Displaying 51 - 125 out of 161 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | ||
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| Euphorbia pilosula Engelm. ex Boiss. | J. Gregg 792 | 1848-1849 | Mexico | — | Tiristirina | isotype | 263272 |
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| Euphorbia Lanj. | J. Gregg | 29 May 1847 | Mexico | — | Gemalho (spelling?) | — | 263236 |
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| Baileya multiradiata Harv. & A.Gray | J. Gregg s.n. | 21 Apr 1847 & 28 Apr 1847 | Mexico | — | Valley of Conchos (21 Apr… | type | 162446 |
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| Anisacanthus insignis A.Gray | J. Gregg 504 | 02 Apr 1847 | Mexico | — | Valley of Río Conchos (below… | lectotype | 311945 |
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| Helenium ooclinium A.Gray | J. Gregg 27 | 11 May 1847 | Mexico | — | Valley of Nazos, Bolson de… | isotype | 179038 |
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| Phoradendron lanceolatum Engelm. ex A.Gray | J. Gregg s.n. | 11 Feb 1847 | Mexico | — | Near Rinconada | isotype | 285297 |
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| Atriplex greggii S.Watson | J. Gregg 462 | 1848-1849 | Mexico | — | Cerro Bavor {?illegible] | isotype | 324281 |
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| Solanum elaeagnifolium Cav. | J. Gregg s.n. | May 11/47 | Mexico | — | In elsewhere for quality, or… | — | 00751082 |
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| Solanum elaeagnifolium Cav. | J. Gregg s.n. | April 10/1847 | Mexico | — | Indonifie, Stevnudatery - Castañuela (1… | — | 00751083 |
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| Solanum triquetrum Cav. | J. Gregg s.n. | 10 May 1847 | Mexico | — | San Sebastian, in valley of… | — | 00820786 |
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| Ptelea parvifolia A.Gray ex Hemsl. | J. Gregg s.n. | 22 May 1847 | Mexico | Coahuila | Battlefield near Buenavista | syntype | 887921 |
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| Teloxys cornuta Torr. | J. Gregg 390 | 31 Aug 1848 | Mexico | Coahuila | Near Saltillo | isosyntype | 990751 |
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| Senna bauhinioides (A.Gray) H.S.Irwin & Barneby | J. Gregg s.n. | s.d. | Mexico | — | Monterrey. | — | 554806 |
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| Senna demissa var. radicans (H.S.Irwin & Barneby) H.S.Irwin & Barneby | J. Gregg 244 | 1848-1849 | Mexico | Coahuila | Saltillo. | — | 554917 |
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| Mimosa texana (A.Gray) Small var. texana | J. Gregg s.n. | 09 Apr 1847 | Mexico | Coahuila | W of Saltillo | — | 551457 |
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| Juglans rupestris Engelm. | J. Gregg s.n. | 03 Jul 1852 | Mexico | — | [country Mexico?] | probable syntype | 1583809 |
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| Erioneuron pilosum (Buckley) Nash var. pilosum | J. Gregg 205 | 1848 - 1849 | Mexico | — | Saltillo. | — | 1690171 |
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| Astragalus mollissimus var. earlei (Greene ex Rydb.) Tidestr. | J. Gregg s.n. | April 28 | Mexico | Chihuahua | Near Chihuahua | — | 01268129 | ||
| Astragalus wootonii E.Sheld. var. wootonii | J. Gregg s.n. | s.d. | Mexico | Chihuahua | SE of Chihuahua | — | 01268518 | ||
| Astragalus wootonii E.Sheld. var. wootonii | J. Gregg s.n. | 28 Apr 1847 | Mexico | Chihuahua | SE of Chihuahua | — | 01268506 | ||
| Dalea bicolor var. argyrea (A.Gray) Barneby | J. Gregg s.n. | 19 May 1887 | Mexico | — | Plain near Castamuela | — | 01278045 | ||
| Dalea lutea (Cav.) Willd. var. lutea | J. Gregg 388 | 1848 - 1849 | Mexico | — | — | 01279726 |
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| Dalea pogonathera A.Gray var. pogonathera | J. Gregg 461 | 1848 - 1849 | Mexico | — | Saltillo | — | 01305271 | ||
| Chamaesaracha sordida (Dunal) A.Gray | J. Gregg s.n. | 05 Feb 1847 | Mexico | Nuevo León | Ramparts, on "Bishop's Hill". Near… | — | 1423460 |
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| Mimosa texana (A.Gray) Small var. texana | J. Gregg s.n. | 08 May 1847 | Mexico | Durango | Cadena ? | — | 01452824 | ||
| Lippia wrightii var. macrostachya Torr. | J. Gregg [822] | 28 May 1847 | Mexico | Nuevo León | West of Cerralbo | lectotype | 1365331 |
