Displaying 1 - 75 out of 167 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Abies lasiocarpa (Hook.) Nutt. | M. E. Barkworth 91.0 [1993] | 18 Jul 1993 | United States of America | Utah | Rich Co. Cache National Forest;… | — |
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| Acer macrophyllum Pursh | M. E. Barkworth 3446 | 16 Jul 1981 | United States of America | California | Nevada Co. 5.6 mi west… | — |
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| Acer pseudoplatanus L. | M. E. Barkworth 97.58 | 23 Aug 1997 | United States of America | Utah | Cache Co. SW portion of… | — |
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| Achnatherum aridum (M.E.Jones) Barkworth | M. E. Barkworth 4554 | 15 Jun 1985 | United States of America | Utah | Juab Co. 35.7 mi west… | — |
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| Achnatherum eminens (Cav.) Barkworth | M. E. Barkworth 5132 | 19 Sep 1988 | Mexico | — | On road to Rancho Los… | — |
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| Achnatherum hymenoides (Roem. & Schult.) Barkworth | M. E. Barkworth 4569 | 15 Jun 1985 | United States of America | Utah | Millard Co. 0.7 mi west… | — |
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| Achnatherum hymenoides (Roem. & Schult.) Barkworth | M. E. Barkworth 3337 | 13 Jun 1981 | United States of America | Utah | Uintah Co. Red Ash road,… | — |
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| Achnatherum lemmonii (Vasey) Barkworth | M. E. Barkworth 94144 | 17 Aug 1994 | United States of America | Idaho | Valley Co. Boise National Forest;… | — |
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| Achnatherum lettermanii (Vasey) Barkworth | M. E. Barkworth 5090 | 28 Aug 1988 | United States of America | Utah | Wasatch Co. Uinta National Forest;… | — |
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| Achnatherum lettermanii (Vasey) Barkworth | M. E. Barkworth 4328 | 06 Sep 1983 | United States of America | Utah | Cache Co. Slope west of… | — |
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| Achnatherum occidentale (Thurb. ex S.Watson) Barkworth | M. E. Barkworth 3417 | 15 Jul 1981 | United States of America | California | Nevada Co. Trailer park 1… | — |
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| Achnatherum occidentale (Thurb. ex S.Watson) Barkworth | M. E. Barkworth 3423-4 | 15 Jul 1981 | United States of America | California | Nevada Co. Intersection of U.S.… | — |
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| Achnatherum occidentale (Thurb. ex S.Watson) Barkworth | M. E. Barkworth 3460-2 | 17 Jul 1981 | United States of America | California | Mono Co. Buckeye campsite (U.S.F.S.)… | — |
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| Achnatherum occidentale (Thurb. ex S.Watson) Barkworth | M. E. Barkworth 4098 | 30 Aug 1982 | United States of America | California | Shasta Co. Highway 44, North… | — |
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| Achnatherum perplexum Hoge & Barkworth | M. E. Barkworth 4764 | 08 Sep 1985 | United States of America | New Mexico | Bernalillo Co. Cibola NF.; 1.5… | — |
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| Achnatherum perplexum Hoge & Barkworth | M. E. Barkworth 4620 | 27 Aug 1985 | United States of America | Utah | Garfield Co. On Utah 12,… | — |
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| Achnatherum scribneri (Vasey) Barkworth | M. E. Barkworth 4769 | 09 Sep 1985 | United States of America | Colorado | Chaffee Co. 4 mi. north… | — |
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| Achnatherum stillmanii (Bol.) Barkworth | M. E. Barkworth 3450 | 18 Jul 1981 | United States of America | California | Nevada Co. Across Ca 120… | — |
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| Agropyron desertorum (Fisch. ex Link) Schult. | M. E. Barkworth 4299 | 21 Jul 1983 | United States of America | Wyoming | Lincoln Co. Kemmerer Coal Mine,… | — |
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| Agrostis capillaris L. | M. E. Barkworth 516 | 19 Jul 1972 | Canada | British Columbia | 8 mi north of Horseshoe… | — |
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| Agrostis perennans (Walter) Tuck. | M. E. Barkworth 515 | 19 Jul 1972 | Canada | British Columbia | 8 mi north of Horseshoe… | — |
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| Agrostis stolonifera L. | M. E. Barkworth 196.0 | 12 Sep 1993 | United States of America | Utah | Rich Co. Southwest end of… | — |
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| Amelanchier alnifolia var. cusickii (Fernald) C.L.Hitchc. | M. E. Barkworth 2607 | 15 Jun 1980 | United States of America | Utah | Cache Co. East of Dugway… | — |
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| Anaphalis margaritacea (L.) Benth. & Hook.f. | M. E. Barkworth 2749 | 31 Aug 1980 | United States of America | Colorado | Grand Co. 8.3 mi SE… | — |
