Acc. No. Image Link ImageID Family Basionym Taxonomic Type Type Citation Current Name Collector Coll. No. Other Notes
8382 IMGP1411.jpg IMGP1411.jpg Acanthaceae Beloperone fragilis B.L. Robinson Iso Proc. Amer. Acad. Arts, 27:183. 1892. Beloperone fragilis B.L. Robinson C.G. Pringle 3933
24931 IMGP0968.jpg IMGP0968.jpg Acanthaceae Dicliptera glandulosa Scheele Iso (possible) Rhodora, 43:287. 1941. Dicliptera brachiata (Pursh) Spreng. var. glandulosa (Scheele) Fernald Lindheimer 1062
44380 IMGP0960.jpg IMGP0960.jpg Acanthaceae Dyschoriste pringlei Greenman Isosyn Proc. Amer. Acad., 40:32. 1904. Dyschoriste pringlei Greenman C.G. Pringle 11313
43074 IMGP0961.jpg IMGP0961.jpg Acanthaceae Ruellia pringlei Fernald Iso Proc. Amer. Acad. Arts, 43:67. 1907. Ruellia pringlei Fernald C.G. Pringle 10071
50964 IMGP2657.jpg IMGP2657.jpg Actinidiaceae Saurauia pseudopringlei Buscal. var. fluviatilis Rose ex Buscal. Iso (possible) Malpighia 28:380. 1919. Saurauia pseudopringlei Buscal. var. fluviatilis Rose ex Buscal. C.G. Pringle 10122
67405 IMGP0962.jpg IMGP0962.jpg Agavaceae Yucca linearifolia Clary Iso Brittonia, 47:394, fig. 1995. Yucca linearifolia Clary K.H. Clary, B.L. Turner, and T. Patterson 364
281 IMGP0963.jpg IMGP0963.jpg Alismataceae Alisma brevipes Greene Iso Pittonia, 4:158. 1900. Alisma subcordatum Raf. C.F. Baker 138
9510 IMGP0964.jpg IMGP0964.jpg Amaranthaceae Amaranthus arenicola I.M. Johnston Iso J. Arnold. Arbor., 29:193. 1948. Amaranthus arenicola I.M. Johnston A.S. HItchcock
17431 IMGP0974.jpg IMGP0974.jpg Anacardiaceae Schmaltzia leiocarpa Greene Iso Leafl. Bot. Observ. Crit., 1:133. 1905. Rhus trilobata Nutt. var. trilobata E.O. Wooton 48
17375 IMGP0972.jpg IMGP0972.jpg Anacardiaceae Schmaltzia nortonii Greene Isosyn Leafl. Bot. Observ. Crit., 1:132. 1905. Rhus aromatica Ait. var. aromatica J.B. Norton
17377 IMGP0973.jpg IMGP0973.jpg Anacardiaceae Schmaltzia nortonii Greene Isosyn Leafl. Bot. Observ. Crit., 1:132. 1905. Rhus aromatica Ait. var. aromatica J.B. Norton 74
17494 IMGP0975.jpg IMGP0975.jpg Anacardiaceae Toxicodendron negundo Greene Iso Leafl. Bot. Observ. Crit., 1:117. 1905. Toxicodendron radicans (L.) Kuntze var. radicans J.B. Norton 73
17448 IMGP1409.jpg IMGP1409.jpg Anacardiaceae Toxicodendron punctatum Greene Iso Leafl. Bot. Observ. Crit., 1:125. 1905. Toxicodendron radicans (L.) Kuntze var. radicans O.B. Metcalfe 1088
20036 Apiaceae Cymopterus constancei R.L. Hartman Para Brittonia, 52:136-141.  2000. Cymopterus constancei R.L. Hartman A. Nelson 9004
19845 Apiaceae Cymopterus constancei R.L. Hartman Para Brittonia, 52:136-141.  2000. Cymopterus constancei R.L. Hartman C.C. Ellis 7
19839 Apiaceae Cymopterus constancei R.L. Hartman Para Brittonia, 52:136-141.  2000. Cymopterus constancei R.L. Hartman C.F. Baker 500
19846 Apiaceae Cymopterus constancei R.L. Hartman Para Brittonia, 52:136-141.  2000. Cymopterus constancei R.L. Hartman C.F. Baker 499
35221 Apiaceae Cymopterus constancei R.L. Hartman Para Brittonia,52:136-141.  2000. Cymopterus constancei R.L. Hartman D.G. Craig
