Search Results — 119 specimen records retrieved (114 records with coordinates)
Results for search: County=IMPERIAL; Source=All; Collector=Roos;   

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 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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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CLARK-A1528-1003  Hymenoxys odorata John C. Roos 1949-4-8 4199 Imperial 60 Comment
  CLARK-A1528-1006  Hymenoxys odorata John C. Roos 1949-4-8 4199 Imperial 60 Comment
  CLARK-A1528-1013  Machaeranthera tephrodes John C. Roos 1949-4-7 4175 Imperial Winterhaven 39 Comment
  CLARK-A1528-1069  Trixis californica John C. Roos 1937-6-10 1510 Imperial Mountain Springs 670 Comment
  CLARK-A1528-1199  Ephedra trifurca John C. Roos 1949-4-7 4159 Imperial Niland Comment
  CLARK-A1528-1325  Teucrium cubense subsp. depressum John C. Roos 1949-4-8 4201 Imperial Palo Verde 60 Comment
  CLARK-A1528-1327  Salvia greatae John C. Roos 1949-4-6 Imperial Chocolate Mountains 91 Comment
  CLARK-A1528-1341  Parietaria floridana John C. Roos 1949-4-6 4152 Imperial Chocolate Mountains Comment
  CLARK-A1528-2059  Pluchea sericea John C. Roos 1947-3-1 3301 Imperial Fish Springs Comment
  CLARK-A1528-2154  Encelia farinosa John C. Roos 1949-4-6 Imperial Pope Comment
  CLARK-A1528-2201  Coldenia canescens var. pulchella John C. Roos 1949-4-7 4163 Imperial Chocolate Mountains Comment
  CLARK-A1528-2206  Coldenia palmeri John C. Roos 1937-6-10 2017 -A Imperial Coyote Wells Comment
  CLARK-A1528-2212  Cryptantha costata John C. Roos 1949-4-7 4158 Imperial Algodones Dunes Comment
  CLARK-A1528-2425  Lepidium fremontii John C. Roos 1949-4-6 Imperial Chocolate Mountains Comment
  CLARK-A1528-2514  Atriplex elegans subsp. fasciculata John C. Roos 1949-4-6 4141 Imperial Pope Hot Springs Comment
  CLARK-A1528-2543  Atriplex canescens John C. Roos 1949-4-6 4157 Imperial Frink Comment
  CLARK-A1528-2586  Monolepis nuttalliana John C. Roos 1949-4-8 4200 Imperial Palo Verde Valley Comment
  CLARK-A1528-2734  Astragalus crotalariae John C. Roos 1949-4-6 4156 Imperial Salton Sea Comment
  CLARK-A1528-2766  Dalea emoryi John C. Roos 1963-6-1 Imperial 54 Comment
  CLARK-A1528-2774  Dalea spinosa John C. Roos 1937-6-10 2016 Imperial Coyote Wells Comment
  CLARK-A1528-2776  Dalea spinosa John C. Roos 1959-6-11 Imperial Coyote Wells Comment
  CLARK-A1528-2778  Calliandra eriophylla John C. Roos 1949-4-7 4164 Imperial Chocolate Mountains Comment
  CLARK-A1528-3086  Nolina bigelovii John C. Roos 1937-6-10 1478 Imperial Mountain Spring 701 Comment
  CLARK-A1528-3133  Teucrium depressum John C. Roos 1949-4-8 4201 Imperial Palo Verde Valley Comment
  CLARK-A1528-3404  Argemone munita John C. Roos 1949-4-7 4162 Imperial Salton Trough Comment
  CLARK-A1528-3841  Pilostyles thurberi John C. Roos 1963-6-1 Imperial Comment
  CLARK-A1528-3842  Pilostyles thurberi John C. Roos 1963-6-1 Imperial Comment
  CLARK-A1528-4081  Castela emoryi John C. Roos 1939-6-11 Imperial 91 Comment
  CLARK-A1528-4358  Physalis acutifolia John C. Roos 1937-6-9 1439 Imperial Westmorland Comment
  CLARK-A1528-4787  Panicum urvilleanum John C. Roos 1949-4-7 4177 Imperial Comment
  CLARK-A1528-4810  Phragmites australis John C. Roos 1947-3-1 3297 Imperial Fish Springs Comment
  CLARK-A1528-4936  Convolvulus arvensis John C. Roos 1937-6-9 1667 Imperial Comment
Read comments
May 15 2017
  CLARK-A1528-5026  Mirabilis froebelii John C. Roos 1937-6-7 1454 Imperial Coyote Wells Comment
  CLARK-A1528-5030  Eustoma exaltatum John C. Roos 1937-6-9 1451 Imperial Westmorland Comment
  CLARK-A1528-5143  Horsfordia newberryi John C. Roos 1949-4-6 4151 Imperial Chocolate Mountains 121 Comment
