Displaying 101 - 125 out of 312 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Tridens strictus (Nutt.) Nash | M. C. Leavenworth s.n. | s.d. | United States of America | Arkansas | — |
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| Carex retroflexa Muhl. ex Willd. | M. C. Leavenworth s.n. | — | United States of America | Arkansas | — |
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| Carex retroflexa Muhl. ex Willd. | M. C. Leavenworth s.n. | — | United States of America | Arkansas | — |
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| Solidago rigida var. rigida | M. C. Leavenworth s.n. | — | United States of America | Arkansas | — |
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| Platanthera leucophaea (Nutt.) Lindl. | M. C. Leavenworth s.n. | 1837 | United States of America | Arkansas | — |
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| Desmodium laevigatum (Nutt.) DC. | M. C. Leavenworth s.n. | — | United States of America | Arkansas | — |
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| Desmodium rigidum (Elliott) DC. | M. C. Leavenworth s.n. | Sept, Oct | United States of America | Arkansas | — |
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| Carex retroflexa Muhl. ex Willd. | M. C. Leavenworth s.n. | — | United States of America | Arkansas | — |
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| Carex complanata Torr. & Hook. | M. C. Leavenworth s.n. | 1845 | United States of America | Arkansas | — |
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| Ilex decidua Walter | M. C. Leavenworth s.n. | s.d. | United States of America | Arkansas | — |
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| Gaillardia aestivalis var. fastigiata (Greene) Waterf. | M. C. Leavenworth s.n. | s.d. | United States of America | Arkansas | — |
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| Phacelia hirsuta Nutt. | M. C. Leavenworth s.n. | s.d. | United States of America | Arkansas | — |
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| Acacia angustissima var. hirta (Nutt.) B.L.Rob. | M. C. Leavenworth s.n. | s.d. | United States of America | Arkansas | — |
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| Polygonella americana (Fisch. & C.A.Mey.) Small | M. C. Leavenworth s.n. | s.d. | United States of America | Arkansas | — |
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| Toxicoscordion nuttallii (A.Gray) Rydb. | M. C. Leavenworth s.n. | s.d. | United States of America | Arkansas | — |
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| Triodanis leptocarpa (Nutt.) Nieuwl. | M. C. Leavenworth s.n. | s.d. | United States of America | Arkansas | — |
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| Crataegus spathulata Michx. | M. C. Leavenworth s.n. | April | United States of America | Arkansas | — |
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| Limnosciadium pinnatum (DC.) Mathias & Constance | M. C. Leavenworth s.n. | May | United States of America | Arkansas | — |
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| Amsonia tabernaemontana var. salicifolia (Pursh) Woodson | M. C. Leavenworth s.n. | s.d. | United States of America | Arkansas | — |
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| Aristida purpurea var. longiseta (Steud.) Vasey | M. C. Leavenworth s.n. | s.d. | United States of America | Arkansas | — |
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| Asclepias verticillata L. | M. C. Leavenworth s.n. | s.d. | United States of America | Arkansas | — |
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| Ceanothus herbaceus Raf. | M. C. Leavenworth s.n. | s.d. | United States of America | Arkansas | — |
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| Convolvulus incanus Vahl | M. C. Leavenworth s.n. | s.d. | United States of America | Arkansas | — |
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| Eryngium leavenworthii Torr. & A.Gray | M. C. Leavenworth s.n. | s.d. | United States of America | Arkansas | — |
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| Euphorbia bicolor Engelm. & A.Gray | M. C. Leavenworth s.n. | s.d. | United States of America | Arkansas | — |
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