56455 Apiaceae Cymopterus constancei R.L. Hartman Para Brittonia, 52:136-141. 2000. Cymopterus constancei R.L. Hartman R.W. Spellenberg and D. Jewell 9093
72744 Apiaceae Cymopterus constancei R.L. Hartman Para Brittonia, 52: 136-141.  2000. Cymopterus constancei R.L. Hartman W.D. Shirley
35966 Apiaceae Cymopterus constancei R.L. Hartman Para Brittonia, 52:136-141.  2000. Cymopterus constancei R.L. Hartman Anonymous
35219 Apiaceae Cymopterus constancei R.L. Hartman Para Brittonia, 52:136-141.  2000. Cymopterus constancei R.L. Hartman B.S. Klinger
19877 IMGP0977.jpg IMGP0977.jpg Apiaceae Eryngium pilularioides Hemsley & Rose Iso Contr. U.S. Natl. Herb., 8:333, fig 8. 1905. Eryngium pilularioides Hemsley & Rose C.G. Pringle 8948
37962 IMGP0978.jpg IMGP0978.jpg Apiaceae Prionosciadum townsendii Rose Iso Contr. U.S. Natl. Herb., 8:335. 1905. Prionosciadum townsendii Rose C.H.T. Townsend and C.M. Barber 381
19998 IMGP0979.jpg IMGP0979.jpg Apiaceae Pseudocymopterus filicinus Wooton & Standley Iso Contr. U.S. Natl. Herb., 16:158. 1913. Pseudocymopterus filicinus Wooton & Standley O.B. Metcalfe 165
62112 IMGP0981.jpg IMGP0981.jpg Apocynaceae Amsonia fugatei McLaughlin Iso Southw. Naturalist, 30(4):563, fig. 1985. Amsonia fugatei McLaughlin S.P. McLaughlin 2819
20753 IMGP0982.jpg IMGP0982.jpg Apocynaceae Apocynum angustifolium Wooton Iso Contr. U.S. Natl. Herb., 16:159. 1913. Apocynum angustifolium Wooton Ex. Wooton and Standley O.B. Metcalfe 132
20788 IMGP0983.jpg IMGP0983.jpg Apocynaceae Apocynum scopulorum Greene Isosyn (possible) Fl. Colorado, p. 269. 1906. Apocynum scopulorum Greene C.F. Baker 527
20800 IMGP0984.jpg IMGP0984.jpg Apocynaceae Apocynum viride Wooton & Standley Iso Contr. U.S. Natl. Herb., 16:159. 1913. Apocynum viride Wooton & Standley E.O. Wooton and P.C. Standley 3451
8332 IMGP2576.jpg IMGP2576.jpg Aristolochiaceae Aristolochia malacophylla Standley Iso Proc. Biol. Soc. Wash., 33:65. 1920. Aristolochia malacophylla Standley C.G. Pringle 13424
57233 IMGP0985.jpg IMGP0985.jpg Asclepiadaceae Asclepias sanjuanensis K.D. Heil, J.M. Porter & S.L. Welsh Iso Great Basin Naturalist, 49:100, fig 1. 1989. Asclepias sanjuanensis K.D. Heil, J.M. Porter & S.L. Welsh K. Heil 4338
27234 IMGP2148.jpg IMGP2148.jpg Asteraceae Achaetogeron ascendens Greenman Iso Proc. Amer. Acad. Arts, 41:254. 1905. Erigeron janivultus Nesom spp. janivultus C.G. Pringle 8851
27235 IMGP0987.jpg IMGP0987.jpg Asteraceae Achaetogeron purpurascens Greenman Iso Proc. Amer. Acad. Arts, 39:94. 1903. Erigeron wislizeni (Gray) Greene var. purpurascens (Greenman) Nesom C.H.T. Townsend and C.M. Barber 175
27236 IMGP0988.jpg IMGP0988.jpg Asteraceae Achaetogeron versicolor Greenman Iso Proc. Amer. Acad. Arts, 41:255. 1905. Erigeron versicolor (Greenman) Nesom C.G. Pringle 8849
8386 IMGP2635.jpg IMGP2635.jpg Asteraceae Achyrocline deflexa B.L. Rob. & Greenm. Iso Amer. J. Sci., 50:153. 1895. Achyrocline deflexa B.L. Rob. & Greenm. C.G. Pringle 6054
44614 IMGP2575.jpg IMGP2575.jpg Asteraceae Ageratum corymbosum Zucc. f. albiflorum B.L. Rob. Iso Contr. Gray Herb., 42:476. 1913. Ageratum corymbosum Zucc. f. albiflorum B.L. Rob. C.G. Pringle 9842
