Displaying 1 - 25 out of 202 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | ||
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| Lithospermum occidentale (Mack.) Weakley, Witsell & D.Estes | J. C. Arthur s.n. | 14 Jul 1877 | United States of America | Iowa | Story Co. Ames | — | 21561 |
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| Besseya bullii (Eaton & Wright) Rydb. | J. C. Arthur s.n. | 25 May 1874 | United States of America | Iowa | Charles City | — | 28885 |
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| Dasyscyphus arida (W.Phillips) Sacc. | J. C. Arthur s.n. | — | United States of America | Colorado | Ouray. | — | 1720803 |
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| Eragrostis cilianensis (All.) Vignolo ex Janch. | J. C. Arthur s.n. | 8/2/1875 | United States of America | Iowa | Charles City | — | 1682164 |
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| Astragalus crassicarpus Nutt. var. crassicarpus | J. C. Arthur s.n. | 09 May 1877 - 30 May 1877 | United States of America | Iowa | Ames | — | 01247986 |
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| Astragalus crassicarpus Nutt. var. crassicarpus | J. C. Arthur s.n. | May 1870 | United States of America | Iowa | Ames | — | 01247989 |
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| Dalea candida Willd. var. candida | J. C. Arthur s.n. | 14 Jul 1877 | United States of America | Iowa | Ames | — | 01073601 |
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| Astragalus lotiflorus Hook. | J. C. Arthur s.n. | s.d. | United States of America | Iowa | Dubuque Co. Charles City | — | 01261157 |
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| Carya cordiformis (Wangenh.) K.Koch | J. C. Arthur s.n. | 04 Jun 1874 | United States of America | Iowa | Floyd Co. Charles City. | — | 1472293 |
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| Calamagrostis canadensis (Michx.) P.Beauv. | J. C. Arthur s.n. | 12 Aug 1875 | United States of America | Iowa | Charles City | — | 1645839 |
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| Poa nemoralis L. | J. C. Arthur s.n. | 12 Jul 1875 | United States of America | Iowa | Floyd Co. Charles City. | — | 1792087 |
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| Trichaptum biforme (Fr.) Ryvarden | J. C. Arthur s.n. | 19 Jun 1889 | United States of America | Indiana | Tippecanoe Co. Lafayette | — | 1937655 |
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| Artemisia dracunculus L. | J. C. Arthur s.n. | Aug 1870 | United States of America | Iowa | Ames | — | 1893826 |
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| Fomitopsis rosea (Alb.:Schwein.) P.Karst. | J. C. Arthur s.n. | 25 Jul 1886 | United States of America | Minnesota | Vermilion Lake | — | 1963419 |
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| Gloeophyllum trabeum (Pers.:Fr.) Murrill | J. C. Arthur s.n. | 21 May 1891 | United States of America | Maryland | Lafayette | — | 1964611 |
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| Irpex | J. C. Arthur | Dec 1896 | United States of America | Washington | Spirit Lake. | — | 1999694 |
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| Cirsium scariosum Nutt. | J. C. Arthur 5004 | 01 Aug 1912 | United States of America | Colorado | Ridgeway. | — | 2053197 |
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| Cytidia salicina (Fr.) Burt | J. C. Arthur s.n. | 20 Aug 1912 | United States of America | Colorado | Gilpin Co. Tolland | — | 01992061 |
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| Cytidia salicina (Fr.) Burt | J. C. Arthur s.n. | 20 Aug 1912 | United States of America | Colorado | Gilpin Co. Tolland | — | 1992062 |
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| Pycnoporus cinnabarinus (Jacq.:Fr.) P.Karst. | J. C. Arthur s.n. | 17 May 1893 | United States of America | Indiana | Tippecanoe Co. Lafayette | — | 1949514 |
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| Carex arcta Boott | J. C. Arthur B100 | 17 Jul 1886 | United States of America | Minnesota | Vermilion Lake. | — | 2236566 |
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| Carex bicknellii Britton | J. C. Arthur s.n. | 11 Jun 1874 | United States of America | Iowa | Floyd Co. Charles City, Iowa.… | — | 2251130 |
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| Carex buxbaumii Wahlenb. | J. C. Arthur s.n. | 11 Jun 1874 | United States of America | Iowa | Charles City. | — | 2253213 |
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| Carex davisii Schwein. & Torr. | J. C. Arthur s.n. | 02 Jun 1877 | United States of America | Iowa | Ames. | — | 2261925 |
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| Carex hystricina Muhl. ex Willd. | J. C. Arthur s.n. | — | — | — | — | 2191949 |
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