Displaying 1 - 75 out of 319 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Abronia glabrifolia Standl. | S. L. Welsh 22755 | 14 May 1984 | United States of America | Colorado | Mesa Co. Ca 4 miles… | — |
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| Abronia glabrifolia Standl. | S. L. Welsh 23403 | 12 May 1985 | United States of America | Colorado | Mesa Co. Ca 5 miles… | — |
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| Acamptopappus shockleyi A.Gray | S. L. Welsh 21024 | 20 Apr 1982 | United States of America | Nevada | Clark Co. ca 4 mi… | — |
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| Acamptopappus sphaerocephalus (Harv. & A.Gray) A.Gray | S. L. Welsh 22089 | 27 May 1983 | United States of America | Utah | Kane Co. GCNRA, Lake Powell,… | — |
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| Acamptopappus sphaerocephalus (Harv. & A.Gray) A.Gray | S. L. Welsh 20392 | 01 May 1981 | United States of America | Utah | Washington Co. 7 mi W… | — |
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| Acamptopappus sphaerocephalus (Harv. & A.Gray) A.Gray | S. L. Welsh 22066 | 26 May 1983 | United States of America | Arizona | Coconino Co. GCNRA, Glen Cyn,… | — |
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| Achnatherum aridum (M.E.Jones) Barkworth | S. L. Welsh 27022 | 16 Jun 1998 | United States of America | Utah | Kane Co. Coyote Canyon, Coyote… | — |
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| Achnatherum aridum (M.E.Jones) Barkworth | S. L. Welsh 23728 | 05 May 1986 | United States of America | Utah | Washington Co. Bulldog Knolls, Beaver… | — |
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| Achnatherum aridum (M.E.Jones) Barkworth | S. L. Welsh 28029 | 27 May 2001 | United States of America | Utah | Kane Co. Petrified Hollow Wash,… | — |
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| Achnatherum coronatum (Thurb.) Barkworth | S. L. Welsh 28028 | 27 May 2001 | United States of America | Utah | Kane Co. Petrified Hollow Wash,… | — |
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| Achnatherum hymenoides (Roem. & Schult.) Barkworth | S. L. Welsh 13603 | 28 Jun 1976 | United States of America | Utah | Garfield Co. Red Canyon. Ponderosa… | — |
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| Achnatherum hymenoides (Roem. & Schult.) Barkworth | S. L. Welsh 24658 | 03 May 1991 | United States of America | Nevada | Lincoln Co. Road beyond Snow… | — |
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| Achnatherum hymenoides (Roem. & Schult.) Barkworth | S. L. Welsh 25060 | 29 May 1992 | United States of America | Utah | Kane Co. Cockscomb summit, ca… | — |
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| Achnatherum hymenoides (Roem. & Schult.) Barkworth | S. L. Welsh 23836 | 10 Jul 1987 | United States of America | Utah | Washington Co. Lava Point vicinity. | — |
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| Achnatherum hymenoides (Roem. & Schult.) Barkworth | S. L. Welsh 25671 | 21 Jun 1993 | United States of America | Utah | Tooele Co. Tooele Army Depot,… | — |
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| Achnatherum hymenoides (Roem. & Schult.) Barkworth | S. L. Welsh 26136 | 26 Jul 1955 | United States of America | Utah | Iron Co. Claron Botanical Area,… | — |
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| Achnatherum lemmonii (Vasey) Barkworth | S. L. Welsh 5117 | 02 Sep 1965 | United States of America | Utah | Utah Co. Payson Lakes vicinity,… | — |
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| Achnatherum lemmonii (Vasey) Barkworth | S. L. Welsh 6567 | 11 Aug 1967 | United States of America | Utah | Carbon Co. West Tavaputs Plateau,… | — |
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| Achnatherum x bloomeri (Bol.) Barkworth | S. L. Welsh 25061 | 29 May 1992 | United States of America | Utah | Kane Co. Cockscomb summit, ca… | — |
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| Achnatherum x bloomeri (Bol.) Barkworth | S. L. Welsh 25061 | 29 May 1992 | United States of America | Utah | Kane Co. Cockscomb summit, ca… | — |
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| Achnatherum x bloomeri (Bol.) Barkworth | S. L. Welsh 26736 | 23 Apr 1997 | United States of America | Utah | Washington Co. Mesa Verde Group.… | — |
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| Agoseris aurantiaca var. purpurea (A.Gray) Cronquist | S. L. Welsh 9368 | 01 Aug 1969 | United States of America | Colorado | Grand Co. Sagebrush-grass community, ca… | — |
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| Agoseris glauca (Pursh) Raf. var. glauca | S. L. Welsh 6670 | 01 Sep 1967 | United States of America | Utah | Summit Co. Ca. 3.5 miles… | — |
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| Agoseris parviflora (Nutt.) D.Dietr. | S. L. Welsh 20412 | 08 May 1981 | United States of America | Utah | Carbon Co. | — |