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| Setaria parviflora (Poir.) Kerguélen | J. Gregg s.n. | 29 May 1847 | Mexico | — | Near Cerralbo [Cerralvo]. | — | 1815973 |
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| Symphyotrichum subulatum (Michx.) G.L.Nesom | J. Gregg | 22 Mar 1847 | — | — | [No locality data on label;… | — | 1869420 |
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| Berlandiera lyrata Benth. | J. Gregg s.n. | 23 Apr 1847 and 28 Apr 1847 | Mexico | Chihuahua | SE of Chihuahua | — | 1924520 |
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| Dyssodia micropoides (DC.) Loes. | J. Gregg s.n. | 05 Feb 1847 | United States of America | California | Bishop's Hill, near Monterey. | — | 2070354 |
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| Chara contraria A.Braun ex Kütz. | J. Gregg s.n. | 08 May 1847 | Mexico | — | Cadena | — | 02012680 |
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| Erigeron spinosus Benth. | J. Gregg 266 | 1848 - 1849 | Mexico | Coahuila | Saltillo | — | 2096027 |
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| Lantana macropoda Torr. | J. Gregg s.n. | May 1847 | Mexico | — | possible syntype | 1911826 |
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| Polypogon viridis (Gouan) Breistr. | J. Gregg s.n. | 20 May 1847 | Mexico | — | San Juan de la Vaqueria. | — | 02212732 |
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| Gaillardia pinnatifida Torr. | J. Gregg s.n. | 29 Apr 1847 | Unknown | — | Rich valley near San Pablo | — | 02240222 |
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| Boerhavia linearifolia A.Gray | J. Gregg 110 | 1848 - 1849 | Mexico | Nuevo León | Monterrey | — | 02361439 |
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| Arbutus tessellata P.D.Sørensen | J. Gregg 629 | 1848-49 | Mexico | Hidalgo | Mineral del Monte. | — | 1874922 |
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| Castela erecta Turpin | J. Gregg | May 4/47 | — | — | S.W. of Quapiquilla | — | 2515803 |
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| Rhus microphylla Engelm. | J. Gregg s.n. | April 16/47 | — | — | 10 X from Saltillo to… | — | 2555574 |
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| Lesquerella fendleri (A.Gray) S.Watson | J. Gregg s.n. | Feb 1847 | United States of America | Texas | Jim Hogg Co. Aguanueva | — | 3186410 |
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| Nerisyrenia camporum (A.Gray) Greene | J. Gregg s.n. | 08 May 1847 | Unknown | — | Cadena | — | 3187889 |
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| Carlowrightia torreyana Wassh. | J. Gregg s.n. | 28 Jan 1847 | — | — | Monterey | — | 3601485 |
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| Giliastrum acerosum (A.Gray) Rydb. | J. Gregg s.n. | 22 May 1847 | Mexico | Nuevo León | Battlefield, near Buenavista | — | 3299948 |
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| Asclepias linearis Scheele | J. Gregg s.n. | May 1847 | United States of America | Texas | west of Mata-Moros | — | 03517413 |
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| Amoreuxia wrightii A.Gray | J. Gregg s.n. | 15 Oct 1852 | United States of America | Texas | Val Verde Co. mouth of… | — | 3938242 |
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| Hermannia texana A.Gray | J. Gregg 1- | 04 May 1847 | United States of America | Texas | Smith Co. "Walnut Grove" | — | 3878452 |
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| Hopia obtusa (Kunth) Zuloaga & Morrone | J. Gregg s.n. | 15 May 1847 | United States of America | Texas | — | 1728753 |
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| Nerisyrenia camporum (A.Gray) Greene | J. Gregg s.n. | 12 Apr 1847 | United States of America | Texas | west of Parras | — | 3187836 |
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| Leucophyllum frutescens (Berland.) I.M.Johnst. | J. Gregg s.n. | s.d. | United States of America | Texas | — | 3284485 |
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| Muhlenbergia utilis (Torr.) Hitchc. | J. Gregg s.n. | 16 May 1847 | United States of America | Texas | Pecos | — | 1759976 |
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| Calliandra eriophylla Benth. var. eriophylla | J. Gregg s.n. | 28 Apr 1847 | Mexico | Chihuahua | Chihuahua Mun. Near Chihuahua | — | 00549227 |
