Displaying 1 - 41 out of 41 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Solanum pubigerum Dunal | Dr. Halsted s.n. | May 1845 | Mexico | — | Pedregal Cojohuacan also Lava beds… | — |
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| Astragalus crassicarpus var. trichocalyx (Nutt.) Barneby | Dr. Halsted s.n. | 1845 | United States of America | Missouri | St. Louis | — |
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| Astianthus longifolius D.Don | Dr. Halsted s.n. | Jun 1848 | Mexico | — | At Nacional Bridge (Puente Nacional) | possible type |
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| Dalea sericea Lag. var. sericea | Dr. Halsted s.n. | 1848 | Mexico | — | Pyramid of Cholula | — |
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| Solanum subinerme Jacq. | Dr. Halsted s.n. | 1850 | Panama | — | — |
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| Conostegia speciosa Naudin | Dr. Halsted | 1850 | Panama | — | — |
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| Conostegia xalapensis (Bonpl.) D.Don ex DC. | Dr. Halsted | 1850 | Panama | — | — | |||||
| Conostegia xalapensis (Bonpl.) D.Don ex DC. | Dr. Halsted 13 | 1850 | Panama | — | — |
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| Astragalus orthanthus A.Gray | Dr. Halsted 19 | Nov 1863 | Mexico | Veracruz | Perote | holotype |
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| Mimosa albida Humb. & Bonpl. ex Willd. | Dr. Halsted s.n. | 19 Apr 1867 | Mexico | — | Encerro | — |
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| Melilotus albus Medik. | Dr. Halsted 20 | Jun 1891 | United States of America | New Jersey | Bound Brook | — |
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| Heuchera reglensis Rydb. | Dr. Halsted | — | Mexico | Hidalgo | Hacienda del Regla | holotype |
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| Chrysactinia mexicana A.Gray | Dr. Halsted s.n. | s.d. | Mexico | — | Ojo de Agua | syntype |
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| Penstemon barbatus var. torreyi (Benth.) A.Gray | Dr. Halsted 14 | s.d. | Mexico | — | Perote | — |
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| Heuchera halstedii Rydb. | Dr. Halsted s.n. | — | Mexico | Hidalgo | Growing at foot of Basalt… | holotype |
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| Asteraceae | Dr. Halsted s.n. | s.d. | Mexico | — | — | |||||
| Bahia ehrenbergii Sch.Bip. ex Rydb. | Dr. Halsted s.n. | s.d. | Mexico | — | — | |||||
| Desmanthus pringlei (Britton & Rose) F.J.Herm. | Dr. Halsted s.n. | s.d. | Mexico | — | — | |||||
| Mimosa angustissima Mill. | Dr. Halsted s.n. | s.d. | Mexico | — | — | |||||
| Leandra cornoides (Schltdl. & Cham.) Cogn. | Dr. Halsted s.n. | s.d. | Mexico | Veracruz | Camp near [Xalapa] | — |
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| Sanvitalia procumbens Lam. | Dr. Halsted s.n. | s.d. | Mexico | — | Pyramid of Cholula | — |
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| Acmella repens var. beccabunga (DC.) R.K.Jansen | Dr. Halsted s.n. | — | Mexico | Veracruz | Xalapa Mun. Camp near Jalapa | — | ||||
| Zapoteca portoricensis (Jacq.) H.M.Hern. subsp. portoricensis | Dr. Halsted s.n. | — | Mexico | Veracruz | Xalapa Mun. Camp near Jalapa | — | ||||
| Solanum dulcamaroides Poir. | Dr. Halsted s.n. | s.d. | Mexico | — | Chopultepec. | — |
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| Solanum pubigerum Dunal | Dr. Halsted s.n. | s.d. | Mexico | — | Near Ahuasco. | — |
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| Selaginella pilifera A.Braun | Dr. Halsted s.n. | s.d. | Mexico | — | — |
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| Baltimora geminata (Brandegee) Stuessy | Dr. Halsted s.n. | s.d. | Mexico | — | — |
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| Bursera graveolens (Kunth) Triana & Planch. | Dr. Halsted s.n. | s.d. | Mexico | México | Volcano of Toluca | — |
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| Govenia superba (Lex.) Lindl. | Dr. Halsted 16 | May 1st. | Mexico | — | Camp near Jalapa | — |
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| Pellaea ternifolia subsp. ternifolia | Dr. Halsted s.n. | s.d. | Mexico | — | Mountain of Teluco | — |
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| Solanum rostratum Dunal | Dr. Halsted s.n. | s.d. | Mexico | — | Tepe Aguales [or "Agualeo"] | — |
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| Calea ternifolia var. zacatechichi | Dr. Halsted s.n. | s.d. | Mexico | — | — | |||||
| Lobelia cordigera var. fatalis E.Wimm. | Dr. Halsted s.n. | s.d. | Mexico | — | type |
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| Artemisia mexicana Willd. ex Spreng. | Dr. Halsted s.n. | s.d. | Mexico | — | — |
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| Solanum houstonii Martyn | Dr. Halsted s.n. | s.d. | Mexico | — | Mountains of Toluca. | — |
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| Mimosa albida Humb. & Bonpl. ex Willd. | Dr. Halsted s.n. | s.d. | Mexico | — | — |
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| Astragalus mollissimus var. irolanus (M.E.Jones) Barneby | Dr. Halsted s.n. | s.d. | Mexico | — | — |
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| Astragalus wootonii var. candollianus E.Sheld. | Dr. Halsted 21 | s.d. | Mexico | — | Virreyes | — |
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| Dalea bicolor Humb. & Bonpl. ex Willd. var. bicolor | Dr. Halsted s.n. | s.d. | Mexico | — | — |
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| Erigeron fraternus Greene var. fraternus | Dr. Halsted s.n. | s.d. | Mexico | — | — |
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| Astragalus mollissimus var. irolanus (M.E.Jones) Barneby | Dr. Halsted s.n. | s.d. | Mexico | — | — |
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