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| Agoseris parviflora (Nutt.) D.Dietr. | S. L. Welsh 20510 | 22 May 1981 | United States of America | Utah | Beaver Co. Wah Wah Mts.,… | — |
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| Agoseris retrorsa (Benth.) Greene | S. L. Welsh 5257 | 03 May 1966 | United States of America | Utah | Washington Co. Mountain Meadows | — |
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| Agropyron desertorum (Fisch. ex Link) Schult. | S. L. Welsh 2464 | 14 Aug 1963 | United States of America | Utah | San Juan Co. Between Kachina… | — |
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| Agrostis exarata Trin. | S. L. Welsh 2444 | 14 Aug 1963 | United States of America | Utah | San Juan Co. Between Kachina… | — |
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| Agrostis exarata Trin. | S. L. Welsh 23828 | 09 Jul 1987 | United States of America | Utah | Washington Co. ZNP, Zion Narrows… | — |
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| Agrostis hyemalis (Walter) Britton, Sterns & Poggenb. | S. L. Welsh 20101 | 17 Aug 1980 | United States of America | Alaska | Vicinity of Delta Jct. | — |
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| Agrostis perennans (Walter) Tuck. | S. L. Welsh 4820 | 21 Jul 1965 | United States of America | Alaska | Kantishna, ca. 86 miles west… | — |
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| Agrostis scabra Willd. | S. L. Welsh 24176a | 25 Sep 1992 | United States of America | Utah | Kane Co. The Barracks, Parunuweap… | — |
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| Agrostis scabra Willd. | S. L. Welsh 4383 | 25 Jun 1965 | United States of America | Alaska | Manley Hot Springs. | — |
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| Agrostis stolonifera L. | S. L. Welsh 28651 | 27 Aug 2002 | United States of America | Utah | Garfield Co. Calf Creek Campground | — |
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| Agrostis stolonifera L. | S. L. Welsh 2295 | 03 Aug 1963 | United States of America | Utah | Grand Co. Northwest of Turnbow… | — |
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| Agrostis stolonifera L. | S. L. Welsh 27806 | 29 Aug 2000 | United States of America | Utah | Garfield Co. Junction of Upper… | — |
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| Agrostis stolonifera L. | S. L. Welsh 27242 | 30 Jun 2001 | United States of America | Utah | Garfield Co. The Gulch, Burr… | — |
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| Agrostis stolonifera L. | S. L. Welsh 2210 | 21 Jul 1963 | United States of America | Colorado | Montezuma Co. Headquarters area, Mesa… | — |
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| Agrostis variabilis Rydb. | S. L. Welsh 19957 | 02 Aug 1980 | United States of America | Utah | Duchesne Co. Uintah Mts, Timothy… | — |
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| Agrostis variabilis Rydb. | S. L. Welsh 19792 | 25 Jul 1980 | United States of America | Utah | Duchesne Co. Uinta Mtns, Brown… | — |
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| Aliciella stenothyrsa (A.Gray) J.M.Porter | S. L. Welsh 10772 | 31 Aug 1970 | United States of America | Utah | Emery Co. Summit of Cedar… | — |
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| Aliciella subnuda (Torr. ex A.Gray) J.M.Porter | S. L. Welsh 21184 | 02 Jun 1982 | United States of America | Utah | Garfield Co. Cedar Mesa Canyon | — |
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| Allium macropetalum Rydb. | S. L. Welsh 23404 | 12 May 1985 | United States of America | Colorado | Mesa Co. Ca 5 mi… | — |
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| Allium macropetalum Rydb. | S. L. Welsh 22746 | 14 May 1984 | United States of America | Colorado | Mesa Co. Ca 4 mi… | — |
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| Alopecurus magellanicus Lam. | S. L. Welsh 10315 | 08 Jul 1970 | Canada | Yukon | Delta of Blow River, between… | — |
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| Alopecurus magellanicus Lam. | S. L. Welsh 5698 | 07 Jul 1966 | United States of America | Alaska | Point Barrow. | — |
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| Amsonia jonesii Woodson | E. J. Neese | S. L. Welsh | S. L. Welsh 7245 | 17 May 1979 | United States of America | Utah | Uintah Co. Ca. 9 miles… | — |
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| Andromeda polifolia L. | S. L. Welsh 4133 | 15 Jun 1965 | United States of America | Alaska | Anchorage Borough. | — |
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| Andropogon | S. L. Welsh 2376 | 12 Aug 1963 | United States of America | Utah | San Juan Co. Tuwa Canyon;… | — |
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| Andropogon glomeratus var. glomeratus | S. L. Welsh 22042 | 13 May 1983 | United States of America | Utah | San Juan Co. Lake Powell… | — |
