where the road crosses the canal, broad wash 91 Comment
  SD144114  Poa annua G. Helmkamp 1997-2-1 1295 Imperial Southwest of Niland, along Sinclair Road, just east of Hatfield Road, common in mud beside irrigation ditch; -54 Comment
  SD144115  Hilaria rigida G. K. Helmkamp, E. Helmkamp 1998-1-24 Imperial Gravel Rd S of Hwy I-8. Rocky hills at W edge of Fort Yuma Indian Reservation 60 Comment
  SD144132  Aristida californica var. californica G. K. Helmkamp, E. Helmkamp 1998-1-24 2574 Imperial Between Hwy I-8 and the All-American Canal, across from the Brock Research Center (ca. 3 miles east of the junction of Hwy CA-98 with Hwy I-8) 46 Comment
  SD144447  Eschscholzia minutiflora G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2929 Imperial Colorado Desert: Imperial Dam area, just south of the dam on Highway S-24. 75 Comment
  SD144449  Chylismia claviformis subsp. peirsonii G. K. Helmkamp, E. Helmkamp 1998-1-28 2624 Imperial 6.4 miles east of Highway CA-115 on Titsworth Road, ca. 2.5 miles south of point where Highway 115 turns south again, east of Calipatria. -39 Comment
  SD144451  Abronia villosa var. villosa G. K. Helmkamp, E. Helmkamp 1998-1-28 14445 Imperial West Mesa, jeep trail S of Hwy 98 along the Mexican border, 2.2 mi W of Mt. Signal Rd 67 Comment
  SD144482  Cryptantha angustifolia G. K. Helmkamp, E. Helmkamp 1998-1-28 2633 Imperial 6 mi WNW of Ocotillo on Hwy S-2. 152 Comment
  SD144495  Justicia californica G. K. Helmkamp, E. Helmkamp 1998-1-28 2630 Imperial 6 mi WNW of Ocotillo on Hwy S-2. 152 Comment
  SD144511  Ephedra trifurca G. K. Helmkamp, E. Helmkamp 1998-1-24 2569 Imperial Between Hwy I-8 and the All-American Canal, across from the Brock Research Center (ca. 3 miles east of the junction of Hwy CA-98 with Hwy I-8). (IPB 10/07) 46 Comment
  SEINET2055787 Image available Lotus strigosus George K. Helmkamp, E. A. Helmkamp 2001-3-17 6287 Imperial Colorado Desert; Ogilby Rd.,15.3 mi south of CA-78. 167 Comment
  SEINET2055788 Image available Lupinus arizonicus George K. Helmkamp, E. A. Helmkamp 2001-3-17 6292 Imperial Colorado Desert: Ogilby Rd. 15.4 mi south of Ca-78. 167 Comment
  SEINET2055789 Image available Ambrosia dumosa George K. Helmkamp, E. A. Helmkamp 2001-3-17 6290 Imperial Colorado Desert; Ogilby Rd. 15.4 mi south of CA-78. 168 Comment
  SEINET3002099 Image available Horsfordia newberryi George K. Helmkamp, E. A. Helmkamp 1998-1 2959 Imperial Little Picacho Wash along Picacho Rd, 2.5 mi. S of Picacho State Recreation Area 152 Comment
  SEINET3084197 Image available Tiquilia palmeri George K. Helmkamp, E. A. Helmkamp 1998-3-18 2907 Imperial Sonoran (Colorado) Desert; 7 mi. north of Winterhaven on Picacho Rd & 1.7 mi. E on powerline rd. 198 Comment
  SEINET3084411 Image available Cryptantha holoptera G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2928 Imperial Colorado desert: Imperial Dam area, just S of the dam on Hwy S-24 76 Comment
  SEINET3088066 Image available Eriogonum deflexum var. deflexum George K. Helmkamp, E. A. Helmkamp 1998-3-18 2899 Imperial Sonoran (Colorado) Desert; 7 mi. north of Winterhaven on Picacho Rd & 1.7 mi. E on powerline rd. 198 Comment
  SEINET3088067 Image available Gilia stellata G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2953 Imperial Colorado Desert: Little Picacho Wash along Picacho Rd., 2.5 mi. S of Picacho State Recreation Area. 152 Comment
  SEINET3090254 Image available Euphorbia setiloba George K. Helmkamp, E. Helmkamp 1998-1-24 2603 Imperial Sonoran (Colorado) Desert; Ogilby Rd, 14.2 mi. south of the junction with Calif. Hwy 78, vicinity of Tumco Wash 183 Comment
  SEINET3091556 Image available Nama hispida var. spathulata George K. Helmkamp, E. A. Helmkamp 1998-3-18 2898 Imperial 7 mi. N of Winterhaven on Picacho Rd & 1.7 mi. E on powerline rd. 198 Comment
  SEINET3092214 Image available Allionia incarnata George K. Helmkamp, E. A. Helmkamp 1998-3-18 2903 Imperial 7 mi. N of Winterhaven of Picacho Rd & 1.7 mi. E on powerline rd. [UTM 10 km call: 11SQG-2E, 3N. Unnamed Wash.] 198 Comment
  SEINET3093422 Image available Camissonia refracta George K. Helmkamp, E. A. Helmkamp 1998-3-19 2951 Imperial Colorado Desert: Little Picacho Wash along Picacho Rd. 2.5 mi. S of Picacho State Recreation Area. 152 Comment
  SEINET3094631 Image available Mentzelia multiflora subsp. longiloba George K. Helmkamp, E. A. Helmkamp 1998-3-18 2873 Imperial Sonoran (Colorado) Desert; between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the junction of Hwy Calif Hwy 98 with I-8). 46 Comment
  SEINET842642  Mentzelia longiloba var. longiloba G. K. Helmkamp, E. Helmkamp 1998-1 2575 Imperial Between Hwy. I-8 & the All-American Canal across from the Brock Research Center (ca. 3 miles E of the junction of Hwy. CA-98 with Hwy. I-8) 45 Comment
  UCD119014  Cryptantha costata G. Helmkamp 1988-2-28 s.n. Imperial just north of Signal Mountain, south of Highway 98. 30 Comment
  UCD119583  Cryptantha angustifolia G. Helmkamp 1988-2-28 s.n. Imperial just north of Signal Mountain, south of Highway 98. 30 Comment
  UCD170727  Fagonia laevis G. K. Helmkamp; E. Helmkamp 1998-1-24 2597 Imperial Sonoran (Colorado) Desert, 4.2 mi. north of Winterhaven on Picacho Rd, where the road crosses the canal. 91 Comment
  UCR100782  Camissonia cardiophylla George K. Helmkamp, E. A. Helmkamp 1998-3-18 2896 Imperial Sonoran (Colorado) Desert, 4.7 miles north of Winterhaven on Picacho Rd & 1 mile NW of the All-American Canal 76 Comment
  UCR100783  Chaenactis carphoclinia George K. Helmkamp, E. A. Helmkamp 1998-3-18 2897 Imperial Sonoran (Colorado) Desert, 4.7 miles north of Winterhaven on Picacho Rd & 1 mile NW of the All-American Canal 76 Comment
  UCR100784  Nama hispida var. spathulata George K. Helmkamp, E. A. Helmkamp 1998-3-18 2898 Imperial Sonoran (Colorado) Desert, 7 mi. north of Winterhaven on Picacho Rd & 1.7 mi. E on powerline rd. 198 Comment
  UCR100786  Eriogonum deflexum var. deflexum George K. Helmkamp, E. A. Helmkamp 1998-3-18 2899 Imperial Sonoran (Colorado) Desert, 7 mi. north of Winterhaven on Picacho Rd & 1.7 mi. E on powerline rd. 198 Comment
  UCR100793  Cryptantha angustifolia George K. Helmkamp, E. A. Helmkamp 1998-3-18 2884 Imperial Sonoran (Colorado) Desert, 4.7 miles north of Winterhaven on Picacho Rd & 1 mile NW of the All-American Canal 76 Comment
  UCR100794  Mohavea confertiflora George K. Helmkamp, E. A. Helmkamp 1998-3-18 2887 Imperial Sonoran (Colorado) Desert, 4.7 miles north of Winterhaven on Picacho Rd & 1 mile NW of the All-American Canal 76 Comment