  CLARK-A1528-5163  Hymenoxys odorata John C. Roos 1949-4-8 4199 Imperial 60 Comment
  CLARK-A1528-5169  Hymenoxys odorata John C. Roos 1949-4-8 4199 Imperial 60 Comment
  CLARK-A1528-5170  Hymenoxys odorata John C. Roos 1949-4-8 4199 Imperial Palo Verde Valley 60 Comment
  CLARK-A1528-5197  Pilostyles thurberi John C. Roos 1963-6-1 Imperial Comment
  CLARK-A1528-5668  Euphorbia polycarpa var. parishii John C. Roos 1937-6-10 627 Imperial Plaster City Comment
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Jul 27 2018
  CLARK-A1528-5733  Castela emoryi John C. Roos 1939-6-11 Imperial 91 Comment
  CLARK-A1528-5745  Castela emoryi John C. Roos 1939-6-11 Imperial 91 Comment
  CLARK-A1528-7782  Sesuvium verrucosum John C. Roos 1949-4-8 4192 Imperial Palo Verde Comment
  CLARK-A1528-7805  Astragalus lentiginosus var. borreganus John C. Roos 1949-4-7 4166 Imperial Comment
  CLARK-A1528-7809  Phacelia minutiflora John C. Roos 1949-4-8 4193 Imperial Milpitas Wash Comment
  CLARK-A1528-7814  Amsinckia tessellata John C. Roos 1949-4-8 4191 Imperial Milpitas Wash Comment
  CLARK-A1528-7815  Amsinckia tessellata John C. Roos 1949-4-8 4191 Imperial Milpitas Wash Comment
  CLARK-A1528-7816  Amsinckia tessellata John C. Roos 1949-4-8 4191 Imperial Milpitas Wash Comment
  CLARK-A1528-7848  Mentzelia multiflora subsp. longiloba John C. Roos 1949-4-7 4161 Imperial Niland Comment
  CLARK-A1528-7849  Mentzelia multiflora subsp. longiloba John C. Roos 1949-4-7 4160 Imperial Niland Comment
  CLARK-A1528-7850  Mirabilis laevis var. villosa John C. Roos 1949-4-8 4182 Imperial Chocolate Mountains Comment
  CLARK-A1528-7862  Lepidium lasiocarpum John C. Roos 1949-4-8 4189 Imperial Chocolate Mountains Comment
  LA102318  Astragalus crotalariae John C. Roos; 1947-3-1 3305 Imperial Salton Sink, Fish Springs, NW side of the Salton Sea. -60 Comment
  LA102382  Helianthus niveus subsp. tephrodes John C. Roos; 1949-4-7 4168 Imperial sand hills W of Yuma Comment
  POM263138  Chamaesyce parishii J. C. Roos 1937-6-10 627 Imperial Plaster City Comment
  POM265640  Mirabilis tenuiloba J. C. Roos 1937-6-10 1447 Imperial Coyote Wells, western edge of Colorado Desert. Comment
Read comments
Oct 9 2010
  POM265684  Lotus haydonii J. C. Roos 1937-6-10 2019 Imperial Mountain Springs Comment
  POM301526  Convolvulus arvensis J. C. Roos 1937-6-9 1667 Imperial Brawley Comment
  RSA450765  Castela emoryi J. C. Roos 1959-6-11 s.n. Imperial Coyote Wells, 6 miles SE of Coyote Wells along Hwy 98 Comment
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Oct 9 2010
  RSA45514  Teucrium cubense subsp. depressum J. C. Roos 1949-4-8 4201 Imperial Edge of irrigated field, Palo Verde. Comment
  RSA45515  Monolepis nuttalliana J. C. Roos, L. Roos 1949-4-8 4200 Imperial South of Palo Verde. Comment
Read comments
Aug 28 2016
  RSA45516  Nama hispida var. spathulata J. C. Roos 1949-4-8 4197 Imperial Chocolate Mountains, along wash east end of mountains. Comment
  RSA45518  Phacelia minutiflora J. C. Roos 1949-4-8 4193 Imperial Milpitas Wash, at road from Midway Well to Palo Verde. Comment
  RSA45519  Sesuvium verrucosum J. C. Roos, Lucille Roos 1949-4-8 4192 Imperial Edge of irrigated field, Palo Verde. Comment
  RSA45520  Condalia globosa var. pubescens J. C. Roos 1949-4-8 4184 Imperial near Midway Well. Comment
  RSA45521  Mirabilis laevis var. villosa J. C. Roos, L. Roos 1949-4-8 4182 Imperial Chocolate Mountains, along wash east end of mountains. Comment
  RSA45522  Sphaeralcea emoryi J. C. Roos, L. Roos 1949-4-7 4174 Imperial near Winterhaven Comment
  RSA45523  Astragalus magdalenae var. peirsonii J. C. Roos 1949-4-7 4170 Imperial West of Yuma. Comment