43114 IMGP2604.jpg IMGP2604.jpg Asteraceae Ageratum salicifolium subsp. annectens S.F. Blake Iso Contr. U.S. Natl. Herb., 22:588. 1924. Ageratum strictum Hemsl. C.G. Pringle 9045
27321 IMGP1412.jpg IMGP1412.jpg Asteraceae Antennaria latisquamea Greene Iso Leafl. Bot. Observ. Crit., 1:145. 1905. Antennaria parvifolia Nutt. O.B. Metcalfe 1433
27410 IMGP0991.jpg IMGP0991.jpg Asteraceae Antennaria peramoena Greene Iso Leafl. Bot. Observ. Crit., 2:144. 1911. Antennaria marginata Greene E.O. Wooton
27422 IMGP0992.jpg IMGP0992.jpg Asteraceae Aphanostephus perennis Wooton & Standley Iso Contr. U.S. Natl. Herb., 16:189. 1913. Aphanostephus perennis Wooton & Standley E.O. Wooton
56239 IMGP0993.jpg IMGP0993.jpg Asteraceae Arnicastrum glandulosum Greenman Isolecto Proc. Amer. Acad. Arts, 39:115. 1903. Arnicastrum glandulosum Greenman C.H.T. Townsend and C.M. Barber 169
27508 IMGP2623.jpg IMGP2623.jpg Asteraceae Artemisia gracillima Rydberg Iso N. Amer. Fl., 34:253. 1916. Artemisia dracunculus L. O.B. Metcalfe 1444
27621 IMGP2552.jpg IMGP2552.jpg Asteraceae Artemisia neomexicana Greene Iso N. Amer. Fl., 34:279. 1916. Artemisia neomexicana Greene O.B. Metcalfe 1248
27701 IMGP0994.jpg IMGP0994.jpg Asteraceae Aspilia stenophylla Greenman Iso Proc. Amer. Acad. Arts, 39:102. 1903. Aspilia stenophylla Greenman C.H.T. Townsend and C.M. Barber 380
40650 IMGP1000.jpg IMGP1000.jpg Asteraceae Aster boltoniae Greene Isosyn Pittonia, 3(17):248. 1897. Psilactis asteroides A. Gray M.E. Jones 4207
27731 IMGP0999.jpg IMGP0999.jpg Asteraceae Aster cordineri A. Nelson Iso Bot. Gaz., 40:64. 1905. Aster cordineri A. Nelson W.S. Cooper
27767 IMGP1006.jpg IMGP1006.jpg Asteraceae Aster fulcratus Greene Iso Pittonia, 4:217. 1900. Aster fulcratus Greene C.F. Baker 638
27779 IMGP0997.jpg IMGP0997.jpg Asteraceae Aster hesperius A. Gray var. wootonii Greene Iso Bull. Torrey Bot. Club, 25(3):119. 1898. Aster hesperius A. Gray var. wootonii Greene E.O. Wooton 329
27787 IMGP0996.jpg IMGP0996.jpg Asteraceae Aster hydrophilus Greene Ex Wooton & Standley Iso Contr. U.S. Natl. Herb., 16:187. 1913. Aster pauciflorus Nuttall O.B. Metcalfe 1393
27842 IMGP2511.jpg IMGP2511.jpg Asteraceae Aster neomexicanus Wooton & Standley Iso Contr. U.S. Natl. Herb., 16:187. 1913. Symphyotrichum expansum (Poepp. ex Spring.) Nesom F.S. Earle and E.S. Earle 327
42902 IMGP1002.jpg IMGP1002.jpg Asteraceae Barroetea sessilifolia Greenman Isosyn Proc. Amer. Acad. Arts, 40:35. 1904. Barroetea sessilifolia Greenm. C.G. Pringle 9865
8385 IMGP2551.jpg IMGP2551.jpg Asteraceae Barroetea subuligera Gray var. latisquama Greenman Iso Proc. Amer. Acad. Arts, 40:35. 1904. Barroetea subuligera Gray var. latisquama Greenman C.G. Pringle 8773
28129 IMGP1004.jpg IMGP1004.jpg Asteraceae Bidens cognata Greene Iso Leaft. Bot. Observ. Crit., 1:149. 1905. Bidens tenuisecta A. Gray O.B. Metcalfe 1436
28121 IMGP1003.jpg IMGP1003.jpg Asteraceae Bidens leptocephala Sherff Isosyn Bot. Gaz., 64:22. 1917. Bidens leptocephala Sherff J.C. Blumer 1712