  UCR100795  Tidestromia oblongifolia George K. Helmkamp, E. A. Helmkamp 1998-3-18 2886 Imperial Sonoran (Colorado) Desert, 4.7 miles north of Winterhaven on Picacho Rd & 1 mile NW of the All-American Canal 76 Comment
  UCR100796  Lupinus arizonicus George K. Helmkamp, E. A. Helmkamp 1998-3-18 2885 Imperial Sonoran (Colorado) Desert, 4.7 miles north of Winterhaven on Picacho Rd & 1 mile NW of the All-American Canal 76 Comment
  UCR100797  Larrea tridentata George K. Helmkamp, E. A. Helmkamp 1998-3-18 2888 Imperial Sonoran (Colorado) Desert, 4.7 miles north of Winterhaven on Picacho Rd & 1 mile NW of the All-American Canal 76 Comment
  UCR100798  Eriogonum thomasii George K. Helmkamp, E. A. Helmkamp 1998-3-18 2889 Imperial Sonoran (Colorado) Desert, 4.7 miles north of Winterhaven on Picacho Rd & 1 mile NW of the All-American Canal 76 Comment
  UCR100799  Chorizanthe corrugata George K. Helmkamp, E. A. Helmkamp 1998-3-18 2890 Imperial Sonoran (Colorado) Desert, 4.7 miles north of Winterhaven on Picacho Rd & 1 mile NW of the All-American Canal 76 Comment
  UCR100800  Phacelia crenulata var. crenulata George K. Helmkamp, E. A. Helmkamp 1998-3-18 2891 Imperial Sonoran (Colorado) Desert, 4.7 miles north of Winterhaven on Picacho Rd & 1 mile NW of the All-American Canal 76 Comment
  UCR100801  Mentzelia involucrata George K. Helmkamp, E. A. Helmkamp 1998-3-18 2893 Imperial Sonoran (Colorado) Desert, 4.7 miles north of Winterhaven on Picacho Rd & 1 mile NW of the All-American Canal 76 Comment
  UCR100802  Achyronychia cooperi George K. Helmkamp, E. A. Helmkamp 1998-3-18 2892 Imperial Sonoran (Colorado) Desert, 4.7 miles north of Winterhaven on Picacho Rd & 1 mile NW of the All-American Canal 76 Comment
  UCR100845  Monoptilon bellioides George K. Helmkamp, E. A. Helmkamp 1998-3-18 2883 Imperial Sonoran (Colorado) Desert, 4.7 miles north of Winterhaven on Picacho Rd & 1 mile NW of the All-American Canal 76 Comment
  UCR100846  Aliciella latifolia George K. Helmkamp, E. A. Helmkamp 1998-3-18 2882 Imperial Sonoran (Colorado) Desert, 4.7 miles north of Winterhaven on Picacho Rd & 1 mile NW of the All-American Canal 76 Comment
  UCR100847  Nama demissa George K. Helmkamp, E. A. Helmkamp 1998-3-18 2881 Imperial Sonoran (Colorado) Desert, 4.7 miles north of Winterhaven on Picacho Rd & 1 mile NW of the All-American Canal 76 Comment
  UCR100848  Psathyrotes ramosissima George K. Helmkamp, E. A. Helmkamp 1998-3-18 2880 Imperial Sonoran (Colorado) Desert, 4.7 miles north of Winterhaven on Picacho Rd & 1 mile NW of the All-American Canal 76 Comment
  UCR100849  Eriogonum thomasii George K. Helmkamp, E. A. Helmkamp 1998-3-18 2879 Imperial Sonoran (Colorado) Desert, 4.7 miles north of Winterhaven on Picacho Rd & 1 mile NW of the All-American Canal 76 Comment
  UCR100850  Eschscholzia minutiflora George K. Helmkamp, E. A. Helmkamp 1998-3-18 2878 Imperial Sonoran (Colorado) Desert, 4.7 miles north of Winterhaven on Picacho Rd & 1 mile NW of the All-American Canal 76 Comment
  UCR100851  Brassica tournefortii George K. Helmkamp, E. A. Helmkamp 1998-3-18 2877 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the junction of Hwy Calif Hwy 98 with I-8) 46 Comment
  UCR100852  Hesperocallis undulata George K. Helmkamp, E. A. Helmkamp 1998-3-18 2876 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the junction of Hwy Calif Hwy 98 with I-8) 46 Comment
  UCR100853  Baileya pauciradiata George K. Helmkamp, E. A. Helmkamp 1998-3-18 2875 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the junction of Hwy Calif Hwy 98 with I-8) 46 Comment
  UCR100854  Oenothera deltoides var. deltoides George K. Helmkamp, E. A. Helmkamp 1998-3-18 2874 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the junction of Hwy Calif Hwy 98 with I-8) 46 Comment
  UCR100855  Mentzelia longiloba var. longiloba George K. Helmkamp, E. A. Helmkamp 1998-3-18 2873 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the junction of Hwy Calif Hwy 98 with I-8) 46 Comment
  UCR100856  Dalea mollis George K. Helmkamp, E. A. Helmkamp 1998-3-18 2872 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the junction of Hwy Calif Hwy 98 with I-8) 46 Comment
  UCR100857  Tiquilia plicata George K. Helmkamp, E. A. Helmkamp 1998-3-18 2871 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the junction of Hwy Calif Hwy 98 with I-8) 46 Comment
  UCR100858  Ephedra trifurca George K. Helmkamp, E. A. Helmkamp 1998-3-18 2870 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the junction of Hwy Calif Hwy 98 with I-8) 46 Comment
  UCR100859  Plantago ovata George K. Helmkamp, E. A. Helmkamp 1998-3-18 2869 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the junction of Hwy Calif Hwy 98 with I-8) 46 Comment
  UCR100860  Camissonia claviformis subsp. yumae George K. Helmkamp, E. A. Helmkamp 1998-3-18 2868 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the junction of Hwy Calif Hwy 98 with I-8) 46 Comment
  UCR100861  Eschscholzia minutiflora George K. Helmkamp, E. A. Helmkamp 1998-3-19 2929 Imperial Sonoran (Colorado) Desert, Imperial Dam area, just south of the dam on Hwy S-24. 76 Comment
  UCR100862  Chorizanthe rigida George K. Helmkamp, E. A. Helmkamp 1998-3-18 2894 Imperial Sonoran (Colorado) Desert, 4.7 miles north of Winterhaven on Picacho Rd & 1 mile NW of the All-American Canal 76 Comment
  UCR101032  Tiquilia palmeri George K. Helmkamp, E. A. Helmkamp 1998-3-18 2907 Imperial Sonoran (Colorado) Desert, 7 mi. north of Winterhaven on Picacho Rd & 1.7 mi. E on powerline rd. 198 Comment
  UCR101054  Ambrosia ilicifolia George K. Helmkamp, E. A. Helmkamp 1998-3-19 2957 Imperial Sonoran (Colorado) Desert, Little Picacho Wash along Picacho Rd, 2.5 mi. south of Picacho State Recreation Area 152 Comment
  UCR101073  Lotus strigosus George K. Helmkamp, E. A. Helmkamp 1998-3-18 2900 Imperial Sonoran (Colorado) Desert, 7 mi. north of Winterhaven on Picacho Rd & 1.7 mi. E on powerline rd. 198 Comment
  UCR101074  Euphorbia setiloba George K. Helmkamp, E. A. Helmkamp 1998-3-18 2901 Imperial Sonoran (Colorado) Desert, 7 mi. north of Winterhaven on Picacho Rd & 1.7 mi. E on powerline rd. 198 Comment
  UCR101075  Brandegea bigelovii George K. Helmkamp, E. A. Helmkamp 1998-3-18 2902 Imperial Sonoran (Colorado) Desert, 7 mi. north of Winterhaven on Picacho Rd & 1.7 mi. E on powerline rd. 198 Comment
  UCR101076  Allionia incarnata George K. Helmkamp, E. A. Helmkamp 1998-3-18 2903 Imperial Sonoran (Colorado) Desert, 7 mi. north of Winterhaven on Picacho Rd & 1.7 mi. E on powerline rd. 198 Comment
