May-June

9. Scarlet gaura , Gaura coccinea
13. Western wallflower , Erysimum asperum
14. Evening primrose, Oenothera macrocarpa
23. Pale evening primrose, Oenothera albicaulis
34. Catchweed bedstraw , Galium aparine
43. Trailing krameria, Krameria lanceolata
55. Scarlet globe mallow , Sphaeralcea coccinea
56. Needleleaf gilia, Gilia rigidula
82. Low stickseed, Lappula redowskii
83. Cupseed stickseed, Lappula texana
84. James cryptantha, Cryptantha jamesii
85. Cryptantha, Cryptantha minima
95. Nuttall evolvulus, Evolvulus nuttallianus
99. Spider antelope horns, Asclepias asperula var. decumbens
100. Green antelope horns, Asclepias viridis
110. Small soapweed, Yucca glauca
119. Common prickly pear, Opuntia macrorhiza
138. Common yarrow, Achillea millefolium
169. Plains daisy, Erigeron modestus
170. Trailing fleabane , Erigeron flagellaris
176. Rough false dandelion, Pyrrhopappus grandiflorus
177. Goat's beard, meadow salsify, Tragopogon dubius
182. Yellow hymenoppapus, Hymenoppapus flavescens
199. Blue false indigo, Baptisia australis var. minor 208. Rusty lupine. , Lupinus pusillus
209. Tallbread scurf-pea, Psoralea cuspidata
212. Slender milkvetch , Astragalus gracilis
220. Wild licorice, Glycyrrhiza lepidota
221. White locoweedCA, Oxytropis sericea
225. Plains larkspur, Delphinium virescens
226. Golden corydalis, Corydalis aurea ssp. occidentalis
247. Lemon painted-cup, Castilleja purpurea var. citrina
248. Lemon painted-cup, Castilleja purpurea var. purpurea
265. Red-seeded plantain, Plantago rhodosperma

May-July

15. Cut-leaved evening primrose , Oenothera laciniata
44. Rock sandwort, Arenaria stricta var. texana
57. Norton's flax, Linum pratense
120. Tree cholla, Opuntia imbricata
127. Plains hymenoxys, Hymenoxys scaposa
128. Paperflower, Psilostrophe villosa
266. Woolly indianwheat, Plantago patagonica