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| Arabis divaricarpa A.Nelson | M. E. Barkworth 2633 | 13 Jun 1980 | United States of America | Utah | Cache Co. Between Turner Campground… | — |
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| Arrhenatherum elatius (L.) P.Beauv. ex J.Presl & C.Presl | M. E. Barkworth 431 | 01 Jul 1972 | United States of America | Washington | Garfield Co. Beside Tucannon River;… | — |
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| Astragalus beckwithii Torr. & A.Gray var. beckwithii | M. E. Barkworth 2567 | 01 Jun 1980 | United States of America | Utah | Box Elder Co. 9 miles… | — |
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| Astragalus lentiginosus var. araneosus (E.Sheld.) Barneby | M. E. Barkworth 2580 | 02 Jun 1980 | United States of America | Utah | Box Elder Co. 17 miles… | — |
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| Astragalus lentiginosus var. fremontii (A.Gray ex Torr.) S.Watson | M. E. Barkworth 2528 | 10 May 1980 | United States of America | Utah | Washington Co. 1 mile south… | — |
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| Astragalus miser var. serotinus (A.Gray ex Cooper) Barneby | M. E. Barkworth 715 | 23 May 1973 | United States of America | Washington | Okanogan Co. Just north of… | — |
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| Astragalus mollissimus var. thompsonae (S.Watson) Barneby | M. E. Barkworth 2646 | 04 Jun 1980 | United States of America | Utah | Emery Co. Horse Canyon turnoff… | — |
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| Astragalus szovitsii Fisch. & C.A.Mey. | M. E. Barkworth s.n. | 26 Jun 2003 | Armenia | Ararat | Ararat district, between vilages Eraskh… | — |
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| Astragalus toanus M.E.Jones | M. E. Barkworth 2574 | 02 Jun 1980 | United States of America | Utah | Box Elder Co. 10 miles… | — |
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| Astragalus wingatanus S.Watson | M. E. Barkworth 2645 | 04 Jun 1980 | United States of America | Utah | Emery Co. Horse Canyon turnoff… | — |
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| Atriplex canescens (Pursh) Nutt. | M. E. Barkworth 2561 | 01 Jun 1980 | United States of America | Utah | Box Elder Co. 9 miles… | — |
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| Atriplex confertifolia (Torr. & Frém.) S.Watson | M. E. Barkworth 2657 | 05 Jun 1980 | United States of America | Utah | Emery Co. 28 miles north… | — |
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| Atriplex corrugata S.Watson | M. E. Barkworth 2661 | 05 Jun 1980 | United States of America | Utah | Grand Co. 13 miles east… | — |
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| Baileya multiradiata Harv. & A.Gray | M. E. Barkworth 2492 | 09 May 1980 | United States of America | Utah | Washington Co. Viewpoint off Highway… | — |
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| Balsamorhiza macrophylla Nutt. | M. E. Barkworth 2552 | 16 May 1980 | United States of America | Utah | Cache Co. 1.4 miles W… | — |
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| Barbula brachyphylla Sull. | M. E. Barkworth 690 | 07 Apr 1973 | United States of America | Washington | Whitman Co. Steptoe Canyon Road | — | ||||
| Blepharidachne kingii (S.Watson) Hack. | M. E. Barkworth 2594 | 02 Jun 1980 | United States of America | Utah | Box Elder Co. 22 miles… | — |
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| Bouteloua curtipendula (Michx.) Torr. | M. E. Barkworth 5157 | 23 Sep 1988 | United States of America | Texas | Jeff Davis Co. on highway… | — |
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| Bryum capillare Hedw. | M. E. Barkworth 630 | 24 Dec 1972 | Canada | — | — | |||||
| Bryum pseudotriquetrum (Hedw.) G.Gaertn., B.Mey. & Scherb. | M. E. Barkworth 678 | 15 Mar 1973 | United States of America | Washington | Skamania Co. Ca 1 mi… | — | ||||
| Camassia quamash (Pursh) Greene subsp. quamash | M. E. Barkworth 765 | 09 Jun 1973 | United States of America | Idaho | Idaho Co. 1 mi east… | — |
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| Camissonia subacaulis (Pursh) P.H.Raven | M. E. Barkworth 2610 | 13 Jun 1980 | United States of America | Utah | Cache Co. Between Turner Campground… | — |
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| Carex lupulina Muhl. ex Willd. | M. E. Barkworth 934 | 01 Sep 1975 | Canada | Ontario | Carleton Co. East of North… | — |
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| Carex lupulina Muhl. ex Willd. | M. E. Barkworth 934 | 01 Sep 1975 | Canada | Ontario | Carleton Co. East of North… | — |
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| Cercocarpus ledifolius Nutt. var. ledifolius | M. E. Barkworth 880[1993] | 17 Jul 1993 | United States of America | Utah | Cache Co. Cache National Forest;… | — |