42903 IMGP2550.jpg IMGP2550.jpg Asteraceae Bidens rosea Schz. Bip. var. aequisquama Fernald Iso Proc. Amer. Acad. Arts, 43:68. 1907. Bidens aequisquama (Fern.) Sherff C.G. Pringle 10109
28151 IMGP2570.jpg IMGP2570.jpg Asteraceae Bidens townsendii Sherff Iso Bot. Gaz., 89:363. 1930. Bidens odorata Cav. C.H.T. Townsend and C.M. Barber 415
28589 IMGP1005.jpg IMGP1005.jpg Asteraceae Bigelowia albida Jones Ex A. Gray Iso Proc. Amer. Acad. Arts, 17:209. 1881. Chrysothamnus albidus (Jones) Greene M.E. Jones 2192
41836 IMGP2605.jpg IMGP2605.jpg Asteraceae Brickellia californica var. lobulata B.L. Rob. Iso Mem. Gray Herb., 1:71. 1917. Brickellia californica T. & G. C.G. Pringle 13543
42905 IMGP2606.jpg IMGP2606.jpg Asteraceae Brickellia saltillensis B.L. Rob. Iso Proc. Amer. Acad. Arts, 43:37. 1907. Brickellia saltillensis B.L. Rob. C.G. Pringle 10082
8373 IMGP2607.jpg IMGP2607.jpg Asteraceae Calea pringlei B.L. Rob. Iso Proc. Amer. Acad. Arts, 36:488. 1901. Calea pringlei B.L. Rob. C.G. Pringle 8373
28712 IMGP1013.jpg IMGP1013.jpg Asteraceae Carduus gilensis Wooton & Standley Iso Contr. U.S. Natl. Herb., 16:195. 1913. Cirsium gilensis Wooton & Standley O.B. Metcalfe 377
28713 IMGP1027.jpg IMGP1027.jpg Asteraceae Carduus inornatus Wooton & Standley Iso Contr. U.S. Natl. Herb., 16:195. 1913. Cirsium inornatum (Wooton & Standley) E.O. Wooton
28707 IMGP1025.jpg IMGP1025.jpg Asteraceae Carduus pallidus Wooton & Standley Iso Contr. U.S. Natl. Herb., 16:195. 1913. Cirsium pallidum (Wooton & Standley) P.C. Standley 4357
28715 IMGP2131.jpg IMGP2131.jpg Asteraceae Carduus perennans Greene Isolecto Bull. Torrey Bot. Club, 25:123. 1898. Pissium wheeleri (Gray) Petrak E.O. Wooton 326
28724 IMGP1009.jpg IMGP1009.jpg Asteraceae Carduus pulchellus Greene Ex Rydberg Iso Fl. Colorado, p. 400. 1906. Cirsium pulchellus (Greene) Wooton & Standley C.F. Baker 646
28652 IMGP1085.jpg IMGP1085.jpg Asteraceae Carduus vinaceus Wooton & Standley Iso Contr. U.S. Natl. Herb., 16:193. 1913. Carduus vinaceus Wooton & Standley E.O. Wooton
28386 IMGP1014.jpg IMGP1014.jpg Asteraceae Chaenactis paleolifera  A. Nelson Iso Bot. Gaz., 47:434. 1909. Chaenactis carphoclinia var. carphoclinia A. Gray L.N. Goodding 2344
56115 IMGP1015.jpg IMGP1015.jpg Asteraceae Chaetopappa elegans Soreng & Spellenberg Iso Syst. Bot., 9:1. 1984. Chaetopappa elegans Soreng & Spellenberg R. Soreng, R. Spellenberg, D. Ward 2026
28410 IMGP1016.jpg IMGP1016.jpg Asteraceae Chaptalia alsophila Greene Iso Leafl. Bot. Observ. Crit., 1:158. 1905. Chaptalia alsophila Greene O.B. Metcalfe 1454
28430 IMGP1021.jpg IMGP1021.jpg Asteraceae Chrysopsis bakeri Greene Isolecto Pittonia, 4:154. 1900. Heterotheca villosa (Pursh) Shinners var. minor (Hook.) Semple, in ed. C.F. Baker 649
28425 IMGP1020.jpg IMGP1020.jpg Asteraceae Chrysopsis hirsutissima Greene Isolecto Pittonia, 4:154. 1900. Heterotheca villosa (Pursh) Shinners var. minor (Hook) Semple, in ed C.F. Baker 650
28451 IMGP2566.jpg IMGP2566.jpg Asteraceae Chrysopsis nitidula Wooten & Standley Iso Contr. U.S. Natl. Herb., 16:179. 1913. Heterotheca fulcrata (Greene) Shinners var. amplifolia (Rydb.) Semple, in ed. O.B. Metcalfe 552
