288 BOTANY. . 



little exceeding the palet, lower palet of sterile fl. with 3 long, coarse awns 

 3" long (2024, Coll. C. Wright, N. Mex., 1851) —Camp Bowie, Arizona, 

 1874 (484 bis). 



Bouteloua oligostaciiya, Toit. — Utah, 1871 and 1872. Twin Lakes, 

 Colorado, 1873 (1113). Sulphur Springs, Arizona, 1874 (548). 



Bouteloua hiesuta, Lag. — Chiricahua, Arizona, 1874 (512). 



Bouteloua fcena, Torr. — Leaves glabrous; spikes 2-3, oblong, falcate, 

 spreading; rachis nearly half the length of the spikes; upper glume nearly 

 as long as the perfect flower, with two rows of piliferous glands on the 

 back; lower palets deeply 3-cleft, the segments lanceolate and mucronate, 

 hairy on the margin, neutral flower of two truncate emarginate valves, 

 with a 2-valved rudiment of a third flower, and 3 short, stout awns 

 (Torrey in Emory's Report). — Arizona, 1871 and 1872. 



Chloris alba, Presl. — Spikes umbellate-fasciculate, numerous (8-12), 

 the peduncle enclosed in a broad, compressed sheath; spikelets 2-flowered; 

 upper glume nearly as long as the flowers, 2-toothed, with a short awn 

 between the teeth; lower palet of the perfect flower obscurely 3-nerved, 

 gibbous in the middle, the margin ciliate, with long hairs toward the sum- 

 mit; awn 3 times as long as the palets; neuter flower broad and truncate, 

 enclosing a short aristiform rudiment (Torrey in Emory's Report). — 

 Nevada and Arizona, 1871 and 1872. Cienega, Arizona, 1874 (578). 



Buchloe dactyloides, Eng. (Synopsis Flora of Colorado). — Summit, 

 Colorado, 1873 (1115) 



Tricuspis pulchella, Torr. — A beautiful little grass, with densely 

 ceespitose culms and few-flowered panicles, which are crowded among the 

 fasciculate leafy branches (Torr.). Leaves plane, subulate rigid, scabrous; 

 panicles subspicate, terminating the leafy branches; spikelets 6-7-flowered; 

 glumes lanceolate, acuminate, smooth, equal; lower valve oblong, white- 

 hairy along the middle and base, apex bifid, awned between the lobes ; 

 awn straight, exceeding the lobes ; upper valve oblong, acute. — Arizona, 

 1871 and 1872. Cienega, Arizona, 1875 (575). 



Graphephorum flexuosum, Thurb. (Synopsis of the Flora of Colo- 

 rado).— Fort Garland, Colorado, 1873 (1116). 



Kxeleria cristata, Pers. — Chiricahua, Arizona, 1874 (516). 



