Displaying 1 - 50 out of 107 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Amsonia eastwoodiana Rydb. | N. H. Holmgren | P. K. Holmgren 11487 | 14 Jun 1991 | United States of America | Utah | San Juan Co. San Juan… | — |
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| Amsonia eastwoodiana Rydb. | N. H. Holmgren | P. K. Holmgren | R. C. Barneby 8786 | 27 May 1978 | United States of America | Utah | Emery Co. Sa Rafael Desert,… | — |
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| Amsonia jonesii Woodson | N. H. Holmgren | P. K. Holmgren 8470 | 21 Jun 1977 | United States of America | Utah | Washington Co. Wire Mesa, 4.8… | — |
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| Amsonia jonesii Woodson | N. H. Holmgren | P. K. Holmgren | R. Kern 9027 | 18 Jul 1978 | United States of America | Utah | Washington Co. Pine Valley Mounatins,… | — |
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| Amsonia jonesii Woodson | N. H. Holmgren | P. K. Holmgren 13226 | 23 Jun 1998 | United States of America | Utah | Duchesne Co. West Tavaputs Plateau,… | — |
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| Apocynum androsaemifolium L. | N. H. Holmgren | P. K. Holmgren 9060 | 28 Jul 1978 | United States of America | Utah | Utah Co. Mt. Timpanogos area,… | — |
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| Apocynum cannabinum L. | N. H. Holmgren | P. K. Holmgren 9579 | 08 Jul 1980 | United States of America | Nevada | Washoe Co. Granite Range, Rock… | — |
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| Apocynum cannabinum L. | N. H. Holmgren | P. K. Holmgren 11483 | 12 Jun 1991 | United States of America | Utah | San Juan Co. San Juan… | — |
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| Apocynum sibiricum Jacq. | N. H. Holmgren | P. K. Holmgren 9000 | 19 Jun 1978 | United States of America | Nevada | Lincoln Co. Rose Valley, along… | — |
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| Arcyria | P. K. Holmgren s.n. | s.d. | United States of America | Washington | King Co. near Durvall | — | ||||
| Asclepias asperula (Decne.) Woodson | N. H. Holmgren | P. K. Holmgren 4424 | 15 Jul 1970 | United States of America | Utah | Beaver Co. Wah Wah Mountains,… | — |
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| Asclepias asperula (Decne.) Woodson | N. H. Holmgren | P. K. Holmgren 3726 | 13 Jul 1969 | United States of America | Utah | Beaver Co. Wah Wah Mountains,… | — |
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| Asclepias cryptoceras S.Watson subsp. cryptoceras | N. H. Holmgren | P. K. Holmgren 13475 | 26 May 1999 | United States of America | Utah | Emery Co. San Rafael Swell,… | — |
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| Asclepias cryptoceras S.Watson subsp. cryptoceras | N. H. Holmgren | P. K. Holmgren 13228 | 23 Jun 1998 | United States of America | Utah | Emery Co. West Tavaputs Plateau… | — |
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| Asclepias cryptoceras S.Watson subsp. cryptoceras | N. H. Holmgren | P. K. Holmgren | R. C. Barneby 8752 | 25 May 1978 | United States of America | Utah | Uintah Co. Uinta Basin, Utah… | — |
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| Asclepias cryptoceras S.Watson subsp. cryptoceras | N. H. Holmgren | P. K. Holmgren 5050 | 06 Jun 1971 | United States of America | Utah | Daggett Co. Utah Highway 44,… | — |
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| Asclepias cryptoceras S.Watson subsp. cryptoceras | N. H. Holmgren | P. K. Holmgren 5119 | 09 Jun 1971 | United States of America | Utah | Uintah Co. Uinta Mountains, Utah… | — |
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| Asclepias cryptoceras subsp. davisii (Woodson) Woodson | N. H. Holmgren | P. K. Holmgren | B. Ertter | J. L. Strachan | C. A. M. Prentice 9261 | 06 Jun 1979 | United States of America | Oregon | Malheur Co. Succor Creek area,… | — |
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| Asclepias cryptoceras subsp. davisii (Woodson) Woodson | N. H. Holmgren | P. K. Holmgren 8872 | 06 Jun 1978 | United States of America | Oregon | Malheur Co. North Fork Malheur… | — |
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| Asclepias cryptoceras subsp. davisii (Woodson) Woodson | N. H. Holmgren | P. K. Holmgren 8227 | 22 Jun 1976 | United States of America | Nevada | Nye Co. White River Valley,… | — |
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| Asclepias cryptoceras subsp. davisii (Woodson) Woodson | N. H. Holmgren | P. K. Holmgren 8969 | 17 Jun 1978 | United States of America | Nevada | Eureka Co. Antelope Valley, U.S.… | — |
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| Asclepias cryptoceras subsp. davisii (Woodson) Woodson | N. H. Holmgren | P. K. Holmgren | S. Keller 10544 | 26 Jun 1984 | United States of America | Nevada | Lander Co. Shoshone Range, road… | — |
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| Asclepias eastwoodiana Barneby | N. H. Holmgren | P. K. Holmgren 12338 | 25 May 1995 | United States of America | Nevada | Nye Co. Railroad Valley, the… | — |
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| Asclepias eastwoodiana Barneby | N. H. Holmgren | P. K. Holmgren 8959 | 15 Jun 1978 | United States of America | Nevada | Nye Co. Southern Toquima Range,… | — |
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| Asclepias eastwoodiana Barneby | N. H. Holmgren | P. K. Holmgren 8955 | 15 Jun 1978 | United States of America | Nevada | Nye Co. Ralston Valley, at… | — |
