Displaying 1 - 75 out of 125 Object(s)

Taxon Collector Date Country State/Province Locality Type Status Barcode
Tridax mexicana A.M.Powell A. M. Powell 757 18 Aug 1961 Mexico Guerrero Acapulco, east side of city isotype 274222 Tridax mexicana A.M.Powell
Perityle turneri A.M.Powell A. M. Powell 1858 02 Apr 1970 Mexico Chihuahua 3.4 miles east of El… isotype 231077 Perityle turneri A.M.Powell
Quercus hinckleyi C.H.Müll. A. M. Powell 2800 01 Nov 1974 United States of America Texas Presidio Co. Ca. 50 yards… — 24061 Quercus hinckleyi C.H.Müll.
Flaveria brownii A.M.Powell A. M. Powell 2802 30 Dec 1974 United States of America Texas San Patricio Co. Port Aransas,… isotype 169329 Flaveria brownii A.M.Powell
Penstemon ambiguus Torr. A. M. Powell 2848 10 Jun 1976 United States of America Texas Hudspeth Co. White gypsum dunes,… — 569751 Penstemon ambiguus Torr.
Selinocarpus gypsophilus B.A.Fowler A. M. Powell 2105 25 May 1971 Mexico Chihuahua Ca. 15 miles southwest of… isotype 342152 Selinocarpus gypsophilus B.A.Fowler
Perityle warnockii A.M.Powell A. M. Powell 1311 11 Oct 1964 United States of America Texas Val Verde Co. Ca. 40-50… isotype 231047 Perityle warnockii A.M.Powell
Perityle fosteri A.M.Powell A. M. Powell 3365 03 Jul 1978 United States of America Texas Culberson Co. Apache Mts., Panther… isotype 231040 Perityle fosteri A.M.Powell
Tridax coronopifolia (Kunth) Hemsl. A. M. Powell 645 12 Aug 1961 Mexico Veracruz Along route 150, 7 miles… — 433225
Malacothrix glabrata (A.Gray ex D.C. Eaton) A.Gray A. M. Powell 1765 24 Mar 1970 Mexico Baja California 18 mi S of Bahía… — 368167
Machaeranthera pinnatifida (Hook.) Shinners A. M. Powell 1757 24 Mar 1970 Mexico Baja California 18 mi S of Bahía… — 368148
Chaenactis stevioides Hook. & Arn. A. M. Powell 1800 25 Mar 1970 Mexico Baja California Ca. 27 miles W of… — 366850
Hofmeisteria fasciculata (Benth.) Walp. A. M. Powell 1747 23 Mar 1970 Mexico Baja California 24 mi S of Puertecitos — 422520
Layia glandulosa (Hook.) Hook. & Arn. A. M. Powell 1806 26 Mar 1970 Mexico Baja California About 10 mi NE of… — 423164 Layia glandulosa (Hook.) Hook. & Arn.
Brickellia A. M. Powell 1805a 25 Mar 1970 Mexico Baja California 4 mi S of Bahia… — 363652
Malperia tenuis S.Watson A. M. Powell 1725 23 Mar 1970 Mexico Baja California 16 mi S San Felipe — 368171
Ambrosia dumosa (A.Gray) W.W.Payne A. M. Powell 1735 23 Mar 1970 Mexico Baja California 16 mi S San Felipe — 359855
Peucephyllum schottii A.Gray A. M. Powell 1738 23 Mar 1970 Mexico Baja California 30 mi S of San… — 426269
Nicolletia trifida Rydb. A. M. Powell 1739 23 Mar 1970 Mexico Baja California 30 mi S of San… — 425499
Palafoxia arida B.L.Turner & M.I.Morris A. M. Powell 1730 23 Mar 1970 Mexico Baja California 16 mi S San Felipe — 425632
Palafoxia arida B.L.Turner & M.I.Morris A. M. Powell 1705 22 Mar 1970 Mexico Baja California 41.6 miles S of Mexicali — 425630
Ambrosia magdalenae (Brandegee) W.W.Payne A. M. Powell 1769 24 Mar 1970 Mexico Baja California Intersection of main road down… — 359887
Ambrosia chenopodiifolia (Benth.) W.W.Payne A. M. Powell 1816 26 Mar 1970 Mexico Baja California 10 mi NW of El… — 359761
Ambrosia ambrosioides (Cav.) Payne A. M. Powell 1766 24 Mar 1970 Mexico Baja California 18 mi S of Bahía… — 359683
Ambrosia ilicifolia (A.Gray) W.W.Payne A. M. Powell 1751 23 Mar 1970 Mexico Baja California About 10 mi S of… — 359876
Palafoxia arida B.L.Turner & M.I.Morris A. M. Powell 1818 27 Mar 1970 Mexico Baja California Sur 25 mi S of El… — 425633
Ambrosia ambrosioides (Cav.) Payne A. M. Powell 1838 29 Mar 1970 Mexico Baja California Sur 11 mi W Loreto and… — 359684
Sartwellia puberula Rydb. A. M. Powell 2548 19 Aug 1973 Mexico Coahuila 0.5 mi S of Estacion… — 426812
Haploesthes robusta I.M.Johnst. A. M. Powell 2619 23 Aug 1973 Mexico Coahuila Ca. 3-4 mi SW of… — 367888
Flaveria A. M. Powell 2611 22 Aug 1973 Mexico Coahuila 39 miles N of San… — 367712
Flaveria oppositifolia (DC.) Rydb. A. M. Powell 2710 21 May 1974 Mexico Coahuila 3 mi NW of Nadadores — 417809 Flaveria oppositifolia (DC.) Rydb.
