Displaying 1 - 75 out of 322 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | ||
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| Poa alpina L. | F. V. Hayden 184 | 1873 | United States of America | Colorado | South Park. | — | 1783814 |
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| Poa fendleriana (Steud.) Vasey | F. V. Hayden 114 | 1873 | United States of America | Colorado | Apline. | — | 1789990 |
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| Poa reflexa Vasey & Scribn. | F. V. Hayden 602 | 1873 | United States of America | Colorado | Twin Lakes. | — | 1794527 |
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| Poa secunda J.Presl | F. V. Hayden s.n. | 1873 | United States of America | Colorado | Park Co. South Park. | — | 1778671 |
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| Poa secunda J.Presl | F. V. Hayden 286 | 1873 | United States of America | Colorado | South Park. | — | 1778675 |
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| Deschampsia cespitosa (L.) P.Beauv. | F. V. Hayden 740 | 1873 | United States of America | Colorado | Lake Co. | — | 1589531 |
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| Deschampsia cespitosa (L.) P.Beauv. | F. V. Hayden 725 | 1873 | United States of America | Colorado | Lake Co. | — | 1589558 |
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| Trisetum spicatum (L.) K.Richt. | F. V. Hayden 669 | 1873 | United States of America | Colorado | Lake Co. | — | 1820433 |
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| Symphyotrichum spathulatum var. spathulatum | F. V. Hayden s.n. | Aug 1868 | United States of America | Colorado | North Park | — | 1858415 |
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| Tetradymia canescens DC. | F. V. Hayden s.n. | 1868 | United States of America | Colorado | Larimer Co. | — | 2917135 |
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| Eriogonum alatum Torr. var. alatum | F. V. Hayden s.n. | 10 Feb 1905 | United States of America | Colorado | South Park | — | 3064900 |
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| Eriogonum alatum Torr. var. alatum | F. V. Hayden s.n. | 10 Feb 1905 | United States of America | Colorado | North[?] Park | — | 3064943 |
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| Erysimum asperum (Nutt.) DC. | F. V. Hayden s.n. | s.d. | United States of America | Colorado | — | 3185727 |
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| Mahonia repens (Lindl.) G.Don | F. V. Hayden s.n. | 1872 | United States of America | Colorado | — | 3840586 |
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| Poa alpina L. | F. V. Hayden 260 & 589 | 1873 | United States of America | Colorado | — | 01783801 |
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| Trisetum spicatum (L.) K.Richt. | F. V. Hayden 580 | 1873 | United States of America | Colorado | — | 1820420 |
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| Solidago rigida var. humilis Porter | F. V. Hayden s.n. | — | United States of America | Colorado | — | 2370982 |
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| Festuca idahoensis Elmer | F. V. Hayden 295 | 1873 | United States of America | Colorado | — | 1691737 |
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| Chamaerhodos erecta (L.) Bunge | F. V. Hayden s.n. | s.d. | United States of America | Colorado | — | 2723813 |
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| Philonotis fontana (Hedw.) Brid. var. fontana | F. V. Hayden | — | United States of America | Colorado | — | 439404 | |||
| Silene menziesii Hook. | F. V. Hayden s.n. | June 1871 | United States of America | Idaho | Rocky Mountains | — | 453071 |
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| Carex hallii Olney | F. V. Hayden s.n. | Jun 1871 | United States of America | Idaho | Rocky Mountains. | lectotype | 11135 | ||
| Oxytropis lagopus Nutt. | F. V. Hayden s.n. | Jun 1871 | United States of America | Idaho | Rocky Mtns. | — | 1586464 |
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| Erigeron compositus var. glabratus Macoun | F. V. Hayden s.n. | Jun 1871 | United States of America | Idaho | Rocky Mountains | — | 2078918 |
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| Phacelia sericea (Graham) A.Gray var. sericea | F. V. Hayden s.n. | Jun 1871 | United States of America | Idaho | Rocky Mtns. | — | 3210550 |
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| Castilleja pallescens (A.Gray) Greenm. | F. V. Hayden s.n. | Jun 1871 | United States of America | Idaho | Rocky Mtns. | — | 3259864 |
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| Pedicularis contorta var. contorta | F. V. Hayden s.n. | Jun 1871 | United States of America | Idaho | Rocky Mtns. (Only found before… | — | 3299215 |
