CATALOGUE. 285 
pubescent below, especially on the nerves, nearly equal, lower one 3-nerved, 
upper 2-nerved; awn 7 to 10” long. Panicle looser and awns longer 
than in M. sylvatica—Camp Crittenden, Southern Arizona, 1874 (681). 
VaseyA comatTa, Thurb. (Watson’s Botany 40th Parallel) ——Gravelly 
shores, Twin Lakes, Colorado, 1873 (1092). 
CALAMAGROSTIS CANADENSIS, L., var. Ropusta— -A robust form, ap- 
proaching C. Langsdorffii, Trin —Twin Lakes, Colorado, 1873 (1093). 
CaLamacrostis stricta, Trin—-Twin Lakes, Colorado, 1873 (1096). 
Saguache Creek, Colorado, 1873 (1097). 
CALAMAGROSTIS STRICTA, var. ROBUSTA.—Culms 2° high, stout, sca- 
brous, as are the leaves and sheaths; leaves erect, 10-15’ long, plane or 
somewhat involute, slender pointed; panicle strict, rigid, rather dense ; 
spikelets larger and coarser than in the preceding. This approaches C. 
conjfinis.—It occurs in many collections from the Rocky Mountain region. 
Twin Lakes, Colorado, 1873 (1099). Some specimens are affected with 
an ergot (1101). 
CALAMAGROSTIS STRICTA, var. BREVIOR—Very near the preceding 
variety, but with shorter, more rigid culms, and panicle partly included in 
upper sheath. This was in an earlier report referred to C. Lapponica, 
Trin.—Mosquito, Colorado, 1873 (1098). 
CaLamacrostis syLyaticA, DC. (Watson’s Botany 4(th Parallel, 
Synopsis of Flora of Colorado).—Mosquito, Colorado, 1873 (1094) ; South 
Park, Colorado (1095). 
Ertocoma cusprpata, Nutt. (Watson’s Botany 40th Parallel, Synop- 
sis of Flora of Colorado).—Nevada and Arizona, 1871 and 1872; Denver, 
Colorado, 1873 (1102). 
Oryzopsis micranrHs, Thurb. (Synopsis of Flora of Colorado).— 
Santa Fé, N. Mex., 1874 (44). 
Sripa AVENACEA, L.—Camp Grant, Arizona, 1874 (456). 
Stipa comaTa, Trin. (Watson’s Botany 40th Parallel)—Agua Azul, 
N. Mex., 1874. 
Srrpa spartea, Trin.—Utah, 1871 and 1872; Twin Lakes, Colorado, 
1873 (1103). 
Sripa viripuna, Trin. (Watson’s Botany 40th Parallel, Synopsis Flora 