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| Andropogon ternarius Michx. | S. L. Welsh 12613 | 15 Sep 1974 | United States of America | Arkansas | Johnson Co. Opening in oak… | — |
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| Antennaria alpina (L.) Gaertn. | S. L. Welsh 4775 | 20 July, 1965 | United States of America | Alaska | Denali Highway, ca. 12.6 miles… | — |
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| Antennaria corymbosa E.E.Nelson | S. L. Welsh 6661 | 01 Sep 1967 | United States of America | Utah | Summit Co. In Bald Mountain… | — |
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| Antennaria corymbosa E.E.Nelson | S. L. Welsh 19763 | 25 July 1980 | United States of America | Utah | Duchesne Co. Uinta Mtns, Brown… | — |
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| Antennaria corymbosa E.E.Nelson | S. L. Welsh 19927 | 02 Aug 1980 | United States of America | Utah | Duchesne Co. Uinta Mountains, Yellowstone… | — |
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| Antennaria dimorpha (Nutt.) Torr. & A.Gray | S. L. Welsh 5241 | 03 May 1966 | United States of America | Utah | Washington Co. Mountain Meadows | — |
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| Antennaria marginata Greene | S. L. Welsh 2094 | 9 June 1963 | United States of America | Colorado | Montezuma Co. Headquarters area, Mesa… | — |
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| Anthoxanthum arcticum Veldkamp | S. L. Welsh 20837 | 07 Aug 1981 | United States of America | Alaska | Prudhoe Bay, Maritime tundra, polygonal… | — |
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| Anthoxanthum monticola (Bigelow) Veldkamp | S. L. Welsh 5581 | 26 Jun 1966 | Canada | Yukon | Sixty-mile Road, mile 12. Gravelly… | — |
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| Anthoxanthum monticola (Bigelow) Veldkamp | S. L. Welsh 4770 | 20 Jul 1965 | United States of America | Alaska | Denali Highway, ca. 12.6 miles… | — |
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| Anthoxanthum monticola (Bigelow) Veldkamp | S. L. Welsh 10553 | 12 Jul 1970 | Canada | Yukon | — |
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| Arabis selbyi Rydb. | S. L. Welsh 2124 | 09 Jun 1963 | United States of America | Colorado | Montezuma Co. Pine Canyon, south… | — |
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| Aralia bicrenata Wooton & Standl. | S. L. Welsh 23829 | 09 Jul 1987 | United States of America | Utah | Washington Co. ZNP, Zion Narrows… | — |
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| Arceuthobium divaricatum Engelm. | S. L. Welsh 2186 | 12 Jun 1963 | United States of America | Colorado | Montezuma Co. South end, Wetherill… | — |
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| Arctagrostis latifolia subsp. arundinacea (Trin.) Tzvelev | S. L. Welsh 4880 | 23 Jul 1965 | United States of America | Alaska | Tangle River, ca. 22 miles… | — |
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| Arctagrostis latifolia subsp. latifolia | S. L. Welsh 12286 | 30 Jun 1973 | Canada | Yukon | Stream bar, along a tributary… | — |
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| Arctagrostis latifolia subsp. latifolia | S. L. Welsh 10733 | 15 Jul 1970 | Canada | Yukon | Gravel bar along Blow River,… | — |
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| Arctagrostis latifolia subsp. latifolia | S. L. Welsh 10589 | 12 Jul 1970 | Canada | Yukon | Gravel bar, in Black Fox… | — |
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| Arctagrostis latifolia subsp. latifolia | S. L. Welsh 10648 | 14 Jul 1970 | Canada | Yukon | Lake shore, ca 16 mi… | — |
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| Arctagrostis latifolia subsp. latifolia | S. L. Welsh 5090 | 03 Aug 1965 | United States of America | Alaska | Ca. 20 miles east of… | — |
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| Arctagrostis latifolia subsp. latifolia | S. L. Welsh 4464 | 14 Jul 1965 | United States of America | Alaska | Along Wolverine Creek, ca. 5… | — |
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| Arctagrostis latifolia subsp. latifolia | S. L. Welsh 4822 | 21 Jul 1965 | United States of America | Alaska | Kantishna, ca. 86 miles west… | — |
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| Arctagrostis latifolia subsp. latifolia | S. L. Welsh 4617 | 12 Jul 1965 | United States of America | Alaska | Eklutna Lake. | — |
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| Aristida purpurea var. fendleriana (Steud.) Vasey | S. L. Welsh 2387 | 12 Aug 1963 | United States of America | Utah | San Juan Co. Tuwa Canyon;… | — |
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| Aristida purpurea var. fendleriana (Steud.) Vasey | S. L. Welsh 2178 | 12 Jun 1963 | United States of America | Colorado | Montezuma Co. Pool Canyon, south… | — |
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