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| Veronica peregrina var. peregrina | F. V. Hayden s.n. | Jun 1871 | United States of America | Idaho | Rocky Mtns. | — | 3324894 |
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| Saxifraga caespitosa var. subgemmifera | F. V. Hayden s.n. | Jun 1871 | United States of America | Idaho | Rocky Mtns. | — | 3474149 |
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| Maianthemum racemosum subsp. amplexicaule (Nutt.) LaFrankie | F. V. Hayden s.n. | Jun 1871 | United States of America | Idaho | Rocky Mtns. | — | 3571364 |
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| Androsace filiformis Retz. | F. V. Hayden s.n. | Jun 1871 | United States of America | Idaho | Rocky Mtns. | — | 3591989 |
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| Toxicoscordion venenosum var. gramineum (Rydb.) Brasher | F. V. Hayden s.n. | Jun 1871 | United States of America | Idaho | Rocky Mtns. | — | 3805274 |
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| Urocystis granulosa Clinton | F. V. Hayden | 1859 | United States of America | Idaho | type | 00738256 |
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| Urocystis granulosa Clinton | F. V. Hayden | 1859 | United States of America | Idaho | type | 00738257 |
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| Catabrosa aquatica (L.) P.Beauv. | F. V. Hayden s.n. | Jun 1871 | United States of America | Idaho | Rocky Mtns. | — | 1647899 |
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| Deschampsia cespitosa (L.) P.Beauv. | F. V. Hayden s.n. | Jun 1871 | United States of America | Idaho | Rocky Mtns. | — | 1589416 |
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| Koeleria pyramidata (Lam.) P.Beauv. | F. V. Hayden s.n. | Jun 1871 | United States of America | Idaho | Rocky Mtns. | — | 1733778 |
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| Trifolium longipes subsp. hansenii (Greene) J.M.Gillett | F. V. Hayden s.n. | Jun 1871 | United States of America | Idaho | Rocky Mtns. | — | 2625337 |
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| Anemone multifida Poir. var. multifida | F. V. Hayden s.n. | Jun 1871 | United States of America | Idaho | Rocky Mtns. | — | 2739631 |
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| Clematis hirsutissima Pursh | F. V. Hayden s.n. | 1871 | United States of America | Idaho | Rocky Mtns. | — | 2745037 |
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| Clematis hirsutissima Pursh | F. V. Hayden 3301 | Jun 1870 | United States of America | Idaho | Rocky Mts. | — | 2745057 |
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| Potentilla fruticosa L. | F. V. Hayden s.n. | Jun 1871 | United States of America | Idaho | Rocky Mtns. | — | 2831018 |
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| Townsendia parryi D.C. Eaton | F. V. Hayden s.n. | 1871 | United States of America | Idaho | Rocky Mtns. of Idaho. | — | 2923476 |
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| Trifolium haydenii Porter | F. V. Hayden s.n. | 25 Jun 1871-30 Jun 1871 | United States of America | Montana | M.T. [=Montana Territory] Rocky Mountains,… | isolectotype | 33722 |
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| Penstemon eriantherus var. redactus Pennell & D.D.Keck | F. V. Hayden s.n. | 1871 | United States of America | Montana | Stinking Water Creek | — | 593179 |
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| Penstemon eriantherus var. redactus Pennell & D.D.Keck | F. V. Hayden s.n. | 03 Jul 1871 | United States of America | Montana | Stinking Water Creek | — | 593182 |
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| Chaenactis douglasii (Hook.) Hook. & Arn. | F. V. Hayden s.n. | 08 Jul 1871 | United States of America | Montana | Madison Valley, M. T. | — | 2033553 |
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| Erigeron compositus var. discoideus A.Gray | F. V. Hayden s.n. | 1853 - 1854 | United States of America | Montana | Roosevelt Co. Fort Union; near… | — | 2078788 |
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| Eremogone congesta var. congesta | F. V. Hayden s.n. | 24 Jul 1871 | United States of America | Montana | Hot Sulphur Springs, M. T.… | — | 3184625 |
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| Boykinia jamesii var. heucheriformis (Rydb.) Engl. | F. V. Hayden s.n. | 24 Jul 1871 | United States of America | Montana | Hot Sulphur Springs | — | 3461057 |
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| Heuchera cylindrica Douglas ex Hook. | F. V. Hayden s.n. | 25 Jun 1871 - 30 Jun 1871 | United States of America | Montana | Mtns. South of Virginia City | — | 3462222 |
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| Eriogonum pauciflorum var. gnaphalodes (Benth.) Reveal | F. V. Hayden s.n. | s.d. | United States of America | Montana | Roosevelt Co. Fort Union | — | 3124314 |