28454 IMGP1017.jpg IMGP1017.jpg Asteraceae Chrysopsis pedunculata Greene Isolecto Pittonia, 4:154. 1900. Heterotheca villosa (Pursh) Shinners var. pedunculata (Greene) Harms ex Semple C.F. Baker 651
28611 IMGP1022.jpg IMGP1022.jpg Asteraceae Chrysothamnus confinis Greene Iso Pittonia, 5:62. 1902. Chrysothamnus nauseosus (Pallas) Britt. ssp. graveolens (Nutt.) Piper E.O. Wooton 379
69805 IMGP1023.jpg IMGP1023.jpg Asteraceae Circium ochrocentrum (A. Gray) subsp. martinii P. Barlow Iso Novon, 9(3): 320, figs. 1-2. 1999. Circium ochrocentrum (A. Gray) subsp. martinii P. Barlow P. Barlow-Irick
28685 IMGP2084.jpg IMGP2084.jpg Asteraceae Cirsium ochrocentrum var. townsendii Petrak Iso Beih. Bot. Centralbl., 35, Ab. 2:420. 1917. Cirsium undulatum (Nutt.) Spring. var. townsendii (Petrak) Hsi C.H.T. Townsend and C.M. Barber 59
28225 IMGP1030.jpg IMGP1030.jpg Asteraceae Coleosanthus ambigens Greene Iso Bull. Torrey Bot. Club, 25:118, pl. 330. 1898. Brickellia fendleri (Gray) King & Robins. E.O. Wooton 335
28233 IMGP1029.jpg IMGP1029.jpg Asteraceae Coleosanthus axillaris Greene Iso Leafl. Bot. Observ. Crit., 1:149. 1905. Coleosanthus axillaris Greene O.B. Metcalfe 1446
28254 Asteraceae Coleosanthus chenopodinus Greene Ex Wooton & Standley Iso Contr. U.S. Natl. Herb., 16:177. 1913. Brickellia chenopodina Greene O.B. Metcalfe 776 ON LOAN:  Loan #428 to Randy Scott, Professor at NAU
28284 IMGP2655.jpg IMGP2655.jpg Asteraceae Coleosanthus modestus Greene Iso Pittonia, 4:236. 1901. Coleosanthus modestus Greene F.S. Earle and E.S. Earle 161
28286 Asteraceae Coleosanthus venosus Wooton & Standley Iso Brickellia venosa (Woot. & Standl.) Robins. O.B. Metcalfe 653 ON LOAN:  Loan #428 to Randy Scott, Professor at NAU
42908 IMGP2608.jpg IMGP2608.jpg Asteraceae Coreopsis pringlei B.L. Rob. Iso Proc. Amer. Acad. Arts, 43:41. 1907. Coreopsis pringlei B.L. Rob. C.G. Pringle 10050
29562 IMGP1033.jpg IMGP1033.jpg Asteraceae Crepis mogollonica Greene Ex Wooton & Standley Iso Contr. U.S. Natl. Herb., 16:176. 1913. Crepis mogollonica Greene ex Wooton & Standley O.B. Metcalfe 576
38985 IMGP1032.jpg IMGP1032.jpg Asteraceae Crepis neomexicana Wooton & Standley Iso Contr. U.S. Natl. Herb., 16:176. 1913. Crepis runcinata spp. runcinata Torr. E.O. Wooton
30745 IMGP1034.jpg IMGP1034.jpg Asteraceae Cynthia viridis Standley Iso Contr. U.S. Natl. Herb., 13:357. 1911. Krigia biflora (Walt.) Blake forma glandulifera Fernald P.C. Standley 4418
46353 IMGP1035.jpg IMGP1035.jpg Asteraceae Enceliopsis tuta A. Nelson Iso Bot. Gaz., 47(6):433. 1909. Enceliopsis nudicaulis (Gray) A. Nelson var. nudicaulis L.N. Goodding 2271
27766 IMGP2626.jpg IMGP2626.jpg Asteraceae Encephalus formosus Greene Iso Pittonia, 4:156. 1900. Aster glaucodes var. formosus (Greene) Kittell C.F. Baker 659
56411 IMGP1048.jpg IMGP1048.jpg Asteraceae Erigeron acomanus Spellenberg & Knight Iso Madrono, 36(2):115. 1989. Erigeron acomanus Spellenberg & Knight P. Knight 2689
