Displaying 1 - 50 out of 331 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | ||
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| Abronia mellifera var. marginata (Eastw.) Spellenb. | I. F. Tidestrom 9442 | 13 May 1919 | United States of America | Utah | Newcastle. | — | 242346 |
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| Acer glabrum var. torreyi (Greene) Smiley | I. F. Tidestrom 10556 | 12 Jul 1919 | United States of America | Nevada | Washoe Co. On slopes in… | — | 2484289 |
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| Acer grandidentatum Nutt. ex Torr. & A.Gray | I. F. Tidestrom 342 | 27 Aug 1907 | United States of America | Utah | Ephraim Cañon, Wasatch Mountains | — | 1002731 |
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| Achillea millefolium L. | I. F. Tidestrom 12076 | 20 Jun 1924 | United States of America | Maryland | Roadsides, between Salisbury Md and… | — | 1866304 |
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| Actaea rubra (Aiton) Willd. | I. F. Tidestrom 3770 | 09 Jul 1910 | United States of America | Colorado | Mount Carbon | — | 2728185 |
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| Agoseris x agrestis Osterh. | I. F. Tidestrom 3760 | 11 Jul 1910 | United States of America | Colorado | Along creeks, Mount Carbon. | — | 1867123 |
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| Allenrolfea occidentalis (S.Watson) Kuntze | I. F. Tidestrom 8975 | 15 Apr 1919 | United States of America | Nevada | Clark Co. Vegas Wash near… | — | 216652 |
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| Allenrolfea occidentalis (S.Watson) Kuntze | I. F. Tidestrom 10781 | 30 Jul 1919 | United States of America | Nevada | Churchill Co. Characteristic plant along… | — | 216662 |
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| Allium bisceptrum S.Watson var. bisceptrum | I. F. Tidestrom 10172 | 01 Jul 1919 | United States of America | Nevada | Sweetwater Mts., near Sweetwater. | — | 3761549 |
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| Allophyllum gilioides subsp. violaceum (A.Heller) A.G.Day | I. F. Tidestrom 10415 | 08 Jul 1919 | United States of America | Nevada | Carson City (Independent City). Ormsby… | — | 01011729 |
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| Alnus serrulata (Aiton) Willd. | I. F. Tidestrom 438 | 26 Oct 1910 | United States of America | District of Columbia | Terra Cotta, D.C. | — | 2472899 |
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| Amelanchier utahensis Koehne | I. F. Tidestrom 9326 | 06 May 1919 | United States of America | Utah | In ravines near Apex Mine,… | — | 849826 |
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| Amelanchier utahensis Koehne | I. F. Tidestrom 9600 | 25 May 1919 | United States of America | Nevada | Kyle Canon [Canyon], Charleston Mts.;… | — | 2732362 |
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| Anemopsis californica (Nutt.) Hook. & Arn. | I. F. Tidestrom 9246 | 02 May 1919 | United States of America | Utah | St. George | — | 500630 |
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| Angelica kingii (S.Watson) J.M.Coult. & Rose | I. F. Tidestrom 11103 | 23 Aug 1919 | United States of America | Nevada | White Pine Co. Schell Creek… | — | 1092662 |
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| Anthemis cotula L. | I. F. Tidestrom 11405 | 11 Jul 1923 | United States of America | Maryland | Chesapeake City | — | 1896049 |
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| Apocynum androsaemifolium L. | I. F. Tidestrom 10255 | 05 Jul 1919 | United States of America | Nevada | On slopes mountains west of… | — | 4174208 |
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| Apocynum cannabinum L. | I. F. Tidestrom 9157 | 25 Apr 1919 | United States of America | Nevada | St. Thomas. | — | 4175021 |
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| Aquilegia formosa var. truncata (Fisch. & C.A.Mey.) Baker | I. F. Tidestrom 10176 | 01 Jul 1919 | United States of America | Nevada | Sweetwater Mountains, near Sweetwater | — | 485903 |
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| Arabis holboellii var. secunda (Howell) Jeps. | I. F. Tidestrom 9638 | 25 May 1919 | United States of America | Nevada | Kyle Cañon, Charleston Mtns. | — | 112620 |
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| Arabis pendulina Greene | I. F. Tidestrom 9636 | 25 May 1919 | United States of America | Nevada | On slopes, Kyle Cañon [Canyon],… | — | 3171115 |
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| Arabis pulchra M.E.Jones ex S.Watson var. pulchra | I. F. Tidestrom 8905 | 09 Apr 1919 | United States of America | Nevada | On slopes, Goodspring. Covillea belt. | — | 3171478 |
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| Arctomecon californica Torr. & Frém. | I. F. Tidestrom 9578 | 23 May 1929 | United States of America | Nevada | Clark Co. On mesa. [County… | — | 3696146 |
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| Arctomecon californica Torr. & Frém. | I. F. Tidestrom 9050 | 19 Apr 1919 | United States of America | Nevada | Scattered colonies on mesa n.… | — | 3696156 |
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| Arctomecon humilis Coville | I. F. Tidestrom 9296 | 05 May 1919 | United States of America | Utah | Washington Co. On Mesa between… | — | 24423 |