  UCR101077  Dalea mollissima George K. Helmkamp, E. A. Helmkamp 1998-3-18 2904 Imperial Sonoran (Colorado) Desert, 7 mi. north of Winterhaven on Picacho Rd & 1.7 mi. E on powerline rd. 198 Comment
  UCR101078  Fagonia laevis George K. Helmkamp, E. A. Helmkamp 1998-3-18 2905 Imperial Sonoran (Colorado) Desert, 7 mi. north of Winterhaven on Picacho Rd & 1.7 mi. E on powerline rd. 198 Comment
  UCR101079  Ditaxis neomexicana George K. Helmkamp, E. A. Helmkamp 1998-3-18 2906 Imperial Sonoran (Colorado) Desert, 7 mi. north of Winterhaven on Picacho Rd & 1.7 mi. E on powerline rd. 198 Comment
  UCR101082  Sphaeralcea ambigua var. rugosa George K. Helmkamp, E. A. Helmkamp 1998-3-19 2958 Imperial Sonoran (Colorado) Desert, Little Picacho Wash along Picacho Rd, 2.5 mi. south of Picacho State Recreation Area 152 Comment
  UCR101083  Horsfordia newberryi George K. Helmkamp, E. A. Helmkamp 1998-3-19 2959 Imperial Sonoran (Colorado) Desert, Little Picacho Wash along Picacho Rd, 2.5 mi. south of Picacho State Recreation Area 152 Comment
  UCR101084  Atrichoseris platyphylla George K. Helmkamp, E. A. Helmkamp 1998-3-19 2960 Imperial Sonoran (Colorado) Desert, Little Picacho Wash along Picacho Rd, 2.5 mi. south of Picacho State Recreation Area 152 Comment
  UCR101086  Eremalche rotundifolia George K. Helmkamp, E. A. Helmkamp 1998-3-19 2962 Imperial Sonoran (Colorado) Desert, Little Picacho Wash along Picacho Rd, 2.5 mi. south of Picacho State Recreation Area 152 Comment
  UCR101090  Cryptantha holoptera George K. Helmkamp, E. A. Helmkamp 1998-3-19 2928 Imperial Sonoran (Colorado) Desert, Imperial Dam area, just south of the dam on Hwy S-24. 76 Comment
  UCR101117  Aristida adscensionis George K. Helmkamp, E. A. Helmkamp 1998-3-19 2908 Imperial Sonoran (Colorado) Desert, along Hwy S-24 between the All-American Canal & the Colorado River, 2.0 mi. north of Laguna Dam. 76 Comment
  UCR101118  Hesperocallis undulata George K. Helmkamp, E. A. Helmkamp 1998-3-19 2943 Imperial Sonoran (Colorado) Desert, Imperial Dam area, along Ferguson Rd, 1.5 mi. north of Hwy S-24. 91 Comment
  UCR101119  Aliciella latifolia George K. Helmkamp, E. A. Helmkamp 1998-3-19 2944 Imperial Sonoran (Colorado) Desert, Little Picacho Wash along Picacho Rd, 2.5 mi. south of Picacho State Recreation Area 152 Comment
  UCR101120  Camissonia cardiophylla George K. Helmkamp, E. A. Helmkamp 1998-3-19 2945 Imperial Sonoran (Colorado) Desert, Little Picacho Wash along Picacho Rd, 2.5 mi. south of Picacho State Recreation Area 152 Comment
  UCR101121  Eriogonum thomasii George K. Helmkamp, E. A. Helmkamp 1998-3-19 2946 Imperial Sonoran (Colorado) Desert, Little Picacho Wash along Picacho Rd, 2.5 mi. south of Picacho State Recreation Area 152 Comment
  UCR101122  Hymenoclea salsola George K. Helmkamp, E. A. Helmkamp 1998-3-19 2947 Imperial Sonoran (Colorado) Desert, Little Picacho Wash along Picacho Rd, 2.5 mi. south of Picacho State Recreation Area 152 Comment
  UCR101130  Linanthus jonesii George K. Helmkamp, E. A. Helmkamp 1998-3-19 2948 Imperial Sonoran (Colorado) Desert, Little Picacho Wash along Picacho Rd, 2.5 mi. south of Picacho State Recreation Area 152 Comment
  UCR101131  Nemacladus orientalis George K. Helmkamp, E. A. Helmkamp 1998-3-19 2949 Imperial Sonoran (Colorado) Desert, Little Picacho Wash along Picacho Rd, 2.5 mi. south of Picacho State Recreation Area 152 Comment
  UCR101132  Nama demissa var. demissa George K. Helmkamp, E. A. Helmkamp 1998-3-19 2950 Imperial Sonoran (Colorado) Desert, Little Picacho Wash along Picacho Rd, 2.5 mi. south of Picacho State Recreation Area 152 Comment
  UCR101133  Camissonia refracta George K. Helmkamp, E. A. Helmkamp 1998-3-19 2951 Imperial Sonoran (Colorado) Desert, Little Picacho Wash along Picacho Rd, 2.5 mi. south of Picacho State Recreation Area 152 Comment
  UCR101134  Camissonia chamaenerioides George K. Helmkamp, E. A. Helmkamp 1998-3-19 2951 A Imperial Sonoran (Colorado) Desert, Little Picacho Wash along Picacho Rd, 2.5 mi. south of Picacho State Recreation Area 152 Comment
  UCR101135  Eriogonum thomasii George K. Helmkamp, E. A. Helmkamp 1998-3-19 2952 Imperial Sonoran (Colorado) Desert, Little Picacho Wash along Picacho Rd, 2.5 mi. south of Picacho State Recreation Area 152 Comment
  UCR101136  Gilia stellata George K. Helmkamp, E. A. Helmkamp 1998-3-19 2953 Imperial Sonoran (Colorado) Desert, Little Picacho Wash along Picacho Rd, 2.5 mi. south of Picacho State Recreation Area 152 Comment
  UCR101137  Brassica tournefortii George K. Helmkamp, E. A. Helmkamp 1998-3-19 2955 Imperial Sonoran (Colorado) Desert, Little Picacho Wash along Picacho Rd, 2.5 mi. south of Picacho State Recreation Area 152 Comment
  UCR101138  Trichoptilium incisum George K. Helmkamp, E. A. Helmkamp 1998-3-19 2956 Imperial Sonoran (Colorado) Desert, Little Picacho Wash along Picacho Rd, 2.5 mi. south of Picacho State Recreation Area 152 Comment
  UCR103342  Polygonum ramosissimum George K. Helmkamp, E. Helmkamp 1998-1-24 2622 Imperial Sonoran (Colorado) Desert, N end of Calipatria at corner of Young Rd & Calif. Hwy 111 -49 Comment
  UCR103343  Camissonia claviformis subsp. yumae George K. Helmkamp, E. Helmkamp 1998-1-24 2592 Imperial Sonoran (Colorado) Desert, Gravel Rd south of Hwy I-8. Rocky hills at W edge of Fort Yuma Indian Reservation. 61 Comment
  UCR103345  Camissonia claviformis subsp. yumae George K. Helmkamp, E. Helmkamp 1998-1-24 2581 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the jct of Calif. Hwy 98 with Hwy I-8) 46 Comment
  UCR103349  Camissonia claviformis subsp. peirsonii George K. Helmkamp, E. Helmkamp 1998-1-24 2601 Imperial Sonoran (Colorado) Desert, 4.2 mi. north of Winterhaven on Picacho Rd, where the road crosses the canal. 91 Comment
  UCR103350  Lycium andersonii George K. Helmkamp, E. Helmkamp 1998-1-24 2607 Imperial Sonoran (Colorado) Desert, Ogilby Rd, 14.2 mi. south of the junction with Calif. Hwy 78, vicinity of Tumco Wash 183 Comment
  UCR103353  Cryptantha maritima George K. Helmkamp, E. Helmkamp 1998-1-24 2595 Imperial Sonoran (Colorado) Desert, Gravel Rd south of Hwy I-8. Rocky hills at W edge of Fort Yuma Indian Reservation. 61 Comment
  UCR103354  Phacelia crenulata var. ambigua George K. Helmkamp, E. Helmkamp 1998-1-24 2593 Imperial Sonoran (Colorado) Desert, Gravel Rd south of Hwy I-8. Rocky hills at W edge of Fort Yuma Indian Reservation. 61 Comment
  UCR103356  Fagonia laevis George K. Helmkamp, E. Helmkamp 1998-1-24 2597 Imperial Sonoran (Colorado) Desert, 4.2 mi. north of Winterhaven on Picacho Rd, where the road crosses the canal. 91 Comment
