SYNOPSIS OF THE FLORA OF COLORADO. 143 



with its awn, about twice longer. Denver, Dr. Smith. Canon City, 

 Brandegee. 



YASEYA 1 COMATA, Thurber. Proc. Acad. Phil, March, 1863, p. 79. 

 Culms l-2 high, erect, slender, from a creeping rhizoma, retrorsely pu- 

 bescent at the nodes; sheaths scabrous, as long as the iuternodes; ligule 

 short, fringed; leaves 3'-4'long, dull green, rough on both sides; panicle 

 lead-colored, '6'-^' long; branches solitary, appressed, densely flowered; 

 spikelets short-pediceled, compressed, lj" long, pubescent; glumes nar- 

 row, very acute, serrulate on the keel, lower one a little longer; awn 

 rough and flexuose, purplish, 3"-4" long. Hall & Harbour. 



CALAMAGROSTIS CANADENSIS, Beauv. Canon City, Brandegee. Twin 

 Lakes and Sierra Madre Range, Coulter. 



CALA3IAGROSTIS STRICTA, Trin. Canon City, Brandegee. Divide 

 between Denver and Colorado Springs, Porter. 



CALAMAGROSTIS SYLVATICA, DC. Gray, Proc. Am. Acad. 6, p. 0. 

 Root creeping; culm simple, erect, rather rigid, glabrous or scabrous be- 

 low the panicle; leaves mostly revolute, scabrous; panicle contracted, 

 2'-4 / long, the brauchlets erect ; glumes ovate-lanceolate, sharply acu- 

 minate, about 3" long; lower palet scabrous, rather rigid, awnednear 

 the base, hairs about one-fourth as long as the palet; rudiment elon- 

 gated, plumose; awn bent and twisted, exceeding the glum es. Denver, 

 Dr. Smith; B. H. Smith ; Canby. Caiioii City, Brandegee. Along the 

 Platte, Coulter. 



CALAMAGROSTIS LONGIFOLIA, Hook. Xear Denver, Dr. Smith. Col- 

 orado Springs, Porter. Sierra Mojado, Brandegee. 



ORYZOPSIS MICRAXTHA, Thurber. ( Urach ne micrantlia, Trin. ) u Leaves 

 linear-setaceous, convolute; branches of the panicle in pairs, many-flow- 

 ered; spikelets shining, florets smooth, a little shorter than the linear, 

 acutish glumes, awn about thrice longer than the glumes ; cells of the 

 anthers naked at the apex.-' Steud. Glum., 122. Hall & Harbour, 

 63 4. Chiann Canon and Glen Eyrie, Porter. 



ERIOCOMA 2 CUSPIDATA, Nutt. Perennial ; culms l-2 high, simple, 

 rather rigid and somewhat scabrous; sheaths scabrous, equaling the 

 internodes, the upper ones often dilated ; leaves narrow, convolute, 

 elongated, (2 / -18 / ;) panicle frequently included at base, dichotomously 

 branched, the spikelets solitary upon capillary peduncles; glumes 2 // -4' / 

 long, usually more or less purple, pubescent; outer palet deep brown, 

 \y long, the nearly straight triquetrous awn \^"2" long. Hall & Har- 

 bour, 633. Canon City, Brandegee. On the plains and in the mountains, 

 Porter. Platte River, near Denver, Dr. Smith. 



STIPA MONGOLICA, Turcz. (Ptilayrostis Mongollca, Griseb. in Ledeb. FJ. 

 Ross.} Slender, 1 high, with filiform leaves and a loose few-flowered 

 panicle; the membranous glumes obtuse, about 2" long, sub-equal, pur- 



'VASEYA, Thurber. Spikelets 1-nowered, membranous-herbaceous, in a narrow 

 crowded panicle. Glumes 1-nerved, equaling or exceeding the flowers,^arly equal, the 

 lower usually a little longer. Callus oblique, densely bearded with silky Murs equaling the 

 flower. Palets equal, the lower 3-nerved, attenuate into a long awn, the upper aoiz- 

 miuate. Stamens 3. Ovary stipitate. Stigmas plumose with long simple hairs. Per- 

 ennial from running root-stocks. 



-ERIOCOMA, Nutt. Spikelets 1-flowered, in a loose, open panicle. Glumes 

 nearly equal, strongly 3-nerved, subventrieose at bast-, attenuate-rostrate above, some- 

 what exceeding the pei-sistent flower. Callus short, thick. Palets rigid, coriaceous, 

 the outer oval, densely covered throughout with long, white, silky hairs, and terminated 

 with a short, stout deciduous awn, the upper included, narrower, scarcely sh>n r. 

 Stamens 2-3; anthers oblong-linear, bearded at the apex. Scales c<;nspicuous, ix.nly 

 equaling tlie oblong seed. 

 10 FC 



