June-September

2. Dayflower, Commelina erecta
7. Flax-leaved stenosiphon, Stenosiphon linifolius
8. Clammyweed, Polanisia dodecandra
36. Water speedwell, Veronica anagallis-aquatica
49. Puncture vine, Tribulus terrestris
63. Flannel mullein, Verbascum thapsus
64. Yellow wood sorrel, Oxalis stricta
65. Black Nightshade, Solanum ptycanthum
66. Hoary vervain, Verbena stricta
75. Narrowleaf four-o'clock, Mirabilis linearis
94. Common groundcherry, Physalis longifolia
114. Longleaf eriogonum, Eriogonum longifolium var. lindheimeri
155. Prairie sunflower, Helianthus petiolaris
157. Plains coreopsis, Coreopsis tinctoria
161. Golden aster, Chrysopsis villosa var. villosa
196. Wavyleaf thistle, Cirsium undulatum
197. Bull thistle, Cirsium vulgare
202. White sweetclover, Melilotus alba
242. Lanceleaf salvia, Salvia reflexa
253. American germander, Teucrium canadense
261. Texas croton, Croton texensis
262. James nailwort , Paronychia jamesii
263. Toothed spurge, Euphorbia dentata

115. Longroot wild-buckwheat, Eriogonum lachnogynum

July-August

38. American bugleweed, Lycopus americanus
106. Plains milkweed, Asclepias pumila
107. Broadleaf milkweed, Asclepias latifolia
203. Wild alfalfa, Psoralea tenuiflora var. tenuiflora
224. Silktop dalea, Dalea aurea

51. Intermediate caltrop, Kallstroemia parviflora
52. Stickleaf mentzelia, Mentzelia oligosperma
87. Blue verbena, Verbena hastata
139. Fetid marigold, Dogweed, Dyssodia papposa
142. Common goldenrod, Solidago missouriensis
147. Camphor weed, Heterotheca latifolia
173. Yerba de tajo, Eclipta prostrata
179. Prickly lettuce, Lactuca serriola
205. Wild bean vine, Strophostyles leiosperma
234. Common devil's claw, Proboscidea louisianica
235. Pitcher's salvia, Salvia azurea
245. Northern frog fruit, Lippia lanceolata
264. Yellow nutrush, Cyperus esculentus
269. Longleaf pondweed, Potamogeton nodosus
274. Pale smartweed, Polygonum lapathifolium