29692 IMGP1047.jpg IMGP1047.jpg Asteraceae Erigeron arenarius Greene Iso Bull. Torrey Bot. Club, 25(3):121. 1898. Erigeron arenarius Greene E.O. Wooton 23
58031 IMGP1045.jpg IMGP1045.jpg Asteraceae Erigeron arisolius Nesom Iso Phytologia, 69(4): 243. 1990. Erigeron arisolius Nesom G. Nesom 4521
57443 IMGP1044.jpg IMGP1044.jpg Asteraceae Erigeron basaseachensis Nesom Iso Phytologia, 66(5):426. 1989. Erigeron basaseachensis Nesom G. Nesom, P. Lewis 5089
62734 IMGP1043.jpg IMGP1043.jpg Asteraceae Erigeron bistiensis Nesom & Hevron Iso Madrono, 42:13. 1995. Erigeron bistiensis Nesom & Hevron B. Hevron, J. Merz 1975
73145 IMGP1042.jpg IMGP1042.jpg Asteraceae Erigeron caulinifolius Nesom Iso Phytologia, 66(5):428. 1989. Erigeron caulinifolius Nesom G. Nesom, A. McDonald 6483
73146 IMGP1041.jpg IMGP1041.jpg Asteraceae Erigeron coroniglandifer Nesom Iso Phytologia, 66(5):432. 1989. Erigeron coroniglandifer Nesom G. Nesom 4964
29901 IMGP1040.jpg IMGP1040.jpg Asteraceae Erigeron deminutus Wooton & Standley Iso Contr. U.S. Natl. Herb., 16:183. 1913. Erigeron flagellaris Gray E.O. Wooton
29738 IMGP1038.jpg IMGP1038.jpg Asteraceae Erigeron deustus Greene Iso (possible) Leafl. Bot. Observ. Crit., 1:211. 1906. Erigeron deustus Greene O.B. Metcalfe 886
29718 IMGP2622.jpg IMGP2622.jpg Asteraceae Erigeron dicladus Greene Iso Leafl. Bot. Observ. Crit., 2:214. 1912. Erigeron tracyi E.L. Greene O.B. Metcalfe 967
54847 IMGP2539.jpg IMGP2539.jpg Asteraceae Erigeron eruptens G.L. Nesom Iso Phytologia, 66:438. 1989. Erigeron eruptens G.L. Nesom R.W. Spellenberg, R. Soreng, R. Corral-Dφaz, J. Cornelius, C. Spurrier, and T.K. Todsen 8070
29782 IMGP1037.jpg IMGP1037.jpg Asteraceae Erigeron formosissimus Greene Iso Bull. Torrey Bot. Club, 25(3):121. 1898. Erigeron formosissimus Greene E.O. Wooton 352
47547 IMGP1036.jpg IMGP1036.jpg Asteraceae Erigeron hessii Nesom Iso Brittonia, 30(4):440. 1978. Erigeron hessii Nesom W.J. Hess 2269
29870 IMGP1062.jpg IMGP1062.jpg Asteraceae Erigeron patruelis Nesom Iso Unpubished bionomial. Erigeron patruelis Nesom [unpublished] C.H.T. Townsend and C.M. Barber 188
29842 Asteraceae Erigeron pecosensis Standley Para Muhlenbergia, 5:29. 1909. Erigeron formosissimus Greene var. viscidus (Rydberg) Cronquist P.C. Standley 4181
29843 IMGP1061.jpg IMGP1061.jpg Asteraceae Erigeron pecosensis Standley Holo Muhlenbergia, 5:29. 1909. Erigeron formosissimus Greene var. viscidus (Rydberg) Cronquist P.C. Standley 4358
29844 Asteraceae Erigeron pecosensis Standley Para Muhlenbergia, 5:29. 1909. Erigeron formosissimus Greene var. viscidus (Rydberg) Cronquist P.C. Standley 4830
29855 IMGP1060.jpg IMGP1060.jpg Asteraceae Erigeron platyphyllus Greene Iso Leafl. Bot. Observ. Crit., 1:145. 1905. Erigeron vreelandii E. Greene O.B. Metcalfe 1469
29802 IMGP1059.jpg IMGP1059.jpg Asteraceae Erigeron rudis Wooton & Standley Iso Contr. U.S. Natl. Herb., 16:184. 1913. Erigeron vreelandii E. Greene E.O. Wooton 270
58630 IMGP1058.jpg IMGP1058.jpg Asteraceae Erigeron rybius Nesom Iso Syst. Bot., 7(4):457. 1982. Erigeron rybius Nesom G. Nesom 4535