  UCR103357  Perityle emoryi George K. Helmkamp, E. Helmkamp 1998-1-24 2598 Imperial Sonoran (Colorado) Desert, 4.2 mi. north of Winterhaven on Picacho Rd, where the road crosses the canal. 91 Comment
  UCR103358  Nama demissa var. demissa George K. Helmkamp, E. Helmkamp 1998-1-24 2599 Imperial Sonoran (Colorado) Desert, 4.2 mi. north of Winterhaven on Picacho Rd, where the road crosses the canal. 91 Comment
  UCR103359  Cryptantha costata George K. Helmkamp, E. Helmkamp 1998-1-24 2588 Imperial Sonoran (Colorado) Desert, 0.2 mi. south of junction of Ogilby Rd & Hwy I-8 46 Comment
  UCR103360  Abronia villosa George K. Helmkamp, E. Helmkamp 1998-1-24 2590 Imperial Sonoran (Colorado) Desert, Along Hwy US-186, 1.6 mi. NE of the Mexican Border & Andrade. 61 Comment
  UCR103362  Schismus arabicus George K. Helmkamp, E. Helmkamp 1998-1-24 2600 Imperial Sonoran (Colorado) Desert, 4.2 mi. north of Winterhaven on Picacho Rd, where the road crosses the canal. 91 Comment
  UCR103597  Pectocarya heterocarpa George K. Helmkamp, E. A. Helmkamp 1998-3-19 2937 Imperial Sonoran (Colorado) Desert, Imperial Dam area, just south of the dam on Hwy S-24. 76 Comment
  UCR103598  Allionia incarnata George K. Helmkamp, E. A. Helmkamp 1998-3-19 2939 Imperial Sonoran (Colorado) Desert, Imperial Dam area, just south of the dam on Hwy S-24. 76 Comment
  UCR103599  Phacelia crenulata var. crenulata George K. Helmkamp, E. A. Helmkamp 1998-3-19 2938 Imperial Sonoran (Colorado) Desert, Imperial Dam area, just south of the dam on Hwy S-24. 76 Comment
  UCR103600  Cryptantha maritima George K. Helmkamp, E. A. Helmkamp 1998-3-19 2936 Imperial Sonoran (Colorado) Desert, Imperial Dam area, just south of the dam on Hwy S-24. 76 Comment
  UCR103601  Euphorbia pediculifera George K. Helmkamp, E. A. Helmkamp 1998-3-19 2934 Imperial Sonoran (Colorado) Desert, Imperial Dam area, just south of the dam on Hwy S-24. 76 Comment
  UCR103602  Oligomeris linifolia George K. Helmkamp, E. A. Helmkamp 1998-3-19 2935 Imperial Sonoran (Colorado) Desert, Imperial Dam area, just south of the dam on Hwy S-24. 76 Comment
  UCR103603  Brassica rapa George K. Helmkamp 1997-2-1 1296 Imperial Sonoran (Colorado) Desert, Imperial Valley, SW of Niland along Sinclair Rd and just east of Hatfield Rd. -55 Comment
  UCR103604  Beta macrocarpa George K. Helmkamp 1997-2-1 1298 Imperial Sonoran (Colorado) Desert, Imperial Valley, SW of Niland along Sinclair Rd and just east of Hatfield Rd. -55 Comment
  UCR103605  Chenopodium murale George K. Helmkamp 1997-2-1 1297 Imperial Sonoran (Colorado) Desert, Imperial Valley, SW of Niland along Sinclair Rd and just east of Hatfield Rd. -55 Comment
  UCR103606  Camissonia brevipes subsp. arizonica George K. Helmkamp, E. A. Helmkamp 1998-3-19 2940 Imperial Sonoran (Colorado) Desert, Imperial Dam area, along Ferguson Rd, 1.5 mi. north of Hwy S-24. 91 Comment
  UCR103607  Atriplex hymenelytra George K. Helmkamp, E. A. Helmkamp 1998-3-19 2942 Imperial Sonoran (Colorado) Desert, Imperial Dam area, along Ferguson Rd, 1.5 mi. north of Hwy S-24. 91 Comment
  UCR103608  Hibiscus denudatus George K. Helmkamp, E. A. Helmkamp 1998-3-19 2941 Imperial Sonoran (Colorado) Desert, Imperial Dam area, along Ferguson Rd, 1.5 mi. north of Hwy S-24. 91 Comment
  UCR103609  Spergularia marina George K. Helmkamp 1997-2-1 1294 Imperial Sonoran (Colorado) Desert, Imperial Valley, SW of Niland along Sinclair Rd and just east of Hatfield Rd. -55 Comment
  UCR103610  Cressa truxillensis George K. Helmkamp 1997-2-1 1293 Imperial Sonoran (Colorado) Desert, Imperial Valley, SW of Niland along Sinclair Rd and just east of Hatfield Rd. -55 Comment
  UCR103611  Chenopodium murale George K. Helmkamp, E. Helmkamp 1998-2-10 2688 Imperial Sonoran (Colorado) Desert, SE Salton Sea, vicinity of Wister, drainage ditch at the jct of Pound & Davis Streets. -66 Comment
  UCR103612  Lotus salsuginosus var. brevivexillus George K. Helmkamp, E. Helmkamp 1998-1-24 2611 Imperial Sonoran (Colorado) Desert, Ogilby Rd, 14.2 mi. south of the junction with Calif. Hwy 78, vicinity of Tumco Wash 183 Comment
  UCR103613  Sphaeralcea ambigua George K. Helmkamp, E. Helmkamp 1998-1-24 2606 Imperial Sonoran (Colorado) Desert, Ogilby Rd, 14.2 mi. south of the junction with Calif. Hwy 78, vicinity of Tumco Wash 183 Comment
  UCR103614  Lepidium dictyotum George K. Helmkamp, E. Helmkamp 1998-1-24 2602 A Imperial Sonoran (Colorado) Desert, Ogilby Rd, 14.2 mi. south of the junction with Calif. Hwy 78, vicinity of Tumco Wash 183 Comment
  UCR103615  Chenopodium berlandieri George K. Helmkamp, E. Helmkamp 1998-1-24 2618 Imperial Sonoran (Colorado) Desert, Calif. Hwy 78, 2 mi. NE of Glamis 168 Comment
  UCR103616  Euphorbia setiloba George K. Helmkamp, E. Helmkamp 1998-1-24 2580 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the jct of Calif. Hwy 98 with Hwy I-8) 46 Comment
  UCR103617  Allionia incarnata George K. Helmkamp, E. A. Helmkamp 1998-3-19 2923 Imperial Sonoran (Colorado) Desert, Imperial Dam area, just south of the dam on Hwy S-24. 76 Comment
  UCR103618  Poa annua George K. Helmkamp 1997-2-1 1295 Imperial Sonoran (Colorado) Desert, Imperial Valley, SW of Niland along Sinclair Rd and just east of Hatfield Rd. -55 Comment
  UCR103619  Chaenactis carphoclinia var. carphoclinia George K. Helmkamp, E. A. Helmkamp 1998-3-19 2926 Imperial Sonoran (Colorado) Desert, Imperial Dam area, just south of the dam on Hwy S-24. 76 Comment
  UCR103620  Chenopodium murale George K. Helmkamp, E. A. Helmkamp 1998-3-19 2909 Imperial Sonoran (Colorado) Desert, along Hwy S-24 between the All-American Canal & the Colorado River, 2.0 mi. north of Laguna Dam. 76 Comment
  UCR103621  Phacelia crenulata var. crenulata George K. Helmkamp, E. A. Helmkamp 1998-3-19 2910 Imperial Sonoran (Colorado) Desert, along Hwy S-24 between the All-American Canal & the Colorado River, 2.0 mi. north of Laguna Dam. 76 Comment
  UCR103622  Cryptantha maritima George K. Helmkamp, E. A. Helmkamp 1998-3-19 2912 Imperial Sonoran (Colorado) Desert, along Hwy S-24 between the All-American Canal & the Colorado River, 2.0 mi. north of Laguna Dam. 76 Comment
  UCR103623  Heliotropium curassavicum George K. Helmkamp, E. A. Helmkamp 1998-3-19 2911 Imperial Sonoran (Colorado) Desert, along Hwy S-24 between the All-American Canal & the Colorado River, 2.0 mi. north of Laguna Dam. 76 Comment
  UCR103624  Mentzelia involucrata George K. Helmkamp, E. A. Helmkamp 1998-3-19 2927 Imperial Sonoran (Colorado) Desert, Imperial Dam area, just south of the dam on Hwy S-24. 76 Comment