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| Cercocarpus montanus Raf. | M. E. Barkworth 310 | 04 Jul 1993 | United States of America | Utah | Wasatch Co. Wasatch National Forest;… | — |
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| Chaenactis douglasii var. achilleifolia (Hook. & Arn.) A.Nelson | M. E. Barkworth 2565 | 01 Jun 1980 | United States of America | Utah | Box Elder Co. 9 miles… | — |
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| Chiloscyphus polyanthos (L.) Corda | M. E. Barkworth 98.035 | 15 Jul 1998 | United States of America | Utah | Cache Co. Cache National Forest;… | — | ||||
| Clematis ligusticifolia Nutt. | M. E. Barkworth 535 | 29 Aug 1972 | United States of America | Idaho | Nez Perce Co. 1 mi… | — |
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| Climacium dendroides (Hedw.) F.Weber & D.Mohr | M. E. Barkworth 726 | 23 May 1973 | United States of America | Washington | Whatcom Co. 11 mi west… | — | ||||
| Crepis acuminata Nutt. | M. E. Barkworth 2377 | 03 Jun 1979 | United States of America | Utah | Cache Co. Green Canyon @… | — |
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| Crepis modocensis Greene | M. E. Barkworth 2713 | 26 Jun 1980 | United States of America | Utah | Cache Co. Ridge above Preston… | — |
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| Croton californicus Müll.Arg. | M. E. Barkworth 2553 | 10 May 1980 | United States of America | Utah | Washington Co. 2 miles south… | — |
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| Cryptantha circumscissa (Hook. & Arn.) I.M.Johnst. | M. E. Barkworth 2563 | 01 Jun 1980 | United States of America | Utah | Box Elder Co. Park Valley… | — |
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| Cryptantha humilis (Greene) Payson | M. E. Barkworth 2562 | 01 Jun 1980 | United States of America | Utah | Box Elder Co. 9 miles… | — |
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| Cryptantha pterocarya (Torr.) Greene var. pterocarya | M. E. Barkworth 2584 | 02 Jun 1980 | United States of America | Utah | Box Elder Co. 17 miles… | — |
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| Cryptantha recurvata Coville | M. E. Barkworth 2597 | 02 Jun 1980 | United States of America | Utah | Box Elder Co. 22 miles… | — |
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| Danthonia intermedia Vasey | M. E. Barkworth 94.140 | 17 1994 [month not on label] | United States of America | Idaho | Valley Co. Boise National Forest;… | — |
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| Dendrolycopodium obscurum (L.) A.Haines | M. E. Barkworth 2149 | 04 Jul 1977 | Canada | Ontario | South River: 3 miles north… | — |
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| Deschampsia elongata (Hook.) Munro | M. E. Barkworth 436 | 01 Jul 1972 | United States of America | Washington | Garfield Co. Tucannon River | — |
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| Dicranum scoparium Hedw. | M. E. Barkworth 629 | 24 Dec 1972 | Canada | British Columbia | West Vancouver: 4329 Erwin Rd.,… | — | ||||
| Draba maguirei C.L.Hitchc. var. maguirei | M. E. Barkworth 9910 | 19 May 1999 | United States of America | Utah | Cache Co. Cache National Forest;… | — |
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| Elymus elymoides (Raf.) Swezey | M. E. Barkworth 3343 | 13 Jun 1981 | United States of America | Utah | Uintah Co. 7.9 miles N… | — |
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| Elymus elymoides (Raf.) Swezey | M. E. Barkworth 3349 | — | United States of America | Utah | Uintah Co. 1.4 miles n… | — |
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| Elymus elymoides subsp. californicus (J.G.Sm.) Barkworth | M. E. Barkworth 3466 | 18 Jul 1981 | United States of America | California | Mono Co. Ca. 5 mi… | — |
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| Elymus lanceolatus subsp. lanceolatus | M. E. Barkworth 3291 | 12 Jun 1981 | United States of America | Wyoming | Sweetwater Co. Along dirt road… | — |
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| Elymus repens (L.) Gould | M. E. Barkworth 4290 | 21 Jul 1983 | United States of America | Wyoming | Lincoln Co. Kemmerer Coal Mine,… | — |
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| Elymus trachycaulus (Link) Gould ex Shinners | M. E. Barkworth 94.141 | 17 Aug 1994 | United States of America | Idaho | Valley Co. Boise National Forest;… | — |
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| Elymus trachycaulus subsp. trachycaulus | M. E. Barkworth 3336 | 13 Jun 1981 | United States of America | Utah | Uintah Co. Red Ash road,… | — |
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| Encalypta rhaptocarpa Schwägr. | M. E. Barkworth 652 | 24 Jan 1973 | United States of America | Washington | Whitman Co. Tn 12N, R45E,… | — | ||||
| Enceliopsis nudicaulis var. nudicaulis | M. E. Barkworth 2592 | 02 Jun 1980 | United States of America | Utah | Box Elder Co. 18 miles… | — |
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