Displaying 3901 - 3921 out of 3921 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | ||
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| Machaeranthera tanacetifolia (Kunth) Nees | R. D. Worthington 14413 | 28 Jul 1986 | Mexico | Chihuahua | Along the New Mexico-Chihuahua border… | — | 424740 |
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| Melampodium strigosum Stuessy | R. D. Worthington 11149 | 21 Aug 1983 | Mexico | Durango | Canatlán Mun. 5.1 rd. mi… | — | 368221 |
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| Melampodium leucanthum Torr. & A.Gray | R. D. Worthington 9750 | 10 Apr 1983 | Mexico | Chihuahua | Praxedis G. Guerrero Mun. Sierra… | — | 368202 |
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| Machaeranthera tanacetifolia (Kunth) Nees | R. D. Worthington 11167 | 21 Aug 1983 | Mexico | Durango | Canatlán Mun. 2.1 rd. mi… | — | 368159 |
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| Machaeranthera pinnatifida (Hook.) Shinners | R. D. Worthington 14522 | 2 Aug 1986 | Mexico | Chihuahua | Juárez Mun. Sierra Juárez, S… | — | 368152 |
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| Lygodesmia ramosissima Greenm. | R. D. Worthington 10790 | 5 Jul 1983 | Mexico | Durango | Hidalgo Mun. 5.1 mi by… | — | 368117 |
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| Zexmenia lantanifolia | R. D. Worthington 8433 | 6 Jun 1982 | Mexico | Tamaulipas | Victoria Mun. Sierra Madre Oriental,… | — | 422832 |
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| Zexmenia brevifolia | R. D. Worthington 12519 | 26 Aug 1984 | Mexico | Chihuahua | Praxedis G. Guerrero Mun. Sierra… | — | 422827 |
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| Jaegeria hirta (Lag.) Less. | R. D. Worthington 9372 | 7 Jan 1983-8 Jan 1983 | Mexico | Sinaloa | Concordia Mun. Sierra Madre Occidental,… | — | 422776 |
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| Isocoma veneta (Kunth) Greene | R. D. Worthington 8489 | 6 Jun 1982 | Mexico | San Luis Potosí | Matehuala Mun. 50.6 rd. mi… | — | 422727 |
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| Parthenium incanum Kunth | R. D. Worthington 14521 | 2 Aug 1986 | Mexico | Chihuahua | Juárez Mun. Sierra Juárez, S… | — | 368403 |
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| Pectis angustifolia Torr. var. angustifolia | R. D. Worthington 14423 | 28 Jul 1986 | Mexico | Chihuahua | Along the New Mexico-Chihuahua border… | — | 425798 |
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| Melampodium cinereum DC. | R. D. Worthington 8324 | 2 Jun 1982 | Mexico | Coahuila | 12.7 rd. mi NNE of… | — | 424798 |
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| Perezia nana A.Gray | R. D. Worthington 13107 | 12 May 1985 | United States of America | New Mexico | Otero CO. Jarilla Mts. S… | — | 368435 |
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| Psilostrophe tagetina (Nutt.) Greene | R. D. Worthington 14391 | 27 Jul 1986 | Mexico | Chihuahua | 0.9 W of monument no.… | — | 368625 |
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| Psilostrophe tagetina (Nutt.) Greene | R. D. Worthington 14539 | 2 Aug 1986 | Mexico | Chihuahua | Juárez Mun. Sierra Juárez, S… | — | 368626 |
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| Sanvitalia abertii | R. D. Worthington 14509 | 2 Aug 1986 | Mexico | Chihuahua | Juárez Mun. Sierra de Juárez,… | — | 426736 |
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| Sanvitalia procumbens Lam. | R. D. Worthington 10807 | 5 Jul 1983 | Mexico | Durango | Rodeo Mun. 16.5 mi by… | — | 426776 |
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| Schkuhria pinnata var. virgata (La Llave) Heiser | R. D. Worthington 8867 | 19 Aug 1982 | Mexico | Durango | 2 km W of Otinapa | — | 426901 |
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| Schkuhria schkuhrioides (Link & Otto) Thell. | R. D. Worthington 8949 | 21 Aug 1982 | Mexico | Durango | Along hwy. 45 N of… | — | 426906 |
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| Symblepharis vaginata (Wilson) Wijk & Margad. | R. D. Worthington 34892 | 15 Jul 2007 | United States of America | New Mexico | Otero Co. Sacramento Mts., about… | — | 966450 |
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