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| Engelmannia pinnatifida Nutt. | J. Gregg 64 | 22 May 1847 | Mexico | México | Tultitlán Mun. Buenavista. | — | 2074764 |
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| Mimosa malacophylla A.Gray | J. Gregg s.n. | 27 May 1847 | Mexico | Nuevo León | Monterrey Mun. Valley NE of… | isosyntype | 2566 |
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| Cassia greggii A.Gray | J. Gregg s.n. | 25 May 1847&28 Jul 1847 | Mexico | Nuevo León | Monterrey Mun. W of Rinconada,… | isotype | 3634 |
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| Juniperus flaccida Schltdl. var. flaccida | J. Gregg 106 | 1848-1849 | Mexico | Coahuila | Saltillo Mun. Saltillo | — | 345649 |
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| Mimosa zygophylla Benth. | J. Gregg s.n. | 09 Apr 1847 | Mexico | Coahuila | Saltillo Mun. | isosyntype | 2652 |
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| Coreopsis tinctoria var. similis (F.E.Boynton) H.M.Parker ex E.B.Sm. | J. Gregg s.n. | 05 Jun 1847 | Mexico | — | West of Matamoros. | — | 2066920 |
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| Tetranthera glaucescens var. subsolitaria Meisn. | J. Gregg 639 | 1848-1849 | Mexico | Hidalgo | Real del Monte | syntype | 259815 | ||
| Atriplex canescens (Pursh) Nutt. | J. Gregg s.n. | 07 May 1847 | United States of America | New Mexico | Near Andabrazo Cr. XX from… | — | 3340016 |
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| Yucca elata (Engelm.) Engelm. | J. Gregg s.n. | 30 Apr 1847 | United States of America | New Mexico | Palmilla | — | 3574579 |
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| Amoreuxia wrightii A.Gray | J. Gregg s.n. | s.d. | United States of America | New Mexico | Rio Grande | — | 3938239 |
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| Asclepias asperula (Decne.) Woodson | J. Gregg s.n. | 23 Apr 1847 - 29 Apr 1847 | — | — | dry valley near Ojito | — | 3493071 |
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| Sargentia greggii S.Watson | J. Gregg s.n. | 28 May 1847 | Mexico | — | East of Papagallos. | not a type | 00067155 |
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| Sargentia greggii S.Watson | J. Gregg s.n. | 07 Feb 1847 | Mexico | — | "Walnut Grove, near Monterey." | isolectotype | 00067161 |
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| Astragalus micranthus var. seatonii (M.E.Jones) Barneby | J. Gregg s.n. | s.d. | Mexico | — | — | 01268119 |
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| Nitella tenuissima (Desv.) Kütz. | J. Gregg s.n. | 04 Feb 1847 | Mexico | — | near Monterey | — | 01192481 |
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| Nitella tenuissima (Desv.) Kütz. | J. Gregg s.n. | 05 Feb 1847 | Mexico | — | from river near Monterey | — | 02022938 |
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| Chara vulgaris L. | J. Gregg s.n. | 09 Feb 1847 | Mexico | — | from river of Monterey | — | 02019850 |
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| Malva involucrata Torr. & A.Gray | J. Gregg s.n. | 19 May 1847 | Mexico | — | From valley near Patos | possible type | 221808 |
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| Solanum erianthum D.Don | J. Gregg s.n. | Jan. 28/47 | Mexico | — | Yev?ra de San Pedro (from… | — | 00751164 |
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| Hiraea sericea Engelm. | J. Gregg s.n. | 09 May 1847 | Mexico | — | Plain west of Mapimí | isosyntype | 71308 |
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| Dermatophyllum secundiflorum (Ortega) Gandhi & Reveal | J. Gregg s.n. | 23 Jan 1847 - 11 Feb 1847 | — | — | between Monterey + Rinconada | — | 4267550 |
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| Simsia subaristata A.Gray | J. Gregg 47 | 06 Feb 1847 | Mexico | — | Bishop's Hill near Monterrey | isotype | 259616 |
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| Solanum hjertingii Hawkes | J. Gregg 420 | 1848 - 1849 | Mexico | — | San Antonio de las Alanzanas. | — | 00751608 |
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| Acacia constricta Benth. | J. Gregg s.n. | 11 Apr 1847 | Mexico | Coahuila | Rocky highland, west of Castañuela | probable syntype | 1433 |
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