228 



MISC. PUBLICATION 200, U. S. DEPT. OF AGRICULTURE 



Figure 304. — Enneapogon desvauxii. Plant, X Yi\ spikelet, perfect floret, and cleistogene, X 5. (Purpus 



8272, Ariz.) 



producing its own sex. This should be ing to the hard awns. 



investigated. Type species, Sclero- 1. Scleropogon brevifolius Phil. 



pogon brevifolius. Name from Greek Burro grass (Fig. 305.) Culms erect, 



skleros, hard, and pogon, beard, allud- 10 to 20 cm. tall, tufted, producing 



