286 BOTANY. 
of Colorado).—Twin Lakes, Colorado, 1873 (1104); Arkansas Valley 
(1105); Mosquito, Colorado (1106); alpine woods, Colorado (1107 and 
1108). Se 
Stipa Moneouica, Turez. (Watson’s Botany 40th Parallel, Synopsis 
of Flora of Colorado).—Twin Lakes, Colorado, 1873 (1100). 
Sripa‘ pennata, L., var.—This species, of which little was collected, is 
easily distinguished by the awns, which are 6 inches or more long, twisted 
for 14-2 inches below, the upper part flat and beautifully plumose- 
pennated.—Arizona. Locality not recorded. 
Stipa OCCIDENTALIS, Thurb. (Watson’s Botany 40th Parallel).—Nevada, 
1871 and 1872. 
ARISTIDA PURPURASCENS, Poir.—Arizona, 1871 and 1872. 
ARISTIDA PURPUREA, Nutt. (Watson’s Botany 40th Parallel, Synopsis 
Flora of Colorado).—Camp Bowie, Arizona, 1874 (481); Camp Grant, 
Arizona, 1874 (374). 
ARISTIDA PURPUREA, Nutt., var. LonaIseTa. (A. longiseta, Steud.)—Per- 
haps a distinct species—Denver, Colorado, 1873 (1110); Santa Fé, N. 
Mex., 1874 (1). 
AristipA Humpotptiana, Trin. (A. divaricata, H. B. K.)\—Root fibrous; 
culms czespitose, erect, simple, 1-2° high; leaves convolute, rather short 
and rigid; panicle about 1° long, sheathed at the base, rays rather rigid, 
in twos or threes, mostly long (3-6’), flower bearing above the middle, 
inferior ones erect, superior ones open or spreading, most of the branch- 
lets with 2-3 spikelets each; glumes equal or nearly so, acute or awl- 
pointed, 5-6” long, purplish, equal to the flower or slightly longer; palet 
scabrous; awns sub-equal, middle ones about 8”, lateral ones 4-5” long — 
Cottonwood, Arizona, 1874 (348). : 
SPARTINA GRACILIS, Trin. (Watson’s Botany 40th Parallel, Synopsis 
Flora of Colorado).—Nevada, 1871; Saguache, Colorado, 1873 (1111). 
Preurapnis Jamesu, Torr. (Watson’s Botany 40th Parallel, Synop- 
sis Flora of Colorado).—Arizona, 1871 and 1872; Santa Fé, N. Mex., 1874 
(17); Agua Azul, N. Mex., 1874 (132). 
BovureLova curtirenputa, Gr.—Arizona, 1871 and 1872; Camp Crit- 
tenden and Cienega, Arizona, 1874 (284, 586, 677). 