  UCR103625  Geraea canescens George K. Helmkamp, E. A. Helmkamp 1998-3-19 2925 Imperial Sonoran (Colorado) Desert, Imperial Dam area, just south of the dam on Hwy S-24. 76 Comment
  UCR103626  Perityle emoryi George K. Helmkamp, E. A. Helmkamp 1998-3-19 2924 Imperial Sonoran (Colorado) Desert, Imperial Dam area, just south of the dam on Hwy S-24. 76 Comment
  UCR103627  Fagonia laevis George K. Helmkamp, E. A. Helmkamp 1998-3-19 2922 Imperial Sonoran (Colorado) Desert, Imperial Dam area, just south of the dam on Hwy S-24. 76 Comment
  UCR103628  Phacelia crenulata var. minutiflora George K. Helmkamp, E. A. Helmkamp 1998-3-19 2921 Imperial Sonoran (Colorado) Desert, Imperial Dam area, just south of the dam on Hwy S-24. 76 Comment
  UCR103629  Camissonia cardiophylla George K. Helmkamp, E. A. Helmkamp 1998-3-19 2920 Imperial Sonoran (Colorado) Desert, Imperial Dam area, just south of the dam on Hwy S-24. 76 Comment
  UCR103630  Lepidium lasiocarpum George K. Helmkamp, E. A. Helmkamp 1998-3-19 2919 Imperial Sonoran (Colorado) Desert, Imperial Dam area, just south of the dam on Hwy S-24. 76 Comment
  UCR103631  Dalea mollissima George K. Helmkamp, E. A. Helmkamp 1998-3-19 2917 Imperial Sonoran (Colorado) Desert, along Hwy S-24 between the All-American Canal & the Colorado River, 2.0 mi. north of Laguna Dam. 76 Comment
  UCR103632  Fagonia laevis George K. Helmkamp, E. A. Helmkamp 1998-3-19 2916 Imperial Sonoran (Colorado) Desert, along Hwy S-24 between the All-American Canal & the Colorado River, 2.0 mi. north of Laguna Dam. 76 Comment
  UCR103633  Lupinus arizonicus George K. Helmkamp, E. A. Helmkamp 1998-3-19 2915 Imperial Sonoran (Colorado) Desert, along Hwy S-24 between the All-American Canal & the Colorado River, 2.0 mi. north of Laguna Dam. 76 Comment
  UCR103634  Eschscholzia minutiflora George K. Helmkamp, E. A. Helmkamp 1998-3-19 2914 Imperial Sonoran (Colorado) Desert, along Hwy S-24 between the All-American Canal & the Colorado River, 2.0 mi. north of Laguna Dam. 76 Comment
  UCR103635  Cryptantha barbigera George K. Helmkamp, E. A. Helmkamp 1998-3-19 2913 Imperial Sonoran (Colorado) Desert, along Hwy S-24 between the All-American Canal & the Colorado River, 2.0 mi. north of Laguna Dam. 76 Comment
  UCR103636  Cryptantha barbigera George K. Helmkamp, E. A. Helmkamp 1998-3-19 2932 Imperial Sonoran (Colorado) Desert, Imperial Dam area, just south of the dam on Hwy S-24. 76 Comment
  UCR103637  Ditaxis neomexicana George K. Helmkamp, E. Helmkamp 1998-1-24 2604 Imperial Sonoran (Colorado) Desert, Ogilby Rd, 14.2 mi. south of the junction with Calif. Hwy 78, vicinity of Tumco Wash 183 Comment
  UCR103638  Euphorbia setiloba George K. Helmkamp, E. Helmkamp 1998-1-24 2603 Imperial Sonoran (Colorado) Desert, Ogilby Rd, 14.2 mi. south of the junction with Calif. Hwy 78, vicinity of Tumco Wash 183 Comment
  UCR103639  Atriplex serenana George K. Helmkamp, E. Helmkamp 1998-1-24 2621 Imperial Sonoran (Colorado) Desert, N end of Calipatria at corner of Young Rd & Calif. Hwy 111 -49 Comment
  UCR103640  Tidestromia oblongifolia George K. Helmkamp, E. Helmkamp 1998-1-24 2619 Imperial Sonoran (Colorado) Desert, Calif. Hwy 78, 2 mi. NE of Glamis 168 Comment
  UCR103641  Eriogonum deflexum George K. Helmkamp, E. Helmkamp 1998-1-24 2617 Imperial Sonoran (Colorado) Desert, Calif. Hwy 78, 2 mi. NE of Glamis 168 Comment
  UCR103642  Dalea mollissima George K. Helmkamp, E. Helmkamp 1998-1-28 2615 Imperial Sonoran (Colorado) Desert, Calif. Hwy 78, 2 mi. NE of Glamis 168 Comment
  UCR103643  Allionia incarnata George K. Helmkamp, E. Helmkamp 1998-1-24 2614 Imperial Sonoran (Colorado) Desert, Calif. Hwy 78, 2 mi. NE of Glamis 168 Comment
  UCR103644  Ditaxis neomexicana George K. Helmkamp, E. Helmkamp 1998-1-28 2632 Imperial Sonoran (Colorado) Desert, 6 mi. WNW of Ocotillo on Hwy S-2. 152 Comment
  UCR103645  Justicia californica George K. Helmkamp, E. Helmkamp 1998-1-28 2630 Imperial Sonoran (Colorado) Desert, 6 mi. WNW of Ocotillo on Hwy S-2. 152 Comment
  UCR103646  Cryptantha angustifolia George K. Helmkamp, E. Helmkamp 1998-1-28 2633 Imperial Sonoran (Colorado) Desert, 6 mi. WNW of Ocotillo on Hwy S-2. 152 Comment
  UCR103647  Castela emoryi George K. Helmkamp, E. Helmkamp 1998-1-28 2629 Imperial Sonoran (Colorado) Desert, Near the corner of Coyote Rd & Calif. Hwy 98, c. 5 mi. SE of Ocotillo. (Very near or at the Crucifixion Thorn Natural Area) 107 Comment
  UCR103648  Encelia frutescens George K. Helmkamp, E. Helmkamp 1998-1-28 2628 Imperial Sonoran (Colorado) Desert, West Mesa. Jeep trail south of Calif. Hwy 98 along the Mexican border, 2.2 mi. west of Mt. Signal Road. 67 Comment
  UCR103649  Baileya pauciradiata George K. Helmkamp, E. Helmkamp 1998-1-28 2627 Imperial Sonoran (Colorado) Desert, West Mesa. Jeep trail south of Calif. Hwy 98 along the Mexican border, 2.2 mi. west of Mt. Signal Road. 67 Comment
  UCR103650  Oenothera deltoides George K. Helmkamp, E. A. Helmkamp 1998-1-28 2626 Imperial Sonoran (Colorado) Desert, West Mesa. Jeep trail south of Calif. Hwy 98 along the Mexican border, 2.2 mi. west of Mt. Signal Road. 67 Comment
  UCR103651  Abronia villosa George K. Helmkamp, E. Helmkamp 1998-1-28 2625 Imperial Sonoran (Colorado) Desert, West Mesa. Jeep trail south of Calif. Hwy 98 along the Mexican border, 2.2 mi. west of Mt. Signal Road. 67 Comment
  UCR103652  Camissonia claviformis subsp. peirsonii George K. Helmkamp, E. Helmkamp 1998-1-28 2624 Imperial Sonoran (Colorado) Desert, 6.4 mi. east of Calif. Hwy 115 on Titsworth Rd, c. 2.5 mi. south of point where Hwy 115 turns S again, east of Calipatria. Past Highline Canal to East Mesa. -40 Comment
  UCR103653  Plantago ovata George K. Helmkamp, E. Helmkamp 1998-1-28 2623 Imperial Sonoran (Colorado) Desert, 6.4 mi. east of Calif. Hwy 115 on Titsworth Rd, c. 2.5 mi. south of point where Hwy 115 turns S again, east of Calipatria. Past Highline Canal to East Mesa. -40 Comment
  UCR103654  Euphorbia setiloba George K. Helmkamp, E. Helmkamp 1998-1-28 2634 Imperial Sonoran (Colorado) Desert, Just outside the border of Anza-Borrego State Park (& Co. line), 6 mi. WNW of Ocotillo on Hwy S-2. 152 Comment
  UCR103655  Oenothera deltoides George K. Helmkamp, E. A. Helmkamp 1998-1-24 2583 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the jct of Calif. Hwy 98 with Hwy I-8) 46 Comment
  UCR103656  Euphorbia setiloba George K. Helmkamp, E. A. Helmkamp 1998-1-17 2554 Imperial Salton Sea, c. 2 mi NW of Salton City at the end of Treadwell St. -61 Comment
  UCR103657  Camissonia claviformis subsp. claviformis George K. Helmkamp 1998-1-17 2552 Imperial Salton Sea, c. 2 mi NW of Salton City at the end of Treadwell St. -61 Comment
