Abronia fragrans. 74
Achillea millefolium. 138
Allium drummondii. 108
Annual eriogonum. 277
Apocynum cannabimum. 77
Argemone polyanthemos. 112
Argemone squarrosa. 113
Artemisia carruthii. 284
Artemisia filifolia. 285
Asclepias arenaria. 102
Asclepias asperula var. decumbens. 99
Asclepias engelmanniana. 103
Asclepias latifolia. 107
Asclepias pumila. 106
Asclepias speciosa. 101
Aster falcatus. 165
Astragalus lotiflorus. 218
Astragalus missouriensis. 215
Astragalus mollissimus. 217
Baby white aster. 158
Bastard toadflax. 76
Bigbract verbena. 86
Black sampson echinacea. 154
Blazing star. 190
Bractless mentzelia. 122
Broadleaf milkweed. 107
Broom snakeweed. 144
Buffalo gourd. 92
Buffalo-burr nightshade. 88
Bush morning-glory. 98
Caesalpinia jamesii. 252
Caesalpinia. 252
Callirhoe involucrata. 58
Calylophus hartwegii, ssp. fendleri. 18
Calylophus lavandulifolius. 17
Calylophus serrulatus. 20
Ceanothus herbaceous, var. pubescens. 42
Chamaesaracha coniodes. 89
Ciliate goldenweed. 151
Cirsium ochrocentrum. 195
Cirsium undulatum. 196
Columnar coneflower. 124
Comandra umbellata, ssp. pallida. 76
Commelina erecta. 2
Common devil's claw. 234
Common prickly pear. 119
Common sunflower. 156
Common yarrow. 138
Convolvulus arvensis. 96
Convolvulus equitans. 97
Corydalis aurea ssp. occidentalis. 226
Coryphantha vivipara. 121
Croton texensis. 261
Cryptantha jamesii. 84
Cryptantha minima. 85
Cryptantha. 85
Cucurbita foetidissima. 92
Cupseed stickseed. 83
Curlycup gumweed. 150
Curlycup gumweed. 191
Cursed crowfoot. 45
Cut-leaved evening primrose. 15
Cutleaf ironplant. 159
Cymopteris montanus. 256