Viguiera stenoloba S.F.Blake A. M. Powell 2692 20 May 1974 Mexico Coahuila Mountain pass, 33 mi NE… — 434819
Tridax dubia Rose A. M. Powell 897 25 Aug 1961 Mexico Nayarit San Blas, Nay. — 433228
Tridax procumbens L. A. M. Powell 898 25 Aug 1961 Mexico Nayarit San Blas, Nay. — 433270
Tridax coronopifolia (Kunth) Hemsl. A. M. Powell 590A 7 Aug 1961 Mexico México Along route 57, 51 miles… — 433190
Tridax coronopifolia (Kunth) Hemsl. A. M. Powell 590 7 Aug 1961 Mexico México Along route 57, 51 miles… — 433222
Sartwellia mexicana A.Gray ex S.Watson A. M. Powell 2592 21 Aug 1973 Mexico Zacatecas 55 mi N of junction… — 426807
Flaveria oppositifolia (DC.) Rydb. A. M. Powell 2593 21 Aug 1973 Mexico Zacatecas 55 mi N of junction… — 417810
Dalea formosa Torr. A. M. Powell 3070 25 Mar 1977 United States of America Texas Val Verde Co. Langtry. — 01269570 Dalea formosa Torr.
Dalea formosa Torr. A. M. Powell 3071 25 Mar 1977 United States of America Texas Terrell Co. hills 3 mi… — 01269571 Dalea formosa Torr.
Dalea formosa Torr. A. M. Powell 3067 21 Mar 1977 United States of America Texas Terrell Co. 12 mi E… — 01269574 Dalea formosa Torr.
Dalea formosa Torr. A. M. Powell 1561 10 Apr 1968 United States of America Texas Hudspeth Co. ca 5 mi… — 01269622 Dalea formosa Torr.
Dalea formosa Torr. A. M. Powell 3076 02 Apr 1977 United States of America Texas Brewster Co. ca 9 mi… — 01269625 Dalea formosa Torr.
Dalea frutescens A.Gray A. M. Powell 2454 12 Sep 1972 United States of America Texas Brewster Co. ca 13 mi… — 01269678 Dalea frutescens A.Gray
Errazurizia megacarpa (S.Watson) I.M.Johnst. A. M. Powell 1727 23 Mar 1970 Mexico Baja California 16 miles S of San… — 01306769
Marina parryi (Torr. & A.Gray) Barneby A. M. Powell 1746 23 Mar 1970 Mexico Baja California 24 miles S of Puertecitos — 01307337
Calycoseris wrightii A.Gray A. M. Powell 1761 24 March 1970 Mexico Baja California 18 miles S of Bahia… — 2030701 Calycoseris wrightii A.Gray
Heuchera wellsiae R.A.Folk A. M. Powell 1860 02 Apr 1970 Mexico Durango 3.4 miles E of El… holotype 02497211 Heuchera wellsiae R.A.Folk
Perityle rupestris (A.Gray) Shinners A. M. Powell 1555 23 Sep 1967 United States of America Texas Brewster Co. rock bluffs, above… — 3128149 Perityle rupestris (A.Gray) Shinners
Perityle rupestris (A.Gray) Shinners A. M. Powell 1228 06 Jun 1964 United States of America Texas Jeff Davis Co. ca. 2… — 3128168 Perityle rupestris (A.Gray) Shinners
Perityle rupestris (A.Gray) Shinners A. M. Powell 1559 30 Sep 1967 United States of America Texas Jeff Davis Co. bluffs, 15… — 3128169 Perityle rupestris (A.Gray) Shinners
Perityle staurophylla (Barneby) Shinners A. M. Powell 1276 28 Aug 1964 United States of America New Mexico Otero Co. ca 1.5 mi.… — 03128214 Perityle staurophylla (Barneby) Shinners
Perityle tenella (M.E.Jones) J.F.Macbr. A. M. Powell 1267 31 Jul 1964 United States of America Utah Washington Co. ca. 1/2 to… — 3128226 Perityle tenella (M.E.Jones) J.F.Macbr.