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| Asclepias eastwoodiana Barneby | N. H. Holmgren | P. K. Holmgren 8954 | 14 Jun 1978 | United States of America | Nevada | Lander Co. Reese River Valley,… | — |
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| Asclepias erosa Torr. | N. H. Holmgren | P. K. Holmgren 13843 | 07 Jun 2000 | United States of America | Nevada | Nye Co. Railroad Valley, 36.2… | — |
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| Asclepias fascicularis Decne. | N. H. Holmgren | P. K. Holmgren 9715 | 01 Aug 1980 | United States of America | Nevada | Churchill Co. Lahontan Valley, Bass… | — |
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| Asclepias hallii A.Gray | N. H. Holmgren | P. K. Holmgren 9726 | 02 Aug 1980 | United States of America | Nevada | White Pine Co. White Pine… | — |
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| Asclepias hallii A.Gray | N. H. Holmgren | P. K. Holmgren 9726 | 02 Aug 1980 | United States of America | Nevada | White Pine Co. White Pine… | — |
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| Asclepias hallii A.Gray | N. H. Holmgren | P. K. Holmgren | R. C. Barneby 8795 | 28 May 1978 | United States of America | Utah | San Juan Co. Bluff Bench,… | — |
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| Asclepias labriformis M.E.Jones | N. H. Holmgren | P. K. Holmgren 5200 | 13 Jun 1971 | United States of America | Utah | Uintah Co. 11.8 miles east-northeast… | — |
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| Asclepias labriformis M.E.Jones | N. H. Holmgren | P. K. Holmgren 8405 | 11 Jun 1977 | United States of America | Utah | Garfield Co. Water Pocket Fold… | — |
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| Asclepias labriformis M.E.Jones | N. H. Holmgren | P. K. Holmgren 11558 | 19 Jun 1991 | United States of America | Utah | Garfield Co. Waterpocket Fold, 10.1… | — |
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| Asclepias labriformis M.E.Jones | N. H. Holmgren | P. K. Holmgren | C. Sue Keller 10912 | 24 Jun 1985 | United States of America | Utah | Garfield Co. Along the Burr… | — |
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| Asclepias latifolia (Torr.) Raf. | N. H. Holmgren | P. K. Holmgren | R. Kern 9033 | 19 Jul 1978 | United States of America | Arizona | Mohave Co. Tuweep Valley, 5.8… | — |
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| Asclepias latifolia (Torr.) Raf. | N. H. Holmgren | P. K. Holmgren | R. Kern 9033 | 19 Jul 1978 | United States of America | Arizona | Mohave Co. Tuweep Valley, 5.8… | — |
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| Asclepias macrosperma Eastw. ex Vail | N. H. Holmgren | P. K. Holmgren 12728 | 06 Jun 1997 | United States of America | Utah | San Juan Co. Kane Springs… | — |
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| Asclepias macrosperma Eastw. ex Vail | N. H. Holmgren | P. K. Holmgren 11533 | 18 Jun 1991 | United States of America | Utah | Garfield Co. Cane Spring Desert,… | — |
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| Asclepias macrosperma Eastw. ex Vail | N. H. Holmgren | P. K. Holmgren 11775 | 12 Jun 1992 | United States of America | Utah | Garfield Co. New Home Bench,… | — |
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| Asclepias macrosperma Eastw. ex Vail | N. H. Holmgren | P. K. Holmgren 11948 | 17 Jun 1993 | United States of America | Utah | San Juan Co. Utah Highway… | — |
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| Asclepias macrosperma Eastw. ex Vail | N. H. Holmgren | P. K. Holmgren | R. C. Barneby 9116 | 21 May 1979 | United States of America | Utah | Wayne Co. Water Pockey Fold… | — |
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| Asclepias macrosperma Eastw. ex Vail | N. H. Holmgren | P. K. Holmgren 13510 | 20 May 1999 | United States of America | Utah | San Juan Co. Desert 37… | — |
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| Asclepias macrosperma Eastw. ex Vail | N. H. Holmgren | P. K. Holmgren | A. Zwinger 11858 | 08 Jun 1993 | United States of America | Utah | San Juan Co. San Juan… | — |
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| Asclepias ruthiae Maguire | N. H. Holmgren | P. K. Holmgren | R. C. Barneby 9113 | 21 May 1979 | United States of America | Utah | Wayne Co. Utah Highway 24,… | — |
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| Asclepias ruthiae Maguire | N. H. Holmgren | P. K. Holmgren | R. C. Barneby 8780 | 27 May 1978 | United States of America | Utah | Emery Co. San Rafael Swell,… | — |
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| Asclepias ruthiae Maguire | N. H. Holmgren | P. K. Holmgren 11706 | 01 Jun 1992 | United States of America | Utah | Emery Co. San Rafael Desert,… | — |
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| Asclepias speciosa Torr. | N. H. Holmgren | P. K. Holmgren 5254 | 27 Jun 1971 | United States of America | Nevada | Nye Co. Railroad Valley, U.S.… | — |
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| Asclepias speciosa Torr. | N. H. Holmgren | P. K. Holmgren 9343 | 18 Jun 1979 | United States of America | Nevada | Lincoln Co. North Lake Valley,… | — |
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| Asclepias speciosa Torr. | N. H. Holmgren | P. K. Holmgren 10003 | 02 Jul 1981 | United States of America | Idaho | Franklin Co. Junction of Idaho… | — |
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