  UCR103658  Mentzelia longiloba var. longiloba George K. Helmkamp, E. Helmkamp 1998-1-24 2575 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the jct of Calif. Hwy 98 with Hwy I-8) 46 Comment
  UCR103659  Dalea mollis George K. Helmkamp, E. Helmkamp 1998-1-24 2577 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the jct of Calif. Hwy 98 with Hwy I-8) 46 Comment
  UCR103660  Baileya pauciradiata George K. Helmkamp, E. Helmkamp 1998-1-24 2573 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the jct of Calif. Hwy 98 with Hwy I-8) 46 Comment
  UCR103661  Aristida adscensionis George K. Helmkamp, E. Helmkamp 1998-1-24 2609 Imperial Sonoran (Colorado) Desert, Ogilby Rd, 14.2 mi. south of the junction with Calif. Hwy 78, vicinity of Tumco Wash 183 Comment
  UCR103662  Marina parryi George K. Helmkamp, E. Helmkamp 1998-1-24 2610 Imperial Sonoran (Colorado) Desert, Ogilby Rd, 14.2 mi. south of the junction with Calif. Hwy 78, vicinity of Tumco Wash 183 Comment
  UCR103663  Plantago ovata George K. Helmkamp, E. Helmkamp 1998-1-23 2561 Imperial Sonoran (Colorado) Desert, On the W side of Hwy 86, 18.8 mi. NW of Westmorland -30 Comment
  UCR103665  Oenothera deltoides George K. Helmkamp, E. A. Helmkamp 1998-1-23 2566 Imperial Sonoran (Colorado) Desert, On the W side of Hwy 86, 18.8 mi. NW of Westmorland -30 Comment
  UCR103666  Camissonia claviformis subsp. yumae George K. Helmkamp, E. Helmkamp 1998-1-24 2570 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the jct of Calif. Hwy 98 with Hwy I-8) 46 Comment
  UCR103667  Plantago ovata George K. Helmkamp, E. Helmkamp 1998-1-24 2572 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the jct of Calif. Hwy 98 with Hwy I-8) 46 Comment
  UCR103668  Cryptantha angustifolia George K. Helmkamp, E. Helmkamp 1998-1-23 2563 Imperial Sonoran (Colorado) Desert, On the W side of Hwy 86, 18.8 mi. NW of Westmorland -30 Comment
  UCR103669  Camissonia claviformis subsp. peirsonii George K. Helmkamp, E. Helmkamp 1998-1-23 2564 Imperial Sonoran (Colorado) Desert, On the W side of Hwy 86, 18.8 mi. NW of Westmorland -30 Comment
  UCR104805  Eriogonum thomasii George K. Helmkamp, E. Helmkamp 1998-1-24 2616 Imperial Sonoran (Colorado) Desert, Calif. Hwy 78, 2 mi. NE of Glamis 168 Comment
  UCR104848  Abronia villosa George K. Helmkamp, E. Helmkamp 1998-1-23 2567 Imperial Sonoran (Colorado) Desert, On the W side of Hwy 86, 18.8 mi. NW of Westmorland -30 Comment
  UCR104849  Ambrosia dumosa George K. Helmkamp, E. Helmkamp 1998-1-23 2562 Imperial Sonoran (Colorado) Desert, On the W side of Hwy 86, 18.8 mi. NW of Westmorland -30 Comment
  UCR104850  Aristida californica George K. Helmkamp, E. Helmkamp 1998-1-24 2574 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the jct of Calif. Hwy 98 with Hwy I-8) 46 Comment
  UCR104851  Geraea canescens George K. Helmkamp, E. Helmkamp 1998-1-24 2579 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the jct of Calif. Hwy 98 with Hwy I-8) 46 Comment
  UCR104852  Palafoxia arida George K. Helmkamp, E. Helmkamp 1998-1-24 2578 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the jct of Calif. Hwy 98 with Hwy I-8) 46 Comment
  UCR104853  Perityle emoryi George K. Helmkamp 1998-1-17 2553 Imperial Salton Sea, c. 2 mi NW of Salton City at the end of Treadwell St. -61 Comment
  UCR104855  Abronia villosa George K. Helmkamp, E. Helmkamp 1998-1-24 2576 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the jct of Calif. Hwy 98 with Hwy I-8) 46 Comment
  UCR104856  Bouteloua barbata George K. Helmkamp, E. Helmkamp 1998-1-24 2571 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the jct of Calif. Hwy 98 with Hwy I-8) 46 Comment
  UCR104857  Palafoxia arida George K. Helmkamp, E. Helmkamp 1998-1-23 2565 Imperial Sonoran (Colorado) Desert, On the W side of Hwy 86, 18.8 mi. NW of Westmorland -30 Comment
  UCR104858  Ephedra trifurca George K. Helmkamp, E. Helmkamp 1998-1-24 2569 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the jct of Calif. Hwy 98 with Hwy I-8) 46 Comment
  UCR104859  Geraea canescens George K. Helmkamp, E. Helmkamp 1998-1-23 2568 Imperial Sonoran (Colorado) Desert, On the W side of Hwy 86, 18.8 mi. NW of Westmorland -30 Comment
  UCR104876  Hilaria rigida George K. Helmkamp, E. Helmkamp 1998-1-24 2596 Imperial Sonoran (Colorado) Desert, Gravel Rd south of Hwy I-8. Rocky hills at W edge of Fort Yuma Indian Reservation. 61 Comment
  UCR104881  Rumex obtusifolius George K. Helmkamp, E. Helmkamp 1998-2-10 2687 Imperial Sonoran (Colorado) Desert, SE Salton Sea, vicinity of Wister, drainage ditch at the jct of Pound & Davis Streets. -66 Comment
  UCR106879  Asclepias albicans George K. Helmkamp, E. A. Helmkamp 1998-3-19 2962 A Imperial Sonoran (Colorado) Desert, Little Picacho Wash along Picacho Rd, 2.5 mi. south of Picacho State Recreation Area 152 Comment
  UCR120507  Abronia villosa var. villosa George K. Helmkamp, E. A. Helmkamp 2001-3-17 6272 Imperial Colorado Desert., Small canyon parallel to and south of I-8, 2.1 mi east of Sidewinder Rd. 76 Comment
  UCR120508  Gossypium hirsutum George K. Helmkamp, E. A. Helmkamp 2001-3-16 6264 Imperial Sonoran (Colorado) Desert, Imperial Valley, Andre Rd. and Lack Rd., southwest of Westmorland -46 Comment
  UCR120509  Allenrolfea occidentalis George K. Helmkamp, E. A. Helmkamp 2001-3-16 6267 Imperial Salton Sea., Almost barren saline soil at the north end of Desert Shores -61 Comment
  UCR120510  Convolvulus arvensis George K. Helmkamp, E. A. Helmkamp 2001-3-17 6269 Imperial Colorado Desert., Brawley, along Calif. Hwy 78 at the west end of the city -30 Comment
  UCR120516  Monoptilon bellioides George K. Helmkamp, E. A. Helmkamp 2001-3-17 6284 Imperial Sonoran (Colorado) Desert, Ogilby Rd., 15.4 miles south of Calif. Hwy 78 168 Comment
  UCR120517  Cryptantha holoptera George K. Helmkamp, E. A. Helmkamp 2001-3-17 6282 Imperial Sonoran (Colorado) Desert, Ogilby Rd., 15.4 miles south of Calif. Hwy 78 168 Comment
  UCR120518  Lotus strigosus George K. Helmkamp, E. A. Helmkamp 2001-3-17 6287 Imperial Sonoran (Colorado) Desert, Ogilby Rd., 15.4 miles south of Calif. Hwy 78 168 Comment
  UCR120519  Baileya pleniradiata George K. Helmkamp, E. A. Helmkamp 2001-3-17 6276 Imperial Colorado Desert., Small canyon parallel to and south of I-8, 2.1 mi east of Sidewinder Rd. 76 Comment
  UCR120520  Phacelia crenulata var. ambigua George K. Helmkamp, E. A. Helmkamp 2001-3-17 6277 Imperial Colorado Desert., Small canyon parallel to and south of I-8, 2.1 mi east of Sidewinder Rd. 76 Comment