  RSA45524  Astragalus lentiginosus var. borreganus J. C. Roos, Lucille Roos 1949-4-7 4166 Imperial West of Yuma Sand Dunes, near All American Canal. Comment
  RSA45527  Mentzelia longiloba var. longiloba J. C. Roos, L. Roos 1949-4-7 4160 Imperial Along All-America Canal, 35 miles SE of Niland. Comment
  RSA45528  Ephedra trifurca J. C. Roos, Lucille Roos 1949-4-7 4159 Imperial Sand dunes along All-America Canal; about 15 miles southeast of Niland. Comment
  RSA45529  Astragalus crotalariae J. C. Roos, Lucille Roos 1949-4-7 4156 Imperial Near Frink. Comment
  RSA45530  Horsfordia newberryi J. C. Roos 1949-4-6 4151 Imperial Chocolate Mountains north of Pope 122 Comment
Read comments
Oct 17 2014
  RSA659178  Eriogonum deserticola J. C. Roos 1947-4-7 4178 Imperial Sand dunes about 45 miles S.E. of Niland. Comment
  RSA659179  Lotus strigosus var. tomentellus J. C. Roos 1952-3-28 659179 Imperial Truck Haven along west side Salton Sea. 0 Comment
  RSA659180  Dalea mollissima J. C. Roos 1952-3-28 5427 Imperial Truck Haven along west side Salton Sea. 0 Comment
  RSA659471  Dalea mollis J. C. Roos 1952-3-28 5428 Imperial Truck Haven along west side Salton Sea. 0 Comment
  RSA659776  Atriplex canescens J. C. Roos 1949-4-6 4157 Imperial Near Frink. Comment
  RSA659792  Dalea spinosa J. C. Roos 1959-6-11 s.n. Imperial Coyote Wells. Comment
Read comments
Oct 9 2010
  RSA89981  Pholisma sonorae J. C. Roos 1949-4-7 4984 Imperial Between Yuma and Imperial Valley 61 Comment
  SBBG54105  Pilostyles thurberi J. C. Roos 1960-6-1 Imperial 0.6 mi SE of San Felipe wash bridge near Kane Spring -54 Comment
  SD88277  Salvia greatae John Roos, Lucille Roos 1949-4-6 4154 Imperial Document only. Mouth of rocky canyon, south foot Chocolate Mountains, north of Pope. 91 Comment
Read comments
Sep 13 2015
  SEINET3407734 Image available Dalea spinosa J. C. Roos 1959-6-11 Imperial Coyote Wells. Comment
  SEINET938119  Astragalus crotalariae J. C. Roos 1947-1 3305 Imperial In alkaline silt at Fish Springs, Salton Sink, north-west side of the Salton Sea. -61 Comment
  UCR18582  Hymenoxys odorata John C. Roos 1949-4-8 4201 Imperial Sonoran (Colorado) Desert, 4 or 5 mi. south of the Palo Verde Valley Comment
  UCR18746  Machaeranthera asteroides John C. Roos 1949-4-7 4175 Imperial Sonoran (Colorado) Desert, Lower Colorado River Valley, near Winterhaven 40 Comment
  UCR18760  Tiquilia canescens John C. Roos 1949-4-7 4163 Imperial Sonoran (Colorado) Desert, east end of Chocolate Mountains Comment
  UCR18892  Atriplex elegans John C. Roos, Lucille Roos 1949-4-6 4141 Imperial Sonoran (Colorado) Desert, Pope Hot Springs [=Hot Mineral Spa] -24 Comment
  UCR18907  Pilostyles thurberi John C. Roos 1963-6-1 s.n. Imperial Sonoran (Colorado) Desert, 0.6 mi. SE of San Felipe Wash bridge on Hwy 99 (=86), near Kane Spring -55 Comment
  UCR18984  Astragalus lentiginosus var. borreganus John C. Roos 1949-4-7 4166 Imperial Sonoran (Colorado) Desert, Sand flats west of Yuma sand dunes Comment
  UCR19211  Argemone munita John C. Roos 1949-4-7 4162 Imperial Sonoran (Colorado) Desert, 3 mi. north of Niland Comment
  UCR19227  Castela emoryi John C. Roos 1959-6-11 s.n. Imperial Coyote Wells, 6 mi. SE of Coyote wells along Hwy 98 Comment
  UCR19243  Parietaria hespera var. hespera John C. Roos, Lucille Roos 1949-4-6 4152 Imperial Sonoran (Colorado) Desert, Chocolate Mountains, north of Pope 122 Comment
  UCR20392  Lepidium lasiocarpum John C. Roos 1949-4-8 4189 Imperial Sonoran (Colorado) Desert, east end of Chocolate Mountains Comment
  UCR24073  Pluchea sericea John C. Roos 1947-3-1 3301 Imperial Sonoran (Colorado) Desert, Fish Springs, Salton Sink, on the W/ NW side of the Salton Sea. -61 Comment
