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SOME COLORADO GRASSES. 
SPOROBOLUS CRYPTANDRUS (Gr.). 
Culms 2 to 3 feet high, less purplish than Ouspidatus ; 
leaves scabrous, especially on the margins, linear to fili¬ 
form at apex, 1 foot or more long above, shorter at base, 
hairy at base; sheaths shorter than the nodes, the lower 
with membranous margin; ligule an extremely short, 
ciliate fringe; panicle lead color, enclosed in the sheath 
of the upper leaf; rays mostly in pairs; outer glume 
unequal, acute. 
This in tufts, from root-stocks. 
[See cut on opposite page.] 
ERAGROSTIS PURSHII (Schrad.). 
Stems geniculate at base, branching, about 2 feet 
high ; leaves linear, smooth ; sheaths villous at the throat; 
panicle slender, spreading, elongated; lower branches 
hairy in the axils; pedicels capillary; spikelets five to 
eighteen-flowered; outer glumes ovate, acute; flowering 
glume three-nerved. 
This species is abundant in garden soils, in company 
with Eragrostis poseoides, var. Megastachya, at Canon City. 
ERAGROSTIS PO^OIDES (Beauv.). 
Growing in tufts in rich garden soils; culms genicu¬ 
late, decumbent, 1 to 2° long; sheaths pilous at throat; 
ligule short, bearded; panicle spreading; branches capil¬ 
lary, solitary or mostly in pairs; spikelets about twenty- 
flowered ; pilous in the exils. 
This species has a peculiar odor. A weed in rich 
garden soil. Of no agricultural value. 