  UCR120521  Langloisia setosissima subsp. setosissima George K. Helmkamp, E. A. Helmkamp 2001-3-17 6278 Imperial Colorado Desert., Small canyon parallel to and south of I-8, 2.1 mi east of Sidewinder Rd. 76 Comment
  UCR120522  Eschscholzia minutiflora George K. Helmkamp, E. A. Helmkamp 2001-3-17 6279 Imperial Colorado Desert., Small canyon parallel to and south of I-8, 2.1 mi east of Sidewinder Rd. 76 Comment
  UCR120523  Cryptantha angustifolia George K. Helmkamp, E. A. Helmkamp 2001-3-17 6273 Imperial Colorado Desert., Small canyon parallel to and south of I-8, 2.1 mi east of Sidewinder Rd. 76 Comment
  UCR120524  Dithyrea californica George K. Helmkamp, E. A. Helmkamp 2001-3-17 6274 Imperial Colorado Desert., Small canyon parallel to and south of I-8, 2.1 mi east of Sidewinder Rd. 76 Comment
  UCR120525  Achyronychia cooperi George K. Helmkamp, E. A. Helmkamp 2001-3-17 6275 Imperial Colorado Desert., Small canyon parallel to and south of I-8, 2.1 mi east of Sidewinder Rd. 76 Comment
  UCR120526  Ambrosia dumosa George K. Helmkamp, E. A. Helmkamp 2001-3-17 6290 Imperial Sonoran (Colorado) Desert, Ogilby Rd., 15.4 miles south of Calif. Hwy 78 168 Comment
  UCR120527  Langloisia setosissima subsp. setosissima George K. Helmkamp, E. A. Helmkamp 2001-3-17 6292 Imperial Sonoran (Colorado) Desert, Ogilby Rd., 15.4 miles south of Calif. Hwy 78 168 Comment
  UCR120528  Lupinus arizonicus George K. Helmkamp, E. A. Helmkamp 2001-3-17 6293 Imperial Sonoran (Colorado) Desert, Ogilby Rd., 15.4 miles south of Calif. Hwy 78 168 Comment
  UCR120529  Chaenactis carphoclinia var. carphoclinia George K. Helmkamp, E. A. Helmkamp 2001-3-17 6294 Imperial Sonoran (Colorado) Desert, Ogilby Rd., 15.4 miles south of Calif. Hwy 78 168 Comment
  UCR120530  Schismus arabicus George K. Helmkamp, E. A. Helmkamp 2001-3-17 6295 Imperial Sonoran (Colorado) Desert, Ogilby Rd., 15.4 miles south of Calif. Hwy 78 168 Comment
  UCR120531  Palafoxia arida var. arida George K. Helmkamp, E. A. Helmkamp 2001-3-17 6271 Imperial Colorado Desert., Small canyon parallel to and south of I-8, 2.1 mi east of Sidewinder Rd. 76 Comment
  UCR120532  Phacelia crenulata var. crenulata George K. Helmkamp, E. A. Helmkamp 2001-3-17 6296 Imperial Sonoran (Colorado) Desert, Ogilby Rd., 15.4 miles south of Calif. Hwy 78 168 Comment
  UCR120533  Aristida adscensionis George K. Helmkamp, E. A. Helmkamp 2001-3-17 6297 Imperial Sonoran (Colorado) Desert, Ogilby Rd., 15.4 miles south of Calif. Hwy 78 168 Comment
  UCR120535  Dalea mollissima George K. Helmkamp, E. A. Helmkamp 2001-3-17 6289 Imperial Sonoran (Colorado) Desert, Ogilby Rd., 15.4 miles south of Calif. Hwy 78 168 Comment
  UCR120743  Perityle emoryi George K. Helmkamp, E. A. Helmkamp 2001-3-17 6288 Imperial Sonoran (Colorado) Desert, Ogilby Rd., 15.4 miles south of Calif. Hwy 78 168 Comment
  UCR121146  Lepidium lasiocarpum George K. Helmkamp, E. A. Helmkamp 2001-3-17 6281 Imperial Sonoran (Colorado) Desert, Ogilby Rd., 15.4 miles south of Calif. Hwy 78 168 Comment
  UCR121147  Cryptantha maritima George K. Helmkamp, E. A. Helmkamp 2001-3-17 6286 Imperial Sonoran (Colorado) Desert, Ogilby Rd., 15.4 miles south of Calif. Hwy 78 168 Comment
  UCR121148  Cryptantha barbigera George K. Helmkamp, E. A. Helmkamp 2001-3-17 6285 Imperial Sonoran (Colorado) Desert, Ogilby Rd., 15.4 miles south of Calif. Hwy 78 168 Comment
  UCR121149  Polygonum argyrocoleon George K. Helmkamp, E. A. Helmkamp 2001-3-16 6263 Imperial Sonoran (Colorado) Desert, Imperial Valley, Andre Rd. and Lack Rd., southwest of Westmorland -46 Comment
  UCR121151  Chenopodium album George K. Helmkamp, E. A. Helmkamp 2001-3-16 6266 Imperial Colorado Desert., Ramer Lake -46 Comment
  UCR121152  Eschscholzia minutiflora George K. Helmkamp, E. A. Helmkamp 2001-3-17 6291 Imperial Sonoran (Colorado) Desert, Ogilby Rd., 15.4 miles south of Calif. Hwy 78 168 Comment
  UCR121153  Nama hispida George K. Helmkamp, E. A. Helmkamp 2001-3-17 6270 Imperial Colorado Desert., Small canyon parallel to and south of I-8, 2.1 mi east of Sidewinder Rd. 76 Comment
  UCR121154  Chenopodium serotinum George K. Helmkamp, E. A. Helmkamp 2001-3-16 6265 Imperial Colorado Desert., Ramer Lake -46 Comment
  UCR121155  Chenopodium murale George K. Helmkamp, E. A. Helmkamp 2001-3-16 6262 Imperial Sonoran (Colorado) Desert, Imperial Valley, Andre Rd. and Lack Rd., southwest of Westmorland -46 Comment
  UCR122606  Plantago ovata George K. Helmkamp, E. A. Helmkamp 2001-3-17 6280 Imperial Sonoran (Colorado) Desert, Ogilby Rd., 15.4 miles south of Calif. Hwy 78 168 Comment
  UCR122607  Rumex crispus George K. Helmkamp, E. A. Helmkamp 2001-3-16 6268 Imperial Salton Sea., Almost barren saline soil at the north end of Desert Shores -61 Comment
  UCR14591  Eriogonum deserticola George K. Helmkamp 1975-3-24 s.n. Imperial Sonoran (Colorado) Desert, Sand dunes immediately [west] of Glamis 40 Comment
  UCR15444  Chorizanthe corrugata George K. Helmkamp 1977-2-17 s.n. Imperial Sonoran (Colorado) Desert, Roadside, S-22, west of Salton City 61 Comment
  UCR163649  Hyptis emoryi George K. Helmkamp, E. A. Helmkamp 1998-1-24 2608 Imperial Sonoran (Colorado) Desert, Ogilby Rd, 14.2 mi. south of the junction with Calif. Hwy 78, vicinity of Tumco Wash 183 Comment
  UCR18520  Chorizanthe corrugata George K. Helmkamp 1975-3-24 s.n. Imperial Sonoran (Colorado) Desert, 8 miles east [on Ben Hulse Hwy/ Hwy 78] of Glamis 235 Comment
  UCR50448  Mohavea confertiflora George K. Helmkamp 1988-2-28 26 Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50449  Nemacladus tenuis var. aliformis George K. Helmkamp 1988-2-28 880228- 29 Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50450  Eucrypta micrantha George K. Helmkamp 1988-2-28 24 Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50451  Euphorbia setiloba George K. Helmkamp 1988-2-23 31 Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 mi WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 152 Comment
  UCR50452  Mirabilis tenuiloba George K. Helmkamp 1988-2-28 27 Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50453  Camissonia boothii George K. Helmkamp 1988-2-28 23 Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50454  Cryptantha maritima George K. Helmkamp 1988-2-28 880228- 01 Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50455  Senecio mohavensis George K. Helmkamp 1988-2-28 33 Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50456  Monoptilon bellioides George K. Helmkamp 1988-2-28 30 Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50457  Perityle emoryi George K. Helmkamp 1988-2-28 34 Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50458  Cryptantha costata George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, just N of Signal Mtn., south of Hwy 98 31 Comment