29790 IMGP1057.jpg IMGP1057.jpg Asteraceae Erigeron salicinus Rydberg Iso Bull. Torrey Bot. Club, 32:125. 1905. Erigeron salicinus Rydberg C.F. Baker 670
58033 IMGP1055.jpg IMGP1055.jpg Asteraceae Erigeron sceptrifer Nesom Iso Phytoligia, 69:248. 1990. Erigeron sceptrifer Nesom G. Nesom 4477
29806 IMGP1054.jpg IMGP1054.jpg Asteraceae Erigeron semirasus Wooton & Standley Iso Contr. U.S. Natl. Herb., 16:185. 1913. Erigeron vreelandii E. Greene O.B. Metcalfe 320
29725 IMGP2625.jpg IMGP2625.jpg Asteraceae Erigeron setulosus Greene Iso Pittonia, 4:319. 1901. Erigeron concinnus (Hook. & Arn.) Torr. & Gray. var. concinnus C.F. Baker 664
29799 IMGP1053.jpg IMGP1053.jpg Asteraceae Erigeron subglaber Cronquist Iso Brittonia, 6(2):207. 1947. Erigeron subglaber Cronquist P.C. Standley 4596
29898 IMGP1051.jpg IMGP1051.jpg Asteraceae Erigeron superbus Greene Isosyn (possible) Fl. Colorado, p. 361. 1906. Erigeron superbus Greene C.F. Baker 679
29902 IMGP1049.jpg IMGP1049.jpg Asteraceae Erigeron tonsus Wooton & Standley Iso Contr. U.S. Natl. Herb., 16:186. 1913. Erigeron flagellaris Gray E.O. Wooton
32458 IMGP1063.jpg IMGP1063.jpg Asteraceae Eriocarpum serratum Greene Iso Bull. Torrey Bot. Club, 25:119. 1898/ Sideranthus serratus (Greene) Standley E.O. Wooton 251
29985 IMGP2574.jpg IMGP2574.jpg Asteraceae Eupatorium collodes B.L. Rob. & Greenman Iso Amer. J. Sci., 50:152. 1895. Eupatorium collodes B.L. Rob. & Greenman C.G. Pringle 4941
30022 IMGP2573.jpg IMGP2573.jpg Asteraceae Eupatorium oresbium B.L. Rob. Iso Proc. Amer. Acad. Arts, 35:337. 1900. Eupatorium oresbium B.L. Rob. C.G. Pringle 8030
42662 IMGP2572.jpg IMGP2572.jpg Asteraceae Eupatorium porriginosum B.L. Rob. Iso Contr. Gray Herb., n.s. 75:11. 1925. Eupatorium porriginosum B.L. Rob. C.G. Pringle 13047
42916 IMGP2549.jpg IMGP2549.jpg Asteraceae Eupatorium saltillense B.L. Robinson Iso Proc. Amer. Acad. Arts, 43:34. 1907. Eupatorium saltillense B.L. Robinson C.G. Pringle 10080
42917 IMGP2609.jpg IMGP2609.jpg Asteraceae Eupatorium sphenopodum B.L. Rob. Iso Proc. Amer. Acad. Arts, 43:35. 1907. Eupatorium sphenopodum B.L. Rob. C.G. Pringle 10259
72751 IMGP1066.jpg IMGP1066.jpg Asteraceae Gaillardia pedunculata A. Nelson Iso Bot. Gaz., 47(6):432. 1909. Gaillardia arizonica A. Gray L.N. Goodding 2177
53429 IMGP1067.jpg IMGP1067.jpg Asteraceae Galinsoga spellenbergii B.L. Turner Iso Phytologia, 59:91. 1986. Galinsoga spellenbergii B.L. Turner R. Spellenberg, J. Zimmerman 6652
30259 IMGP2571.jpg IMGP2571.jpg Asteraceae Gnaphalium viridulum I.M. Johnst. Iso Contr. Gray Herb., n.s. 70:86. 1924. Pseudognaphalium canescens (DC.) Anderb. O.B. Metcalfe 742
30288 IMGP1074.jpg IMGP1074.jpg Asteraceae Grindelia arizonica A. Gray var. dentata Steyerm. Iso Ann. Missouri Bot. Gard., 21:508. 1934. Grindelia arizonica A. Gray var. arizonica O.B. Metcalfe 744
30278 IMGP1073.jpg IMGP1073.jpg Asteraceae Grindelia arizonica A. Gray var. stenophylla Steyerm. Iso Ann. Missouri Bot. Gard., 21:507. 1934. Grindelia arizonica A. Gray var. stenophylla Steyerm. E.O. Wooton 2568
