Displaying 1 - 75 out of 143 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Abronia fragrans Nutt. ex Hook. | M. C. Wiegand 3170 | 02 Jun 1922 | United States of America | New Mexico | Santa Fe Co. 14 miles… | — |
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| Ambrosia deltoidea (Torr.) W.W.Payne | M. C. Wiegand 4447 | 02 May 1922 | United States of America | Arizona | Maricopa Co. Black Canyon road,… | — |
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| Amelanchier laevis Wiegand | M. C. Wiegand s.n. | 06 Mar 1908; 24 Jun 1911 | United States of America | Massachusetts | Norfolk Co. Aqueduct Bridge. | isotype |
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| Androsace septentrionalis L. | M. C. Wiegand 3962 | 29 May 1922 | United States of America | New Mexico | Santa Fe Co. Canyon Road… | — |
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| Anemone patens var. multifida Pritz. | M. C. Wiegand 3227 | 29 May 1922 | United States of America | New Mexico | Santa Fe Co. Canyon road… | — |
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| Antennaria marginata Greene | M. C. Wiegand 4433 | 29 May 1922 | United States of America | New Mexico | Santa Fe Co. Canyon Road… | — |
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| Antennaria parvifolia Nutt. | M. C. Wiegand 4427 | 13 Jun 1922 | United States of America | Colorado | Boulder Co. Bog, 17 mi… | — |
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| Antennaria parvifolia Nutt. | M. C. Wiegand 7849 | 24 Jun 1949 | United States of America | New Mexico | Taos Co. North side of… | — |
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| Aphanostephus ramosissimus var. humilis (Benth.) B.A.Birdsong | M. C. Wiegand 4370 | 25 May 1922 | United States of America | New Mexico | Socorro Co. 3 mi N… | — |
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| Arabis fendleri (S.Watson) Greene | M. C. Wiegand 3386 | 27 Apr 1922 | United States of America | Arizona | Pinal Co. Mount Lemmon road,… | — |
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| Arctostaphylos uva-ursi (L.) Spreng. | M. C. Wiegand 3952 | 08 Jun 1922 | United States of America | Colorado | El Paso Co. North Cheyenne… | — |
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| Arenaria fendleri A.Gray var. fendleri | M. C. Wiegand 3192 | 11 Jun 1922 | United States of America | Colorado | El Paso Co. 10 miles… | — |
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| Aristida purpurea var. fendleriana (Steud.) Vasey | M. C. Wiegand 3010 | 23 May 1922 | United States of America | Arizona | Apache Co. Holbrook road, 10… | — |
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| Astragalus bisulcatus (Hook.) A.Gray var. bisulcatus | M. C. Wiegand 3646 | 06 Jun 1922 | United States of America | New Mexico | Colfax Co. 2 miles south… | — |
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| Astragalus calycosus var. scaposus (A.Gray) M.E.Jones | M. C. Wiegand 3668 | 22 May 1922 | United States of America | Arizona | Coconino Co. 21 miles southeast… | — |
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| Astragalus crassicarpus var. paysonii (E.H.Kelso) Barneby | M. C. Wiegand 3631 | 07 Jun 1922 | United States of America | Colorado | Pueblo Co. 20 miles south… | — |
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| Astragalus didymocarpus var. obispensis (Rydb.) Barneby | M. C. Wiegand 3606 | 01 Apr 1922 | United States of America | California | Imperial Co. 4 miles east… | — |
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| Astragalus flexuosus var. greenei (A.Gray) Barneby | M. C. Wiegand 3635 | 02 Jun 1922 | United States of America | New Mexico | Santa Fe Co. 20 miles… | — |
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| Astragalus lentiginosus var. diphysus (A.Gray) M.E.Jones | M. C. Wiegand 3627 | 23 May 1922 | United States of America | Arizona | Apache Co. 34 miles west… | — |
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| Astragalus nuttallianus var. imperfectus (Rydb.) Barneby | M. C. Wiegand 3615 | 18 Apr 1922 | United States of America | Arizona | 19 miles northwest of Florence,… | — |
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| Astragalus shortianus Nutt. ex Torr. & A.Gray | M. C. Wiegand 3679 | 09 Jun 1922 | United States of America | Colorado | El Paso Co. Pikes Peak… | — |
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| Astragalus xiphoides (Barneby) Barneby | M. C. Wiegand 3618 | 23 May 1922 | United States of America | Arizona | Navajo Co. Springerville road, 12… | — |
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| Atriplex canescens (Pursh) Nutt. | M. C. Wiegand 3153 | 25 May 1922 | United States of America | New Mexico | Socorro Co. Blue Canyon, 4… | — |
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| Camissonia breviflora (Torr. & A.Gray) P.H.Raven | M. C. Wiegand 3880 | 28 Apr 1922 | United States of America | Arizona | Pima Co. Oracle - Globe… | — |
