Displaying 1 - 50 out of 919 Object(s)

Taxon Collector Date Country State/Province Locality Type Status Barcode
Abietinella abietina (Hedw.) M.Fleisch. T. A. Williams 13 Aug 1891 United States of America South Dakota Rapid City — 467736
Acarospora T. A. Williams s.n. 27 Jul 1897 United States of America South Dakota Belle Fourche River, at Egge's… — 4586881 Acarospora
Acer glabrum Torr. T. A. Williams s.n. 23 Jun 1890 — — — 2483948 Acer glabrum Torr.
Achnatherum richardsonii (Link) Barkworth T. A. Williams 26761/2 25 Jul 1897 United States of America Wyoming Welcome — 1553848 Achnatherum richardsonii (Link) Barkworth
Aecidium micropunctum Ellis & Everh. T. A. Williams 42 18 Jun 1890 United States of America Nebraska Pine Ridge isotype 611222 Aecidium micropunctum Ellis & Everh.
Agaricus silvicola (Vittad.) Sacc. T. A. Williams s.n. 9/25-99 United States of America Maryland Montgomery Co. Takoma Park — 1979833 Agaricus silvicola (Vittad.) Sacc.
Agoseris aurantiaca (Hook.) Greene var. aurantiaca T. A. Williams s.n. 24 Jul 1897 United States of America Montana Bear Lodge — 1867488 Agoseris aurantiaca (Hook.) Greene var. aurantiaca
Agrostis T. A. Williams s.n. July 16-18, 1897 United States of America Idaho Montpelier — 1637086 Agrostis
Agrostis perennans (Walter) Tuck. T. A. Williams s.n. 22 May 1899 United States of America District of Columbia Takoma Park. — 1556926 Agrostis perennans (Walter) Tuck.
Albugo bliti (Biv.) J.E.Kuntze T. A. Williams s.n. 1890 United States of America Nebraska Saunders Co. Ashland. — 2759916 Albugo bliti (Biv.) J.E.Kuntze
Albugo candida (Pers.) Roussel T. A. Williams s.n. 23 Sep 1895 United States of America South Dakota Brookings Co. Brookings. — 2771292 Albugo candida (Pers.) Roussel
Albugo candida (Pers.) Roussel T. A. Williams s.n. Aug 1889 United States of America Nebraska Cass Co. Weeping Water — 2771207 Albugo candida (Pers.) Roussel
Albugo candida (Pers.) Roussel T. A. Williams s.n. 4/27-'90 United States of America Nebraska Saunders Co. Ashland. — 2771305 Albugo candida (Pers.) Roussel
Albugo ipomoaea-panduratae (C.Schweinf.) D.B.Swingle T. A. Williams s.n. Sep 1889 United States of America Nebraska Saunders Co. Ashland. — 2771892 Albugo ipomoaea-panduratae (C.Schweinf.) D.B.Swingle
Albugo ipomoaea-panduratae (C.Schweinf.) D.B.Swingle T. A. Williams s.n. 15 Jul 1899 United States of America District of Columbia Takoma Park — 2771865 Albugo ipomoaea-panduratae (C.Schweinf.) D.B.Swingle
Albugo tragopogonis (Pers.) Gray T. A. Williams s.n. Aug 1891 United States of America South Dakota Brookings Co. Brookings. — 2767259 Albugo tragopogonis (Pers.) Gray
Albugo tragopogonis (Pers.) Gray T. A. Williams s.n. Aug 1891 United States of America South Dakota Brookings Co. Brookings. — 2767284 Albugo tragopogonis (Pers.) Gray
Albugo tragopogonis (Pers.) Gray T. A. Williams s.n. Aug 1891 United States of America South Dakota Brookings Co. Brookings. — 2767346 Albugo tragopogonis (Pers.) Gray
Allium brevistylum S.Watson T. A. Williams s.n. 19 Aug 1898 United States of America Wyoming North Fork Clear Creek, Big… — 3761871 Allium brevistylum S.Watson
Allium brevistylum S.Watson T. A. Williams s.n. Aug 1898 United States of America Wyoming Big Horn Mountains — 3761870 Allium brevistylum S.Watson
Amorpha nana Nutt. T. A. Williams 406 03 Aug 1891 United States of America South Dakota Hughes Co. Bluffs of Missouri — 2559853 Amorpha nana Nutt.
Amorpha nana Nutt. T. A. Williams s.n. 04 Aug 1891 United States of America South Dakota Bluffs of Missouri River, Ft.… — 2559862 Amorpha nana Nutt.
Anaphalis margaritacea (L.) Benth. & Hook.f. T. A. Williams s.n. 20 Aug 1898 United States of America Wyoming Soldier Park. Big Horn Mts. — 1884733 Anaphalis margaritacea (L.) Benth. & Hook.f.
Androsace filiformis Retz. T. A. Williams s.n. 21 Aug 1898 United States of America Wyoming Head of French Cr. Big… — 3591969 Androsace filiformis Retz.
Androsace septentrionalis L. T. A. Williams s.n. 26 Jul 1897 United States of America Wyoming Welcome — 3592442 Androsace septentrionalis L.
