Displaying 1 - 50 out of 161 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | ||
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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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| Acacia constricta Benth. | J. Gregg s.n. | 11 Apr 1847 | Mexico | Coahuila | Rocky highland, west of Castañuela | — | 1911757 |
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| Acacia greggii A.Gray | J. Gregg s.n. | 10 Apr 1847 | Mexico | — | W of Los Patos, dry… | possible isotype | 1474 |
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| Agrostis canina L. | J. Gregg s.n. | 15 Apr 1849 | United States of America | Colorado | Valley of [illegible] | — | 1554558 |
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| Alnus oblongifolia Torr. | J. Gregg 611 | 1848-1849 | Mexico | — | — | 253883 |
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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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| Amoreuxia wrightii A.Gray | J. Gregg s.n. | s.d. | United States of America | New Mexico | Rio Grande | — | 3938239 |
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| Amoreuxia wrightii A.Gray | J. Gregg s.n. | 29 May 1847 | — | — | West of Cerralbo. | — | 3938241 |
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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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| Arbutus tessellata P.D.Sørensen | J. Gregg 629 | 1848-49 | Mexico | Hidalgo | Mineral del Monte. | — | 1874922 |
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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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| Asclepias linearis Scheele | J. Gregg s.n. | May 1847 | United States of America | Texas | west of Mata-Moros | — | 03517413 |
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| Astragalus micranthus var. seatonii (M.E.Jones) Barneby | J. Gregg s.n. | s.d. | Mexico | — | — | 01268119 |
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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 | ||
| Astrolepis integerrima (Hook.) D.M.Benham & Windham | J. Gregg 297 | 1848 - 1849 | Mexico | — | Buenavista | — | 3900331 |
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| 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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| Atriplex canescens (Pursh) Nutt. | J. Gregg | 11 Apr 1847 | Mexico | — | Plains east of Parras. Abundant… | — | 3340015 |
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| Atriplex greggii S.Watson | J. Gregg 462 | 1848-1849 | Mexico | — | Cerro Bavor {?illegible] | isotype | 324281 |
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| Atriplex monilifera S.Watson | J. Gregg s.n. | 13 Apr 1847 | Mexico | Chihuahua | Bolton de Mapiri | isotype | 324291 |
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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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| Baileya pleniradiata Harv. & A.Gray | J. Gregg 37 | 11 May 1847 | Mexico | — | From valley of [Naz...], Hac.… | type | 162455 |
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| Baileya pleniradiata Harv. & A.Gray | J. Gregg 28 | 17 Apr 1847 | Mexico | — | Near Garalito | type | 162456 |
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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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| Boerhavia linearifolia A.Gray | J. Gregg 110 | 1848 - 1849 | Mexico | Nuevo León | Monterrey | — | 02361439 |
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| Bouteloua gracilis (Kunth) Lag. ex Griffiths | J. Gregg 370 | 1848 - 1849 | Mexico | — | — | 1630565 |
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| Caesalpinia sessilifolia S.Watson | J. Gregg s.n. | 10 May 1847 | Mexico | — | Bolson de Mapimi | type | 22758 |
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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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| Capsicum annuum var. glabrisuculum (Dunal) Heiser & Pickersgill | J. Gregg s.n. | 28 May 1847 | Mexico | — | West of Cerralto | — | 1422243 |
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| Carex greggii Carey | J. Gregg s.n. | 22 Apr 1847 | — | — | Near San Pablo | possible type | 11433 |
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| Carlowrightia torreyana Wassh. | J. Gregg s.n. | 28 Jan 1847 | — | — | Monterey | — | 3601485 |
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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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| Castela erecta Turpin | J. Gregg | May 4/47 | — | — | S.W. of Quapiquilla | — | 2515803 |
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| 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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| Chara contraria A.Braun ex Kütz. | J. Gregg s.n. | 08 May 1847 | Mexico | — | Cadena | — | 02012680 |
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| Chara vulgaris L. | J. Gregg s.n. | 09 Feb 1847 | Mexico | — | from river of Monterey | — | 02019850 |
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| Chrysactinia mexicana A.Gray | J. Gregg s.n. | 22 May 1847 | Mexico | — | High ground near Buenavista | syntype | 163380 |
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| Chrysactinia mexicana A.Gray | J. Gregg s.n. | Apr 1847 | Mexico | Nuevo León | In valley west of Saltillo | syntype | 163381 |
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| Cladophora pithophoroides H.K.Phinney | J. Gregg s.n. | s.d. | Mexico | — | near Monterey | — | 02129889 |
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| Clavigera spinulosa A.Gray | J. Gregg s.n. | 28 Apr 1847 | Mexico | Chihuahua | High plain near Chihuahua | type | 167571 |
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| Condalia warnockii M.C.Johnst. var. warnockii | J. Gregg s.n. | 17 Apr 1847 | Mexico | — | Northwest of Mapimi | — | 546813 |
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| Cordia greggii Torr. | J. Gregg s.n. | 15 Apr 1847 & 07 May 1847 | Mexico | — | Chaparro de San Pedro &… | type | 335061 |
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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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| Dalea bicolor var. argyrea (A.Gray) Barneby | J. Gregg s.n. | 19 May 1887 | Mexico | — | Plain near Castamuela | — | 01278045 | ||
| Dalea greggii A.Gray | J. Gregg s.n. | 27 Mar 1847 | Mexico | Coahuila | Buenaventura. | isolectotype | 6996 |
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| Dalea greggii A.Gray | J. Gregg s.n. | Oct 1852 | Mexico | Chihuahua | not a type | 1287706 | |||
| 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 | ||
| Dermatophyllum secundiflorum (Ortega) Gandhi & Reveal | J. Gregg s.n. | 23 Jan 1847 - 11 Feb 1847 | — | — | between Monterey + Rinconada | — | 4267550 |
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