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| Carex flava L. | M. C. Wiegand 1921 | 07 Jun 1914 | United States of America | New York | Onondaga Co. Shore of Green… | — |
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| Caucalis microcarpa Hook. & Arn. | M. C. Wiegand 3930 | 25 Apr 1922 | United States of America | Arizona | Pima Co. Recreation area, Santa… | — |
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| Ceanothus cuneatus (Hook.) Nutt. | M. C. Wiegand 3788 | 27 Apr 1922 | United States of America | Arizona | Pinal Co. 3 miles southeast… | — |
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| Cerastium arvense L. | M. C. Wiegand 3195 | 13 Jun 1922 | United States of America | Colorado | Boulder Co. 17 miles west… | — |
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| Chaenactis carphoclinia A.Gray | M. C. Wiegand 4508 | 15 Apr 1922 | United States of America | Arizona | Yuma Co. Salome road, 4… | — |
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| Chaenactis stevioides Hook. & Arn. | M. C. Wiegand 4517 | 15 Apr 1922 | United States of America | Arizona | Yuma Co. Salome road, 4… | — |
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| Chaetopappa ericoides (Torr.) G.L.Nesom | M. C. Wiegand 4389 | 22 May 1922 | United States of America | Arizona | Coconino Co. Open prairie, Winslow… | — |
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| Chaetopappa ericoides (Torr.) G.L.Nesom | M. C. Wiegand 4388 | 20 May 1922 | United States of America | New Mexico | Socorro Co. Desert Mesa, 23… | — |
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| Cirsium horridulum Michx. var. horridulum | M. C. Wiegand s.n. | July 11-08 | United States of America | Massachusetts | North Truro. | — |
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| Clematis columbiana (Nutt.) Torr. & A.Gray var. columbiana | M. C. Wiegand 3238 | 05 Jun 1922 | United States of America | New Mexico | Taos Co. 18 miles east… | — |
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| Clematis hirsutissima Pursh | M. C. Wiegand 3242 | 09 Jun 1922 | United States of America | Colorado | El Paso Co. Pikes Peak… | — |
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| Clematis hirsutissima Pursh | M. C. Wiegand 3243 | 05 Jun 1922 | United States of America | New Mexico | Colfax Co. road to Raton,… | — |
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| Corallorhiza maculata Raf. | M. C. Wiegand s.n. | 08 Sep 1908 | United States of America | Massachusetts | E. side of aqueduct E.… | — |
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| Corydalis aurea Willd. | M. C. Wiegand 3298 | 05 Jun 1922 | United States of America | New Mexico | Colfax Co. 18 mi E… | — |
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| Crepis capillaris (L.) Wallr. | M. C. Wiegand s.n. | 09 Oct 1912 | United States of America | Massachusetts | Norfolk Co. Weed in Bot… | — |
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| Cryptantha capitata (Eastw.) I.M.Johnst. | M. C. Wiegand 4174 | 07 May 1922 | United States of America | Arizona | Coconino Co. Santa Monica Spring,… | — |
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| Cryptantha fulvocanescens (S.Watson) Payson | M. C. Wiegand 4172 | 22 May 1922 | United States of America | Arizona | Coconino Co. Open prairie, 5… | — |
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| Dalea formosa Torr. | M. C. Wiegand 3600 | 24 May 1922 | United States of America | Arizona | Apache Co. Springfield road, 13… | — |
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| Dalea mollissima (Rydb.) Munz | M. C. Wiegand 3592 | 12 Apr 1922 | United States of America | California | San Bernardino Co. Mohave Desert,… | — |
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| Dalea versicolor var. sessilis (A.Gray) Barneby | M. C. Wiegand 3597 | 24 Apr 1922 | United States of America | Arizona | Pinal Co. Trail, Old Baldy,… | — |
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| Draba cuneifolia Nutt. | M. C. Wiegand 3305 | 04 May 1922 | United States of America | Arizona | Yavapai Co. Branch road to… | — |
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| Ephedra torreyana S.Watson | M. C. Wiegand 2978 | 28 May 1922 | United States of America | New Mexico | Sandoval Co. 39 miles north… | — |
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| Eriastrum diffusum subsp. jonesii H.Mason | M. C. Wiegand 4037 | 17 Apr 1922 | United States of America | Arizona | 23 miles north of Florence,… | — |
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| Eriastrum diffusum subsp. jonesii H.Mason | M. C. Wiegand 4036 | 15 Apr 1922 | United States of America | Arizona | Yuma Co. 4 miles east… | — |
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| Erigeron divergens var. cinereus A.Gray | M. C. Wiegand 4407 | 25 Apr 1922 | United States of America | Arizona | Pima Co. Santa Rita Mountains,… | — |
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| Erigeron flagellaris A.Gray | M. C. Wiegand 4402 | 07 Jun 1922 | United States of America | New Mexico | Colfax Co. Raton Pass, 10… | — |
