Flora of Denver. 43 



334. Abronia micrantha TORK. Wings of fruit fleshy, pink 

 veined, forming a round head, flowers small. Not common. 

 Summer. 



AMARANTACE/E. (Amaranth Family.) 



335. Amarantus retroflexus L. (PIG-WEED.) Tall and 

 stout, spikes at tips of branches thick and erect, bracts awned. 

 A common weed. Fall. 



336. Amara'ntus albus L. Rather low, diffusely branch- 

 ing, leaves and bracts awned, clusters of flowers small and 

 axillary; seed wrinkled, black or dark red and shiny. Com- 

 mon in the fall. 



337. Amarantus blitoides WATSON. Prostrate, leaves ob- 

 tuse with a very short awn, clusters of flowers axillary; seed 

 shining, black, not wrinkled, larger than the preceding. Com- 

 mon in the fall. 



338. Amarantus Torreyi BENTH. Spreading from the base 

 with long branching ascending stems, often dioecious, the 

 spikes at the ends of the branches very long and slender, often 

 gracefully curved- In sandy ground. North Denver and 

 Capitol Hill near Eighth Avenue. Fall. 



339. Acnfda tuberculata MOQ. North Denver. Fall. 



340. Froelichia gracilis MOQ. White-woolly, leaves clus- 

 tered near root, crests on the calyx stiff. 



341. Frcelfchia Floridana MOQ. Stem leafless above, teeth 

 on the calyx irregular. 



CHENOPODIA'CE^'E. (Goosefoot Family.) 



342. Cyclocloma platyphyllum MOQ. The diffusely 

 branching purple or green tumble weed. Nortli Denver. 

 Fall. 



343. Chenopodium album. (LiAMB's-QuARTER.) Com- 

 mon. Introduced probably. 



