Displaying 1 - 75 out of 280 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Botrychium virginianum (L.) Sw. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | Red Riiver | — |
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| Campanulastrum americanum (L.) Small | Z. Pitcher s.n. | 1832 | United States of America | Arkansas | Red River | — |
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| Agalinis fasciculata (Elliott) Raf. | Z. Pitcher s.n. | 1832 | United States of America | Arkansas | Red River | — |
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| Dasistoma macrophylla (Nutt.) Raf. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | Red River | — |
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| Dichondra carolinensis Michx. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | Red River | — |
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| Evolvulus pilosus Nutt. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | Red River | — |
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| Lespedeza violacea (L.) Pers. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | Red River | — |
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| Strophostyles helvola (L.) Elliott | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | Red River | — |
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| Allium canadense L. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | [No specific locality] | — |
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| Dalea purpurea Vent. var. purpurea | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Bidens polylepis S.F.Blake | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Mimosa nuttallii (DC.) B.L.Turner | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Astranthium integrifolium (Michx.) Nutt. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Astranthium integrifolium (Michx.) Nutt. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Coreopsis grandiflora Hogg ex Sweet | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Dracopis amplexicaulis (Vahl) Cass. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Sphenopholis obtusata (Michx.) Scribn. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Vulpia myuros (L.) C.C.Gmel. | Z. Pitcher s.n. | 1832 | United States of America | Arkansas | — |
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| Vulpia octoflora var. glauca (Nutt.) Fernald | Z. Pitcher s.n. | 1832 | United States of America | Arkansas | — |
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| Myosotis verna Nutt. | Z. Pitcher s.n. | — | United States of America | Arkansas | — |
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| Baptisia leucantha Torr. & A.Gray | Z. Pitcher s.n. | — | United States of America | Arkansas | — |
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| Desmodium pauciflorum (Nutt.) DC. | Z. Pitcher s.n. | — | United States of America | Arkansas | — |
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| Desmodium sessilifolium Torr. & A.Gray | Z. Pitcher s.n. | — | United States of America | Arkansas | — |
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| Amorpha fruticosa L. | Z. Pitcher s.n. | — | United States of America | Arkansas | — |
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| Sanicula gregaria E.P.Bicknell | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Croton glandulosus L. var. glandulosus | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Cyperus lupulinus (Spreng.) Marcks subsp. lupulinus | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Acalypha monococca (Engelm. ex A.Gray) Lill.W.Mill. & Gandhi | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Echinacea pallida (Nutt.) Nutt. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Elymus virginicus L. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Lindernia dubia (L.) Pennell | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Pedicularis canadensis L. | Z. Pitcher s.n. | 1832 | United States of America | Arkansas | — |
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| Potentilla simplex Michx. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Iodanthus pinnatifidus (Michx.) Steud. | Z. Pitcher s.n. | 24 May 1831 | United States of America | Arkansas | — |
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| Amaranthus rudis J.D.Sauer | Z. Pitcher s.n. | 1832 | United States of America | Arkansas | — |
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| Callirhoe digitata Nutt. | Z. Pitcher s.n. | 1832 | United States of America | Arkansas | — |
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| Camassia angusta (Engelm. & A.Gray) Blank. | Z. Pitcher s.n. | 1832 | United States of America | Arkansas | — |
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| Scleria triglomerata Michx. | Z. Pitcher s.n. | 1832 | United States of America | Arkansas | — |
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| Veronica peregrina var. peregrina | Z. Pitcher s.n. | 1832 | United States of America | Arkansas | — |
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| Stylosanthes biflora var. biflora | Z. Pitcher s.n. | June 15 | United States of America | Arkansas | — |
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| Saxifraga texana Buckley | Z. Pitcher s.n. | March | United States of America | Arkansas | — |
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| Allium canadense var. mobilense (Regel) Ownbey | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Ambrosia bidentata Michx. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Amsonia tabernaemontana Walter | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Amsonia tabernaemontana Walter | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Anemone caroliniana Walter | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Arabis canadensis L. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Arabis laevigata (Muhl. ex Willd.) Poir. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Asclepias verticillata L. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Asclepias viridis Walter | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Baptisia leucophaea Nutt. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Ceanothus americanus L. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Cerastium brachypodum (Engelm. ex A.Gray) B.L.Rob. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Collinsia violacea Nutt. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Collinsia violacea Nutt. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Collinsia violacea Nutt. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Commelina erecta L. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Croton michauxii var. elliptica (Willd.) B.W.van Ee & P.E.Berry | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Croton monanthogynus Michx. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Cyperus squarrosus L. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Delphinium carolinianum Walter subsp. carolinianum | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Delphinium tricorne Michx. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Desmanthus illinoensis (Michx.) MacMill. ex B.L.Rob. & Fernald | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Diodia teres Walter | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Draba reptans (Lam.) Fernald var. reptans | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Ellisia nyctelea (L.) L. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Elymus virginicus var. intermedius (Vasey ex S.Watson & J.M.Coult.) Bush | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Euphorbia arkansana Engelm. & A.Gray | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Galium circaezans var. hypomalacum Fernald | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Geum vernum (Raf.) Torr. & A.Gray | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Hedeoma hispida Pursh | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Hedyotis caerulea (L.) Hook. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Hedyotis crassifolia Raf. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Helianthus mollis Lam. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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| Heliotropium tenellum (Nutt.) Torr. | Z. Pitcher s.n. | s.d. | United States of America | Arkansas | — |
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