  UCR24075  Phragmites australis John C. Roos 1947-3-1 3297 Imperial Sonoran (Colorado) Desert, Fish Springs, Salton Sink, on the W/ NW side of the Salton Sea. -61 Comment
  UCR25407  Cenchrus echinatus John C. Roos 1949-4-7 4173 Imperial Sonoran (Colorado) Desert, Lower Colorado River Valley, near Winterhaven 40 Comment
  UCR25916  Dalea mollissima John C. Roos 1952-3-28 5427 Imperial Sonoran (Colorado) Desert, Truckhaven [Salton City], W side of Salton Sea 0 Comment
  UCR25917  Lotus tomentellus John C. Roos 1952-3-28 5426 Imperial Sonoran (Colorado) Desert, Truckhaven [Salton City], W side of Salton Sea 0 Comment
  UCR25918  Dalea mollis John C. Roos 1952-3-28 5428 Imperial Sonoran (Colorado) Desert, Truckhaven [Salton City], W side of Salton Sea 0 Comment
  UCR25919  Astragalus crotalariae John C. Roos, Lucille Roos 1949-4-6 4156 Imperial Sonoran (Colorado) Desert, saline flats near Frink -55 Comment
  UCR25943  Atriplex canescens var. macilenta John C. Roos, Lucille Roos 1949-4-6 4157 Imperial Sonoran (Colorado) Desert, saline flats near Frink -55 Comment
  UCR25963  Cryptantha costata John C. Roos 1949-4-7 4158 Imperial Sonoran (Colorado) Desert, 40 mi SE of Niland Comment
  UCR25976  Streptanthella longirostris John C. Roos 1952-3-28 5424 Imperial Sonoran (Colorado) Desert, Truckhaven [Salton City], W side of Salton Sea 0 Comment
  UCR25981  Monolepis nuttalliana John C. Roos 1949-4-8 4200 Imperial Sonoran (Colorado) Desert, Colorado River Valley; alkali flats south of Palo Verde Comment
  UCR26169  Camissonia claviformis John C. Roos 1952-3-28 5425 Imperial Sonoran (Colorado) Desert, Truckhaven [Salton City], W side of Salton Sea 0 Comment
  UCR26302  Nama hispida John C. Roos 1949-4-8 4197 Imperial Sonoran (Colorado) Desert, Milpitas Wash. Comment
  UCR26303  Eriogonum deserticola John C. Roos 1949-4-7 4178 Imperial Sonoran (Colorado) Desert, 40 mi SE of Niland Comment
  UCR26316  Aristida adscensionis John C. Roos 1949-4-7 4176 Imperial Sonoran (Colorado) Desert, Lower Colorado River Valley, near Winterhaven 40 Comment
  UCR26332  Aristida purpurea var. parishii John C. Roos 1949-4-8 4198 Imperial Sonoran (Colorado) Desert, east end of Palo Verde Mtns. [Hwy 78 between Palo Verde and Milpitas Wash] Comment
  UCR30618  Astragalus crotalariae John C. Roos 1947-3-1 3305 Imperial Sonoran (Colorado) Desert, Fish Springs, Salton Sink, on the W/ NW side of the Salton Sea. -61 Comment
  UCR30823  Polygonum argyrocoleon John C. Roos 1937-6-9 2252 Imperial Sonoran (Colorado) Desert, Westmorland, Imperial Valley -43 Comment
  UCR30828  Nama hispida var. revoluta John C. Roos 1949-4-7 4172 Imperial Sonoran (Colorado) Desert, Hills 14 or 15 mi. west of Yuma. Comment
  UCSB45568  Aristida adscensionis Roos, John 1949-4-7 Imperial Flats near Winterhaven, lower Colorado River Valley 40 Comment
  RSA0021239  Camissonia brevipes subsp. arizonica J. C. Roos, Lucille Roos 1949-4-8 4195 Imperial Chocolate Mountains, along wash east end of mountains. Comment
  RSA0103353  Tiquilia canescens var. pulchella John C. Roos, Lucille Roos 1949-4-7 4163 Imperial East end Chocolate Mts. Comment
  RSA0126951  Mentzelia longiloba var. longiloba J. C. Roos, L. Roos 1949-4-7 4161 Imperial All America Canal, 5 miles SE of Niland Comment
  RSA658694  Monolepis nuttalliana J. C. Roos 1949-4-8 4200 Imperial South of Palo Verde. Comment
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Aug 28 2016
  RSA92342  Eriogonum insigne J. C. Roos, Lucille Roos 1952-6-28 6172 Imperial SE end Eureka Valley. 915 Comment
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Jun 4 2014



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