CATALOGUE. 3 295 
BreCcKMANNIA ERUCEZFORMIS, Host. (Watson’s Botany of 40th Parallel, 
Synopsis Flora of Colorado).—Saguache Creek, Colorado, 1873 (1177). 
Zuni, N. Mex., 1874 (163). 
Panicum ostusum, H. B. K.—Culms erect, about 18’ high, rather 
rigid; leaves linear, rigid, 3-6’ long; sheaths smooth; panicle erect, 5-6’ 
long, of 5-7 appressed branches; spikelets in pairs, sub-imbricated, obovate, 
obtuse, smooth; inferior flower of 2 palets, triandrous; perfect flower nar- 
row, longitudinally striate. Plant glabrous and somewhat glaucous. Rachis 
narrowly linear, very flexuous.—Sulphur Springs, Arizona, 1874 (549). 
PaNICUM MAXIMUM, var. BULBOSUM, Jacq.—Root bulbous; culm erect, 
3-4° high, rather wiry, naked above, glabrous; leaves narrowly linear, 
erect, 3-4’ long, smooth, or somewhat scabrous; panicle 3-6’ long, 
strict; rays mostly. single, strict, distant, branched to the base, sparsely 
flowered; spikelets mostly sessile, or very short-peduncled, ovate, acutish; 
glumes thin, purplish, obtuse, the lower about half as long as the perfect 
flower, upper one 5-nerved; sterile flower of two thin palets; perfect 
flower ovate-oblong, smooth.—Rocky Canton, Arizona, 1874 (296 and 298). 
Panicum Crus-GaLu, L.—Camp Crittenden, Arizona, 1874 (668). 
Panicum LeucopHzum, H. B. K. (P. lachnanthum, Torr.)—Culm 
ascending, branched below, glabrous, 15-2° long; leaves flat, 4-6" long; 
sheaths hairy; panicle oblong, erect, 3-6’, the branches alternate and 
loosely racemose; all the spikelets pedicellate, oblong; inferior glume 
very short, glabrous; the superior and the inferior palet of the abortive 
flower much attenuate and somewhat awned at the tip, densely cov- 
ered with very long, white, silky hairs; perfect flower ovate-lanceolate, 
acuminate and mucronate, glabrous, finely striate, and dotted longi- 
tudinally—Arizona, 1871 and 1872. Camp Bowie, Arizona, 1874 (489). 
Sprarta cAupaTA, R. & S.—Culm erect, 2°, flattened below, leafy ; 
leaves and sheaths retrorsely scabrous, flat, hairy at the mouth of the 
sheath, upper leaves involute-pointed; panicle cylindrical, 4-6’ long, 
dense or loose and interrupted, pale green; spikelets glomerate, oblong, 
acutish, 1 long; glumes herbaceo-membranaceous, cordate, mucronu- 
late, lower one 4 to 4 as long as the upper, upper one 5—T-nerved, per- 
fect flowers ovate, acute, finely punctate; bristles upwardly serrulate, 