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| Argemone munita subsp. rotundata (Rydb.) G.B.Ownbey | I. F. Tidestrom s.n. | 10 May 1919 | United States of America | Utah | Leeds | — | 499917 |
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| Argemone munita subsp. rotundata (Rydb.) G.B.Ownbey | I. F. Tidestrom 9535 | 15 May 1919 | United States of America | Nevada | Caliente | — | 499933 |
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| Argemone munita subsp. rotundata (Rydb.) G.B.Ownbey | I. F. Tidestrom 10077 | 27 Jun 1919 | United States of America | Nevada | Corey Canyon, Wassuk Mountains | — | 499934 |
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| Artemisia biennis Willd. | I. F. Tidestrom 4039 | 19 Aug 1910 | United States of America | Colorado | Vicinity of Mount Carbon. | — | 1892406 |
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| Astragalus amphioxys A.Gray var. amphioxys | I. F. Tidestrom 2045 | 09 May 1909 | United States of America | Utah | Green River | — | 791079 |
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| Astragalus bisulcatus var. haydenianus (A.Gray) Barneby | I. F. Tidestrom 2129 | 28 May 1909 | United States of America | Colorado | At Montrose | — | 01244873 |
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| Astragalus canadensis var. brevidens (Gand.) Barneby | I. F. Tidestrom 2774 | 16 Aug 1919 | United States of America | Idaho | East Fork, Wood River | — | 797157 |
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| Astragalus canadensis var. brevidens (Gand.) Barneby | I. F. Tidestrom 10213 | 03 Jul 1919 | United States of America | Nevada | Carson City | — | 797365 |
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| Astragalus canadensis var. brevidens (Gand.) Barneby | I. F. Tidestrom 2797 | 19 Aug 1909 | United States of America | Idaho | Blaine Co. Ketchum | — | 01247323 |
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| Astragalus casei A.Gray | I. F. Tidestrom 9999 | 19 Jun 1919 | United States of America | California | Benton | — | 797484 |
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| Astragalus cymboides M.E.Jones | I. F. Tidestrom 2044 | 9 May 1909 | United States of America | Utah | Green River | — | 812050 |
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| Astragalus eurekensis M.E.Jones | I. F. Tidestrom 2083 | 17 May 1909 | United States of America | Utah | East of Ephraim | — | 812904 |
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| Astragalus eurekensis M.E.Jones | I. F. Tidestrom 2083 | 17 May 1909 | United States of America | Utah | East of Ephraim | — | 812905 |
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| Astragalus flavus Nutt. | I. F. Tidestrom 2128 | 28 May 1909 | United States of America | Colorado | At Montrose | — | 01249243 |
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| Astragalus flavus Nutt. var. flavus | I. F. Tidestrom 9383 | 9 May 1919 | United States of America | Utah | Washington | — | 813214 |
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| Astragalus layneae Greene | I. F. Tidestrom 8774 | 1 Apr 1919 | United States of America | Nevada | Draw north of Nelson, El… | — | 675484 |
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| Astragalus lentiginosus var. fremontii (A.Gray ex Torr.) S.Watson | I. F. Tidestrom 9817 | 11 Jun 1919 | United States of America | Nevada | Esmeralda Co. On mesa, Lida | — | 675613 |
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| Astragalus lentiginosus var. fremontii (A.Gray ex Torr.) S.Watson | I. F. Tidestrom 8866 | 08 Apr 1919 | United States of America | Nevada | Clark Co. On mesa, Erie | — | 01259844 |
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| Astragalus lentiginosus var. fremontii (A.Gray ex Torr.) S.Watson | I. F. Tidestrom 9655 | 27 May 1919 | United States of America | Nevada | On slopes, base of Charleston… | — | 01259845 |
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| Astragalus lentiginosus var. salinus (Howell) Barneby | I. F. Tidestrom 9444 | 13 May 1919 | United States of America | Utah | Near Modena | — | 01260650 |
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| Astragalus lentiginosus var. scorpionis M.E.Jones | I. F. Tidestrom 10851 | 07 Aug 1919 | United States of America | Nevada | Kingston Cañon, Toiyabe Mountains | — | 675934 |
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| Astragalus minthorniae var. villosus Barneby | I. F. Tidestrom 9612 | 25 May 1919 | United States of America | Nevada | Clark Co. Kyle Cañon. Charleston… | — | 01261402 |
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| Astragalus mollissimus var. thompsonae (S.Watson) Barneby | I. F. Tidestrom 9417 | 1908 | United States of America | Utah | Cedar City | — | 676801 |
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| Astragalus nothoxys A.Gray | I. F. Tidestrom 710 | 28 Mar 1908 | United States of America | Arizona | About Nogales | — | 01266509 |
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| Astragalus oophorus var. caulescens (M.E.Jones) M.E.Jones | I. F. Tidestrom 9419 | 11 May 1919 | United States of America | Utah | In cañon, Cedar City | — | 677489 |
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