30 
POACEAE. 
Saguache Creek; Fort Collins; Denver; Durango; vicinity of Boulder; Gun¬ 
nison; Cottonwood Creek; Manitou; Grand Junction. 
8. Sporobolus confusus Vasey. (S', ramulosus of Coult. Man.; not Kunth.) 
In wet, sandy places from Neb. to Mont., Tex. and Ariz.; also in Mex.—Alt. 
4000-8500 ft.—Colorado Springs; Saguache Creek; Cimarron; Minnehaha; 
Ouray; Gunnison; Piedra; Buena Vista; mountains of Larimer Co.; Twin 
Lakes; Alamosa; vicinity of Fort Collins; Table Rock. 
27. P 0 LYP 0 G 0 N Desf. Beard-grass. 
1. Polypogon monspeliensis (L.) Desf. In waste places from N. H. to 
B. C., S. C. and Calif.—Alt. about 5000 ft.—Fort Collins; Poudre River. 
28. CINNA L. Wood Reed-grass. 
1. Cinna latifolia (Trev.) Griseb. ( C . pendula Trin.) In damp woods 
from Newf. to B. C., N. C. and Utah.—Alt. 4000-7500 ft.—Empire; Buffalo 
Pass road, Routt Co.; Idaho Springs; Salida. 
29. AGROSTIS L. Red-top, Herd-grass, Tiorin, Bent-grass, Hair-grass, 
Tickle-grass. 
Palet conspicuous, at least one-third as long as the flowering glume. 
Panicle large; branches verticillate; spikelets about 3 mm. long; stem 3-10 
dm. high. 1. A. alba. 
Panicle small and narrow; branches scattered or in pairs; spikelets about 2 
mm. long; stem 0.6-3 dm. high. 2. A. depressa. 
Palet minute or wanting. 
Branches of the contracted panicle short, at least some of them spikelet-bearing 
to the base. 3. A. asperifolia. 
Branches of the panicle more slender, naked below. 
Flowering glume awnless or short-awned; the awn not exceeding the spike- 
let. 
Branches of the panicle filiform, branched far above the middle, at last 
divaricate or reflexed ; plant usually over 3 dm. high. 
4. A. hiemalis. 
Branches short, 1—3 cm. long, ascending; plant 1-3 dm. high. 
5. A. tenuiculmis. 
Flowering glume with a long, bent awn, which exceeds the spikelet by one- 
half. 6. A. canina L. 
1. Agrostis alba L. In wet meadows from Newf. to B. C., Fla. and Calif.; 
native also of Europe and cultivated.—Alt. 4000-8500 ft.—Gunnison; Golden; 
Fort Collins; Engelmann Canon; Georgetown; Ouray; Twin Lakes; Mani¬ 
tou ; gulch west of Soldier Canon; Baxter’s ranch. 
2. Agrostis depressa Vasey. In wet mountain meadows and along brooks 
from Wyo. to Utah and Colo.—Alt. 9000-11,000 ft.—Georgetown; Beaver 
Creek. 
3. Agrostis asperifolia Trin. ( A . exarata Coulter, in part) In wet mead¬ 
ows from Man. to N. M. and Calif.—Alt. 4000-10,500 ft.—Beaver Creek; 
near Pagosa Peak; Arboles; along the Lower Cucharas River; Twin Lakes; 
Fort Collins; gulch west of Soldier Canon. 