Antennaria parvifolia Nutt. T. A. Williams s.n. 20 Jun 1890 United States of America Nebraska War Bonnet Creek — 1878739 Antennaria parvifolia Nutt.
Antennaria racemosa Hook. T. A. Williams s.n. 12 Aug 1898 United States of America Wyoming North Fork Clear Creek, Big… — 1879458 Antennaria racemosa Hook.
Antennaria racemosa Hook. T. A. Williams s.n. Aug 1898 United States of America Wyoming Big Horn Mts. — 1879424 Antennaria racemosa Hook.
Antennaria rosea subsp. arida (E.E.Nelson) R.J.Bayer T. A. Williams s.n. 23 Jun 1890 United States of America Nebraska War Bonnet Canyon — 1879713 Antennaria rosea subsp. arida (E.E.Nelson) R.J.Bayer
Anthoxanthum nitens (Weber) Y.Schouten & Veldkamp T. A. Williams 2916 10 Aug 1897 United States of America Wyoming Meeteetse Creek — 1641148 Anthoxanthum nitens (Weber) Y.Schouten & Veldkamp
Anticlea elegans (Pursh) Rydb. T. A. Williams s.n. 1903 United States of America South Dakota Brookings Co. — 3688721 Anticlea elegans (Pursh) Rydb.
Anticlea elegans (Pursh) Rydb. T. A. Williams s.n. 23 Jul 1897 United States of America Wyoming Little Laramie R., Sheep Mts. — 3688481 Anticlea elegans (Pursh) Rydb.
Apiosporina collinsii (Schwein.) Höhn. T. A. Williams s.n. 26 Jul 1897 United States of America Wyoming Welcome — 2989764 Apiosporina collinsii (Schwein.) Höhn.
Aragallus angustatus Rydb. T. A. Williams s.n. 18 Jun 1890 United States of America Nebraska Pine Ridge. type 5181 Aragallus angustatus Rydb.
Aralia nudicaulis L. T. A. Williams s.n. 14 May 1898 United States of America District of Columbia Rock Creek — 2558067 Aralia nudicaulis L.
Arceuthobium cyanocarpum (A.Nelson ex Rydb.) J.M.Coult. & A.Nelson T. A. Williams s.n. 03 Jul 1897 United States of America Wyoming Sheep Mountain — 01000865 Arceuthobium cyanocarpum (A.Nelson ex Rydb.) J.M.Coult. & A.Nelson
Argyrochosma dealbata (Pursh) Windham T. A. Williams s.n. 29 Jul 1888 United States of America Nebraska Weeping Water — 3483847 Argyrochosma dealbata (Pursh) Windham
Aristida purpurea Nutt. T. A. Williams 67 06 Aug 1891 United States of America South Dakota Frozen Man's Creek — 1632067 Aristida purpurea Nutt.
Arnica chamissonis Less. T. A. Williams 8800 19 Aug 1898 United States of America Wyoming North fork, Churn Creek, Big… — 1870617 Arnica chamissonis Less.
Artemisia biennis Willd. T. A. Williams s.n. Sep 1893 United States of America Nebraska Grant Co. 1 mile W… — 1892473 Artemisia biennis Willd.
Artemisia longifolia Nutt. T. A. Williams s.n. 23 Aug 1891 — — Indian Creek; North American Flora — 1894689 Artemisia longifolia Nutt.
Artemisia ludoviciana Nutt. subsp. ludoviciana T. A. Williams s.n. 14 Aug 1898 United States of America Wyoming North Fork Clear Creek, Big… — 1907881 Artemisia ludoviciana Nutt. subsp. ludoviciana
Artemisia ludoviciana Nutt. subsp. ludoviciana T. A. Williams s.n. 14 Aug 1899 United States of America Wyoming North Fork Clear Creek, Big… — 1907820 Artemisia ludoviciana Nutt. subsp. ludoviciana
Arthonia dispersa (Schrad.) Nyl. T. A. Williams s.n. 16 Feb 1895 United States of America Nebraska Cass Co. Weeping Water. — 4440458 Arthonia dispersa (Schrad.) Nyl.
Arthonia dispersa (Schrad.) Nyl. T. A. Williams s.n. 16 Feb 1895 United States of America Nebraska Cass Co. Weeping Water. — 04440005 Arthonia dispersa (Schrad.) Nyl.
Arthonia dispersa (Schrad.) Nyl. T. A. Williams s.n. 16 Feb 1895 United States of America Nebraska Cass Co. Weeping Water. — 1364414 Arthonia dispersa (Schrad.) Nyl.
Arthonia punctiformis Ach. T. A. Williams s.n. May 1898 United States of America District of Columbia Takoma Park. — 4440535 Arthonia punctiformis Ach.
Arthonia punctiformis Ach. T. A. Williams s.n. 29 Nov 1895 United States of America Nebraska Cass Co. Weeping Water. — 04440038 Arthonia punctiformis Ach.
Arthonia punctiformis Ach. T. A. Williams s.n. 29 Nov 1895 United States of America Nebraska Cass Co. Weeping Water. — 4584632 Arthonia punctiformis Ach.
Arthonia quintaria Nyl. T. A. Williams s.n. Oct 1897 - Dec 1897 United States of America District of Columbia Takoma Park. — 4440518 Arthonia quintaria Nyl.