404 poACKi*:. 



Kmiity jiliinios niemhruiioiis, l-ncrvcHl, lirst ovutc, 1.7 nun. long, 

 Hi'oojul lunceoluto, 2.5 nun. lon^', with ii Hhortuwn; ilorot oviite-cUip- 

 tical. •^5 nun. loii^', with short stilT Imirs iit the hasc; flonil <rhuno 

 ohscuri'Iy :{-ticrvt'il, gibbous in the iniildic, cilitito on I lit- iiiiil nerve 

 1111(1 niiirgiiiri wit!) hairs towiinlu the snininit '.' inni. htng, apex '.2- 

 toothed. iiwn 5 inni. long; piileu as long as its gliiiinc cnipty glnnio 

 above the flower truncate, with an awn 4 nini. long, radiilla tt-rmi- 

 nated by a second rudimentary gliiine. (Jrain elliptical. 



Now Mexico, I7^sr// for V. S. Dept. Agricul. 4!)S; Arizona, 

 Tiniiiu'i/ ; Calil'oruiu, Orentt ; Moxieo, Palmer 118, 133, Sehaffir 



io:3. 



Texas, Arizona, and Mexico. 



"Naturally selecting moist places of plains and mesas, this annual 

 falls into line with the needs of tillage. Its rather succMilent stems 

 and leaves are acceptable to grazing animals. Owing to its s|»read- 

 ing hal)il, it would hardly servo as a grass for mowing. I-laten by 

 all kinds of stock. It is not so abundant iu ("hihuahua, a regi<»n 

 of elevated tablelands and mountains, as on tiie dry mesas and 

 desert hills of southern Arizona and western Sonora. 'IMiere tlie 

 Indians bring it during winter and spring long distances into tlie 

 towns to sell, the men tying the bundles behind and beside them on 

 their ponies and the women carrying them on their backs or heads 

 and trudging painfully behind the ponies, ilow many times I 

 have contended with the horrid musquite bushes, to gather an 

 armful of this grass to carry joyfully to my hungry and jaded 

 horsesi*' C. G. Puix(JLE. 



2. C. polydactyla (L.) Sw. Prod. 20 (1788). Andropofinv pohj- 

 dwtiihni L. Amoen. Acad. 5:412 (1759) ; Sp. PI. Kd. 2, 1483 (17(J3). 



Culms erect, simple, glabrous, 45-100 cm. high. Sterile shoots 

 few, leaves of the culm 7, sheaths nearly smooth, strongly ciliate at 

 the throat; lignle very short, blades mostly involute, 15-20 era. 

 long, 7-10 mm. wide, pungont-pointed, the upper much shorter. 

 Spikes umbellate, 13-20, sessile, 9-12 cm. long, the rach is scabrous. 

 Spikelets crowded ; empty glumes linear-lanceolate. 1-nerved. first 

 2 mm. long, second 2.5 mm. long; floral glume 2.2 mm. long, 3- 

 uerved, broadly oval, ciliate on the keel, the hairs on the marginal 