Nerisyrenia linearifolia (S.Watson) Greene A. M. Powell 2354 14 Jun 1972 United States of America Texas Ward Co. ca 6 mi… — 3187910 Nerisyrenia linearifolia (S.Watson) Greene
Draba cuneifolia Nutt. var. cuneifolia A. M. Powell 1312 21 Jan 1965 United States of America Texas Presidio Co. Near spring in… — 3200968 Draba cuneifolia Nutt. var. cuneifolia
Draba cuneifolia Nutt. A. M. Powell 6506 29 Mar 2005 United States of America Texas Brewster Co. ca 9 mi… — 03200987 Draba cuneifolia Nutt.
Calylophus A. M. Powell 2359 14 Jun 1972 United States of America Texas Ward Co. ca 6 mi… — 03169391 Calylophus
Tiquilia hispidissima (Torr. & A.Gray) A.T.Richardson A. M. Powell 2355 14 Jun 1972 United States of America Texas Ward Co. ca 6 mi… — 3249572 Tiquilia hispidissima (Torr. & A.Gray) A.T.Richardson
Gaura A. M. Powell 2360 14 Jun 1972 United States of America Texas Ward Co. ca 6 mi… — 3319029 Gaura
Abronia angustifolia Greene A. M. Powell 2846 10 Jun 1976 United States of America Texas Hudspeth Co. White gypsum dunes,… — 3370285 Abronia angustifolia Greene
Mirabilis multiflora (Torr.) A.Gray A. M. Powell 3004 12 Jul 1976 United States of America Texas El Paso Co. south end… — 3377930 Mirabilis multiflora (Torr.) A.Gray
Asclepias subverticillata (A.Gray) Vail A. M. Powell 3002 12 Jul 1976 United States of America Texas El Paso Co. south end… — 3528784 Asclepias subverticillata (A.Gray) Vail
Mentzelia humilis (A.Gray) J.Darl. A. M. Powell 2132 23 Jun 1971 United States of America Texas Culberson Co. gyp hills 35… — 3599908 Mentzelia humilis (A.Gray) J.Darl.
Mentzelia mexicana H.J.Thomps. & Zavort. A. M. Powell 3026 16 Aug 1976 United States of America Texas Brewster Co. roadcut in the… — 3600217 Mentzelia mexicana H.J.Thomps. & Zavort.
Trianthema portulacastrum L. A. M. Powell 6001 12 Aug 1993 United States of America Texas Presidio Co. Roadside in drainage,… — 3871962 Trianthema portulacastrum L.
Batesimalva violacea (Rose) Fryxell A. M. Powell 3632 19 Sep 1981 United States of America Texas Brewster Co. Big Bend Nat'l… — 03874184 Batesimalva violacea (Rose) Fryxell
Opuntia macrocentra Engelm. A. M. Powell 6022 04 Feb 1994 United States of America Texas Presidio Co. Trans-Pecos, ca. 30… — 03861490 Opuntia macrocentra Engelm.
Sphaeralcea A. M. Powell 2353 14 Jun 1972 United States of America Texas Ward Co. low gypsum ridges… — 3988547 Sphaeralcea
Amsonia longiflora Torr. A. M. Powell 2931 23 Jun 1976 United States of America Texas Hudspeth Co. Mayfield Canyon, S… — 4160898 Amsonia longiflora Torr.
Forestiera pubescens Nutt. A. M. Powell 2851 11 Jun 1976 United States of America Texas Hudspeth Co. saline-gypsum flats, near… — 2498726 Forestiera pubescens Nutt.
Quercus pungens Liebm. A. M. Powell 5772 12 Oct 1991 United States of America Texas Hudspeth Co. Eagle Mountains, WNW… — 1465764 Quercus pungens Liebm.
Melampodium hispidum Kunth A. M. Powell 1546 19 Aug 1967 United States of America Texas Jeff Davis Co. along creek… — 3079543 Melampodium hispidum Kunth
Flaveria chlorifolia A.Gray A. M. Powell 2799 27 Oct 1974 United States of America Texas Reeves Co. Beside a concrete… — 2872103 Flaveria chlorifolia A.Gray
Eysenhardtia texana Scheele A. M. Powell 3007 01 Aug 1976 United States of America Texas Val Verde Co. hillsides, ca.… — 2569068 Eysenhardtia texana Scheele
Agropyron Gaertn. A. M. Powell 5871 23 Jul 1992 United States of America New Mexico Otero Co. Near Cloudcroft. — 1554443 Agropyron Gaertn.