Numerical list
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Inconspicuous flower
Flowers in round clusters, plants trailing
255. Sensitive brier. Schrankia nuttallii
Flowers in round clusters, plants less than 12 in. high
256. Mountain corkwing. Cymopteris montanus
258. Rabbit tobacco. Evax prolifera
259. Black medic. Medicago lupulina
Flowers in round clusters, plants more than 12 in. high
260. Illinois bundleflower. Desmanthus illinoensis
261. Texas croton. Croton texensis
262. James nailwort. Paronychia jamesii
263. Toothed spurge. Euphorbia dentata
264. Yellow nutrush. Cyperus esculentus
Flowers in long clusters, plants less than 12 in. high
265. Red-seeded plantain. Plantago rhodosperma
266. Woolly indianwheat. Plantago patagonica
267. Nettle leaf noseburn. Tragia ramosa
268. White polygala. Polygala alba
269. Longleaf pondweed. Potamogeton nodosus
Flowers in long clusters, plants more than 12 in. high.
270. Poison ivy. Toxicodendron rydbergii
271. Lead plant. Amorpha canescens
274. Pale smartweed. Polygonum lapathifolium
276. White sagebrush. Artemisia ludoviciana
277. Annual eriogonum. Eriogonum annuum
281. Purple prairie clover. Dalea purpurea
283. Western sagebrush, Prairie sagewort. Artemisia campestris
284. Sagebrush. Artemisia carruthii
285. Sandhill sage. Artemisia filifolia
[Numerical index]