Displaying 226 - 250 out of 312 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Oxypolis rigidior (L.) Raf. | M. C. Leavenworth s.n. | s.d. | United States of America | — | Florida or Ark. | — |
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| Obolaria virginica L. | M. C. Leavenworth s.n. | s.d. | United States of America | — | Gea Alabama + Louisiana | — |
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| Sedum nuttallianum Raf. | M. C. Leavenworth s.n. | s.d. | United States of America | — | Prairies of Red River | — |
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| Mentzelia oligosperma Nutt. | M. C. Leavenworth s.n. | June + July | United States of America | — | Prairies of Red River | — |
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| Alophia drummondii (Graham) R.C.Foster | M. C. Leavenworth s.n. | s.d. | United States of America | — | Texas + Louisiana | — |
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| Vitis aestivalis Michx. | M. C. Leavenworth s.n. | s.d. | United States of America | — | Texas + Louisiana- also in… | — |
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| Ranunculus laxicaulis Darby | M. C. Leavenworth s.n. | Apr 1837 - May 1837 | United States of America | — | it may be near Sabine… | — |
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| Pediomelum hypogaeum var. subulatum (A.Gray) J.W.Grimes | M. C. Leavenworth s.n. | s.d. | United States of America | Texas | Nacogdoches Co. Near Nagadoches | — |
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| Desmanthus illinoensis (Michx.) MacMill. ex B.L.Rob. & Fernald | M. C. Leavenworth s.n. | June-July | United States of America | Oklahoma | Choctaw Co. from Fort Towson… | — |
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| Physostegia intermedia (Nutt.) Engelm. & A.Gray | M. C. Leavenworth s.n. | s.d. | United States of America | Oklahoma | Choctaw Co. | — |
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| Selenia aurea Nutt. | M. C. Leavenworth s.n. | 1832 - 1833 | United States of America | Texas | San Augustine Co. Ayish Bayou… | — |
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| Selenia aurea Nutt. | M. C. Leavenworth s.n. | 1832 - 1833 | United States of America | Texas | San Augustine Co. Ayish Bayou… | — |
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| Selenia aurea Nutt. | M. C. Leavenworth s.n. | 1832 - 1833 | United States of America | Texas | San Augustine Co. Ayish Bayou… | — |
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| Mentzelia floridana Nutt. ex Torr. & A.Gray | M. C. Leavenworth s.n. | 1839 | United States of America | Florida | Hillsborough Co. Tampa Bay. | type |
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| Erigeron tenuis Torr. & A.Gray | M. C. Leavenworth | — | United States of America | Louisiana | — |
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| Solidago drummondii Torr. & A.Gray | M. C. Leavenworth s.n. | s.d. | United States of America | Louisiana | type |
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| Euthamia leptocephala (Torr. & A.Gray) Greene | M. C. Leavenworth s.n. | s.d. | United States of America | Louisiana | not a type |
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| Psoralea digitata Nutt. ex Torr. & A.Gray | M. C. Leavenworth s.n. | s.d. | United States of America | — | syntype |
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| Amphianthus pusillus Torr. | M. C. Leavenworth s.n. | s.d. | United States of America | — | holotype |
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| Desmodium laevigatum (Nutt.) DC. | M. C. Leavenworth s.n. | — | United States of America | Florida | — |
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| Sagittaria graminea Michx. | M. C. Leavenworth s.n. | 1838 | United States of America | — | — |
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| Campylocera leptocarpa Nutt. | M. C. Leavenworth s.n. | s.d. | United States of America | Arkansas | — | |||||
| Eustachys petraea (Sw.) Desv. | M. C. Leavenworth s.n. | Aug & Sept | United States of America | Florida | — |
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| Solidago amplexicaulis Torr. & A.Gray | M. C. Leavenworth s.n. | s.d. | United States of America | Louisiana | type |
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| Solidago amplexicaulis Torr. & A.Gray | M. C. Leavenworth s.n. | s.d. | United States of America | Louisiana | type |
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