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| Eriophyllum lanatum (Pursh) J.Forbes | M. C. Wiegand 4503 | 15 Apr 1922 | United States of America | Arizona | Yuma Co. 3 miles east… | — |
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| Erysimum capitatum (Douglas ex Hook.) Greene subsp. capitatum | M. C. Wiegand 3377 | 15 May 1922 | United States of America | Arizona | Coconino Co. Hermit Trail, 600… | — |
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| Eschscholzia californica var. mexicana (Greene) N.H.Holmgren & P.K.Holmgren | M. C. Wiegand 3283 | 28 Apr 1922 | United States of America | Arizona | Gila Co. 10 miles northeast… | — |
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| Eucrypta micrantha (Torr.) A.Heller | M. C. Wiegand 4121 | 20 Apr 1922 | United States of America | Arizona | Pinal Co. Phoenix road, 40… | — |
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| Euphorbia fendleri Torr. & A.Gray | M. C. Wiegand 3748 | 27 May 1922 | United States of America | New Mexico | Sandoval Co. Desert mesa, 39… | — |
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| Euphorbia melanadenia Torr. | M. C. Wiegand 3742 | 31 Mar 1922 | United States of America | California | Imperial Co. 1 mile east… | — |
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| Eurybia schreberi (Nees) Nees | M. C. Wiegand s.n. | 18 Aug 1908 | United States of America | New York | Cortland Co. Haight's Glen | — |
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| Evolvulus arizonicus A.Gray | M. C. Wiegand 3981 | 25 Apr 1922 | United States of America | Arizona | Pima Co. Recreation area, Santa… | — |
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| Fallugia paradoxa (D.Don) Endl. ex Torr. | M. C. Wiegand 3477 | 04 May 1922 | United States of America | Arizona | Coconino Co. Indian Gardens, 3,000… | — |
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| Fallugia paradoxa (D.Don) Endl. ex Torr. | M. C. Wiegand 3473 | 25 May 1922 | United States of America | New Mexico | Socorro Co. Blue Canyon, 4… | — |
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| Fallugia paradoxa (D.Don) Endl. ex Torr. | M. C. Wiegand 3474 | 28 May 1922 | United States of America | New Mexico | Sandoval Co. 39 miles north… | — |
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| Filago arizonica A.Gray | M. C. Wiegand 4420 | 16 Apr 1922 | United States of America | Arizona | Maricopa Co. 4 miles northwest… | — |
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| Fraxinus anomala Torr. ex S.Watson | M. C. Wiegand 3968 | 07 May 1922 | United States of America | Arizona | Coconino Co. Hermit Trail, Santa… | — |
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| Gaura coccinea Pursh | M. C. Wiegand 3927 | 06 Jun 1922 | United States of America | New Mexico | Colfax Co. Raton road, 9… | — |
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| Geranium carolinianum L. | M. C. Wiegand 3717 | 27 Apr 1922 | United States of America | Arizona | Pinal Co. Peppersauce Canyon, Mountain… | — |
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| Gilia flavocincta A.Nelson | M. C. Wiegand 3998 | 03 May 1922 | United States of America | Arizona | Yavapai Co. Black Canyon road… | — |
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| Gilia stellata A.Heller | M. C. Wiegand 4004 | 28 Apr 1922 | United States of America | Arizona | Gila Co. 5 miles east… | — |
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| Goodyera pubescens (Willd.) R.Br. | M. C. Wiegand s.n. | s.d. | United States of America | Massachusetts | Woods east of Aqueduct, Morse… | — |
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| Heterotheca hirsutissima G.L.Nesom | M. C. Wiegand 4363 | 12 Jun 1922 | United States of America | Colorado | Boulder Co. Lyons Road, 6… | — |
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| Hybanthus verticillatus (Ortega) Baill. | M. C. Wiegand 3834 | 12 Jun 1922 | United States of America | Colorado | Boulder Co. Lyons road, 6… | — |
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| Hymenoclea salsola var. pentalepis (Rydb.) L.D.Benson | M. C. Wiegand 4443 | 02 May 1922 | United States of America | Arizona | Maricopa Co. Black Canyon road,… | — |
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| Hymenopappus filifolius var. cinereus (Rydb.) I.M.Johnst. | M. C. Wiegand 4491 | 27 May 1922 | United States of America | New Mexico | Sandoval Co. Desert Mesa, Santa… | — |
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| Hymenoxys acaulis (Pursh) K.F.Parker | M. C. Wiegand 4524 | 07 Jun 1922 | United States of America | Colorado | Pueblo Co. open prairie, Trinidad… | — |
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| Hymenoxys argentea (A.Gray) K.F.Parker | M. C. Wiegand 4527 | 03 Jun 1922 | United States of America | New Mexico | Santa Fe Co. Rito de… | — |
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| Ilex glabra (L.) A.Gray | M. C. Wiegand s.n. | July 12-08 | United States of America | Massachusetts | — |
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