  UCR50959  Nicotiana obtusifolia George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50960  Physalis crassifolia George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50961  Camissonia claviformis George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50962  Camissonia claviformis George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, just N of Signal Mtn., south of Hwy 98 31 Comment
  UCR50963  Oenothera deltoides George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, just N of Signal Mtn., south of Hwy 98 31 Comment
  UCR50964  Eschscholzia parishii George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50965  Plantago ovata George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, just N of Signal Mtn., south of Hwy 98 31 Comment
  UCR50966  Langloisia setosissima George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50967  Lotus tomentellus George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50968  Lupinus arizonicus George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50969  Abronia villosa George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, just N of Signal Mtn., south of Hwy 98 31 Comment
  UCR50970  Camissonia cardiophylla George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50971  Aristida adscensionis George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, just N of Signal Mtn., south of Hwy 98 31 Comment
  UCR50972  Lepidium lasiocarpum George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50973  Euphorbia pediculifera George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50974  Fagonia laevis George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50975  Fagonia pachyacantha George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50976  Chaenactis stevioides George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50977  Chaenactis stevioides George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, just N of Signal Mtn., south of Hwy 98 31 Comment
  UCR50978  Bebbia juncea George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50979  Chorizanthe rigida George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50980  Calycoseris wrightii George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50981  Palafoxia linearis George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, just N of Signal Mtn., south of Hwy 98 31 Comment
  UCR50982  Encelia frutescens George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR59722  Croton californicus var. mohavensis George K. Helmkamp 1989-9-17 s.n. Imperial Sonoran (Colorado) Desert, Colorado River Valley; 0.5 mi west of Palo Verde at 4th Street 72 Comment
  UCR59723  Ditaxis neomexicana George K. Helmkamp 1989-9-17 s.n. Imperial Sonoran (Colorado) Desert, Colorado River Valley; 0.5 mi west of Palo Verde at 4th Street 72 Comment
  UCR59724  Hyptis emoryi George K. Helmkamp 1989-9-17 s.n. Imperial Sonoran (Colorado) Desert, Beside Indian Pass Rd, 7.2 mi NE of Ogilby Rd (S34). 220 Comment
  UCR59777  Ditaxis lanceolata George K. Helmkamp 1989-9-17 s.n. Imperial Sonoran (Colorado) Desert, Beside Indian Pass Rd, 7.2 mi NE of Ogilby Rd (S34). 220 Comment
  UCR59817  Bouteloua barbata George K. Helmkamp 1989-9-17 s.n. Imperial Sonoran (Colorado) Desert, Colorado River Valley; 0.5 mi west of Palo Verde at 4th Street 72 Comment
  UCR59843  Cressa truxillensis var. vallicola George K. Helmkamp 1989-9-17 s.n. Imperial Sonoran (Colorado) Desert, Colorado River Valley; 0.5 mi west of Palo Verde at 4th Street 72 Comment
  UCR59848  Hilaria rigida George K. Helmkamp 1989-9-17 s.n. Imperial Sonoran (Colorado) Desert, Colorado River Valley; 0.5 mi west of Palo Verde at 4th Street 72 Comment
  UCR59849  Eriochloa acuminata George K. Helmkamp 1989-9-17 s.n. Imperial Sonoran (Colorado) Desert, Colorado River Valley; 0.5 mi west of Palo Verde at 4th Street 72 Comment
  UCR59855  Psathyrotes ramosissima George K. Helmkamp 1989-9-17 s.n. Imperial Sonoran (Colorado) Desert, 5.2 mi east of State Hwy 78 and 7 mi south of Palo Verde. 'Cibola Nat'l Wildlife Reserve 75 Comment
  UCR59856  Hoffmannseggia glauca George K. Helmkamp 1989-9-17 s.n. Imperial Sonoran (Colorado) Desert, Colorado River Valley; 0.5 mi west of Palo Verde at 4th Street 72 Comment
  UCR63902  Eclipta prostrata George K. Helmkamp 1989-9-17 s.n. Imperial Sonoran (Colorado) Desert, Beside Indian Pass Rd, 7.2 mi NE of Ogilby Rd (S34). 220 Comment
  UCR71846  Bacopa monnieri George K. Helmkamp 1992-4-7 92 2 Imperial Sonoran (Colorado) Desert, Colorado River 0.5 mi downstream from Gilmore's Camp (about 1.5 mi south of Walter's Camp where the old channel meets the main river) 100 Comment
  UCR79503  Cyperus odoratus George K. Helmkamp 1993-11-4 X 11 Imperial Sonoran (Colorado) Desert, Boat dock at edge of the old bed of the Colorado River, 0.25 mi south of Walter's Camp (30 mi by road south of Blythe) 91 Comment
  UCR79505  Symphyotrichum subulatum George K. Helmkamp 1993-11-4 X- 12 Imperial Sonoran (Colorado) Desert, Edge of the old bed of the Colorado River, 0.25 mile north of Walter's Camp, 30 miles by road south of Blythe 91 Comment
  UCR79506  Eclipta prostrata George K. Helmkamp 1993-11-4 X 13 Imperial Sonoran (Colorado) Desert, Boat dock at edge of the old bed of the Colorado River, 0.25 mi south of Walter's Camp (30 mi by road south of Blythe) 91 Comment
  UCR79507  Polygonum persicaria George K. Helmkamp 1993-11-4 X 10 Imperial Sonoran (Colorado) Desert, Edge of the old bed of the Colorado River, 0.25 mile north of Walter's Camp, 30 miles by road south of Blythe 91 Comment
  UCR91946  Psathyrotes ramosissima George K. Helmkamp 1996-3-11 1004 Imperial Sonoran (Colorado) Desert, Edge of Walter's Camp Road, 3/4 mi west of the Colorado River 79 Comment
  UCR91960  Phragmites australis George K. Helmkamp 1996-1-23 996 Imperial Sonoran (Colorado) Desert, Imperial Valley; south edge of Wister Wildlife Area -63 Comment
  VVC946  Tiquilia palmeri G. K. Helmkamp 1998-3-18 2907 Imperial 7 mi. N of Winterhaven on Picacho Rd & 1.7 mi. E on powerline rd. 198 Comment
  RSA0012627  Senecio mohavensis George K. Helmkamp 1988-2-28 33 Imperial At end of dirt road ca. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98. [10 km cell; PG-1N, 0E] 152 Comment



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