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| Nasturtium calycinum (Hook.) Engelm. ex Hayden | F. V. Hayden s.n. | Jul 1854 | United States of America | Montana | Custer Co. Yellowstone, near Fork… | isolectotype | 185587 |
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| Koeleria pyramidata (Lam.) P.Beauv. | F. V. Hayden s.n. | 28 Jun 1860 | United States of America | Montana | On Madison River | — | 1733819 |
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| Ivesia gordonii (Hook.) Torr. & A.Gray | F. V. Hayden s.n. | 03 Jul 1871 | United States of America | Montana | Stinking Water Creek, M.T. [Montana… | — | 2812129 |
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| Iliamna rivularis (Douglas ex Hook.) Greene | F. V. Hayden | 15 Jul 1871-20 Jul 1871 | United States of America | Montana | Fort Ulis to the Yellowstone,… | — | 177436 |
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| Astragalus vexilliflexus E.Sheld. var. vexilliflexus | F. V. Hayden s.n. | 15 Jul 1871 - 20 Jul 1871 | United States of America | Montana | Ft. Ellis to the Yellowstone | — | 01344310 |
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| Pinus albicaulis Engelm. | F. V. Hayden s.n. | 1873 | United States of America | Montana | — | 34539 |
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| Euphorbia petaloidea var. nicolletii Engelm. | F. V. Hayden | 1853-1854 | United States of America | Nebraska | Yellowstone Country | holotype | 263168 |
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| Penstemon angustifolius Nutt. ex Pursh var. angustifolius | F. V. Hayden s.n. | 1853-1854 | United States of America | Nebraska | Eaglenest Butte | — | 569809 |
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| Penstemon albidus Nutt. | F. V. Hayden s.n. | 21 Jul 1853 | United States of America | Nebraska | Fort Pierre | — | 541691 |
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| Penstemon glaber Pursh var. glaber | F. V. Hayden 3 | Jul 1854 | United States of America | Nebraska | Fort Clark | — | 595806 |
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| Penstemon digitalis Nutt. ex Sims | F. V. Hayden s.n. | 1853-1854 | United States of America | Nebraska | Fort Leavenworth | — | 592091 |
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| Solanum triflorum Nutt. | F. V. Hayden s.n. | 1853 - 1854 | United States of America | Nebraska | Fort Union | — | 00820281 |
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| Solanum rostratum Dunal | F. V. Hayden s.n. | 1853-4 | United States of America | Nebraska | Fort Pierre etc. | — | 00820878 |
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| Astragalus adsurgens var. robustior Hook. | F. V. Hayden s.n. | 30 May 1853 - 30 May 1854 | United States of America | Nebraska | From Fort Pierre to Bad… | — | 01203650 |
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| Astragalus agrestis Douglas ex G.Don | F. V. Hayden 358 | Jul 1851 | United States of America | Nebraska | Fort Pierre & Fort Union | — | 01214878 |
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| Astragalus crassicarpus Nutt. var. crassicarpus | F. V. Hayden s.n. | 28 Jun 1853 | United States of America | Nebraska | Sage Creek | — | 01248000 |
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| Astragalus drummondii Douglas ex Hook. | F. V. Hayden 207 | Sep 1853 - 1854 | United States of America | Nebraska | Fort Union | — | 01248895 |
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| Astragalus flexuosus (Hook.) Douglas ex G.Don var. flexuosus | F. V. Hayden s.n. | 30 Jun 1853 | United States of America | Nebraska | Mauvaises Terres | — | 01249335 |
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| Astragalus gilviflorus E.Sheld. | F. V. Hayden s.n. | May 1853 - 1854 | United States of America | Nebraska | White River Valley | — | 01249758 |
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| Astragalus kentrophyta A.Gray var. kentrophyta | F. V. Hayden s.n. | Jun 1853 - 1854 | United States of America | Nebraska | Yellowstone | — | 01258283 |
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| Astragalus plattensis Nutt. ex Torr. & A.Gray | F. V. Hayden s.n. | 20 Jun 1853 | United States of America | Nebraska | Fort Pierre | — | 01246673 |
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| Dalea enneandra Nutt. | F. V. Hayden | 1853 - 1854 | United States of America | Nebraska | Fort Pierre | — | 01259355 |
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| Astragalus missouriensis Nutt. var. missouriensis | F. V. Hayden s.n. | 12 Jul 1853 | United States of America | Nebraska | Mauvaises Terres | — | 01262046 |
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