43563 IMGP1072.jpg IMGP1072.jpg Asteraceae Grindelia fraxino-pratensis Reveal & Beatley Iso Bull. Torrey Bot. Club, 98(6): 334. 1971 (publ. 1972).  Grindelia frazino-pratensis Reveal & Beatley J.L. Reveal, N.H. Holmgren 1887
30297 IMGP1089.jpg IMGP1089.jpg Asteraceae Grindelia neomexicana Wooton & Standley Iso Contr. U.S. Natl. Herb., 16:178. 1913. Grindelia neomexicana Wooton & Standley E.O. Wooton
30296 IMGP2651.jpg IMGP2651.jpg Asteraceae Grindelia scabra Greene Isosyn Bull. Torrey Bot. Club, 25:120. 1898. Grindelia scabra Greene E.O. Wooton 372
30299 IMGP2648.jpg IMGP2648.jpg Asteraceae Grindelia scabra Greene Isolecto Bull. Torrey Bot. Club, 25:120. 1898. Grindelia scabra Greene E.O. Wooton 224
30321 IMGP1069.jpg IMGP1069.jpg Asteraceae Grindelia subincisa Greene Iso Pittonia, 4:154. 1900. Grindelia decumbens Greene C.F. Baker 683
44416 IMGP1076.jpg IMGP1076.jpg Asteraceae Gutierrezia argyrocarpa Greenman Iso Proc. Amer. Acad. Arts, 40:35. 1904. Gutierrezia argyrocarpa Greenman C.G. Pringle 11361
30374 IMGP1078.jpg IMGP1078.jpg Asteraceae Gutierrezia glomerella Greene Iso Pittonia, 4:54. 1899. Gutierrezia microcephala (DC.) A. Gray E.O. Wooton 449
30386 IMGP1077.jpg IMGP1077.jpg Asteraceae Guttierrezia juncea Greene Isosyn Pittonia, 4:56. 1899. Gutierrezia sarothrae (Pursh) Britt. & Rusby J. Skehan 78
30389 IMGP1075.jpg IMGP1075.jpg Asteraceae Guttierrezia longifolia Greene Iso Pittonia, 4:54. 1899. Gutierrezia sarothrae (Pursh) Britt. & Rusby E.O. Wooton 377
30448 IMGP1079.jpg IMGP1079.jpg Asteraceae Gymnolomia brevifolia Greene Ex Wooton & Standley Iso Contr. U.S. Natl. Herb., 16:190. 1913. Gymnolomia brevifolia Greene Ex Wooton & Standley O.B. Metcalfe 511
44417 IMGP2610.jpg IMGP2610.jpg Asteraceae Gymnolomia hypochlora S.F. Blake Iso Proc. Amer. Acad. Arts, 51:516. 1916. Gymnolomia ghiesbreghtii Hemsl. C.G. Pringle 11537
30515 IMGP1080.jpg IMGP1080.jpg Asteraceae Helianthella majuscula Greene Iso Leafl. Bot. Observ. Crit., 1:148. 1905. Helianthella quinquenervis (Hook.) A. Gray O.B. Metcalfe 1435
30749 IMGP2569.jpg IMGP2569.jpg Asteraceae Hieracium prionobium B.L. Rob. & Greenman Isosyn Proc. Amer. Acad Arts, 40:17. 1904. Hieracium abscissum Less. C.H.T. Townsend and C.M. Barber 254
30800 IMGP1082.jpg IMGP1082.jpg Asteraceae Hymenopappus nudatus Wooton & Standley Iso Contr. U.S. Natl. Herb., 16:191. 1913. Hymenopappus nudatus Wooton & Standley O.B. Metcalfe 107
50365 IMGP1084.jpg IMGP1084.jpg Asteraceae Hymenoxys brachyactis Wooton & Standley Iso Contr. U.S. Natl. Herb., 16:192. 1913. Actinea brachyactis (Wooton & Standley) Parker E.O. Wooton
47272 IMGP1083.jpg IMGP1083.jpg Asteraceae Hymenoxys chrysanthemoides (Kunth) DC. var. juxta Cockerell Iso Bull. Torrey Bot. Club, 31(9):503. 1904. Hymenoxys odorata DC. O.B. Metcalfe 118
48062 IMGP1096.jpg IMGP1096.jpg Asteraceae Isocoma azteca Nesom Iso Phytologia, 70(2):84. 1991. Isocoma tenuisecta Greene R. Spellenberg, J. Reitzel, H. McKinney 4344
58628 IMGP1092.jpg IMGP1092.jpg Asteraceae Isocoma tomentosa Nesom Iso Phytologia, 70:109. 1991. Isocoma tomentosa Nesom G. Nesom, L. Vorobik 5478
44666 IMGP2588.jpg IMGP2588.jpg Asteraceae Jali