Displaying 26 - 50 out of 125 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Draba cuneifolia Nutt. var. cuneifolia | A. M. Powell 1312 | 21 Jan 1965 | United States of America | Texas | Presidio Co. Near spring in… | — |
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| Errazurizia megacarpa (S.Watson) I.M.Johnst. | A. M. Powell 1727 | 23 Mar 1970 | Mexico | Baja California | 16 miles S of San… | — | ||||
| Eysenhardtia texana Scheele | A. M. Powell 3007 | 01 Aug 1976 | United States of America | Texas | Val Verde Co. hillsides, ca.… | — |
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| Flaveria anomala B.L.Rob. | A. M. Powell 2568 | 20 Aug 1973 | Mexico | San Luis Potosí | Matehuala Mun. 1 mi N… | — |
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| Flaveria anomala B.L.Rob. | A. M. Powell 2559 | 20 Aug 1973 | Mexico | Nuevo León | Galeana Mun. 7.5 mi S… | — |
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| Flaveria anomala B.L.Rob. | A. M. Powell 2579 | 21 Aug 1973 | Mexico | San Luis Potosí | Matehuala Mun. 28 mi S… | — |
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| Flaveria brownii A.M.Powell | A. M. Powell 2802 | 30 Dec 1974 | United States of America | Texas | San Patricio Co. Port Aransas,… | isotype |
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| Flaveria brownii A.M.Powell | A. M. Powell 2802 | 30 Dec 1974 | United States of America | Texas | San Patricio Co. Port Aransas,… | — |
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| Flaveria chlorifolia A.Gray | A. M. Powell 2799 | 27 Oct 1974 | United States of America | Texas | Reeves Co. Beside a concrete… | — |
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| Flaveria chlorifolia A.Gray | A. M. Powell 3036 | 18 Sep 1976 | United States of America | Texas | Culberson Co. Rustler Springs at… | — |
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| Flaveria Juss. | A. M. Powell 2611 | 22 Aug 1973 | Mexico | Coahuila | 39 miles N of San… | — |
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| Flaveria oppositifolia (DC.) Rydb. | A. M. Powell 2710 | 21 May 1974 | Mexico | Coahuila | 3 mi NW of Nadadores | — |
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| Flaveria oppositifolia (DC.) Rydb. | A. M. Powell 2551 | 20 Aug 1973 | Mexico | Coahuila | Arteaga Mun. Low places at… | — |
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| Flaveria oppositifolia (DC.) Rydb. | A. M. Powell 2593 | 21 Aug 1973 | Mexico | Zacatecas | 55 mi N of junction… | — |
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| Flaveria trinervia (Spreng.) C.Mohr | A. M. Powell 3037 | 04 Sep 1976 | United States of America | Texas | Culberson Co. Rustler Springs at… | — |
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| Forestiera pubescens Nutt. | A. M. Powell 2851 | 11 Jun 1976 | United States of America | Texas | Hudspeth Co. saline-gypsum flats, near… | — |
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| Gaura | A. M. Powell 2360 | 14 Jun 1972 | United States of America | Texas | Ward Co. ca 6 mi… | — |
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| Haploësthes greggii A.Gray var. greggii | A. M. Powell 2787 | 19 Jul 1974 | United States of America | Texas | Crosby Co. Near roadside, just… | — |
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| Haploesthes greggii var. texana (J.M.Coult.) I.M.Johnst. | A. M. Powell 2777 | 24 Jun 1974 | United States of America | Texas | Crane Co. Gypseous Flat, on… | — |
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| Haploesthes robusta I.M.Johnst. | A. M. Powell 2619 | 23 Aug 1973 | Mexico | Coahuila | Ca. 3-4 mi SW of… | — |
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| Heuchera wellsiae R.A.Folk | A. M. Powell 1860 | 02 Apr 1970 | Mexico | Durango | 3.4 miles E of El… | holotype |
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| Hofmeisteria fasciculata (Benth.) Walp. | A. M. Powell 1747 | 23 Mar 1970 | Mexico | Baja California | 24 mi S of Puertecitos | — |
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| Hymenoxys linearifolia Hook. | A. M. Powell 1872 | 16 Apr 1970 | United States of America | Texas | Ward Co. 2 miles W… | — |
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| Isocoma veneta (Kunth) Greene | A. M. Powell 2788 | 24 Aug 1974 | United States of America | Texas | Culberson Co. roadside, Hwy 54,… | — |
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| Layia glandulosa (Hook.) Hook. & Arn. | A. M. Powell 1806 | 26 Mar 1970 | Mexico | Baja California | About 10 mi NE of… | — |
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