140 SYNOPSIS OF THE FLORA OF COLORADO. 



CAREX TENELLA, Schk. Hall & Harbour, 601. 



CAREX CANESCENS, L. Hall & Harbour, 602. 



CAREX DEWEYANA, Schw. Hall & Harbour, 596. 



CAREX GAYANA, Dew. Boott, III., pt. 3, p. 126, t. 411. Spike (some- 

 times wholly pistillate) ovate, capitate, fuscous-ferrugineous; spikelets 

 staminate at the apex or wholly staminate or pistillate, many, closely 

 crowded, lower ones compound ; bracts setaceous shorter than the spike; 

 stigmas 2; perigynia somewhat rounded, with a short conic beak, orifice 

 very small, hyaline, deeply cleft before, scabrous on the margins above, 

 shining, spongy, chestnut-colored; scale ovate, acuminate, cuspidate, 

 brown-ferruginous, with a whitish hyaline apex broader and longer than 

 the perigynium. Hall & Harbour, 595. 



CAREX STELLULATA, L., var. SCIRPOIDES, Carey. Wet Mountain 

 Valley, Brandegee. 



CAREX BONPLANDII, Kunth. Spikes of 8-12 blackish-purple or rusty 

 spikelets, more or less bracted, staminate at base ; stigmas 2 ; perigynium 

 ovate or ovate-lanceolate, gradually tapering to a beak, the orifice entire 

 and deeply cleft in front, wingless, more or less serrate on the margins 

 at the apex, nerved, plano-convex, equaling the ovate subacute scale; 

 acheniuni oblong-ovate, contracted at base, "biconvex and apiculate. 



Var. MINOR, Gluey. Spikelets small, fewer ; bracts scale-like. Hall 

 & Harbour, 591. 



CAREX LEPORINA, L. Fl. Suec. Koot woody-fibrous, spike oblong, 

 tawny-brown, composed of 5-6 (rarely more) nearly round or obovate 

 spikelets, staminate at base, alternately contiguous, sometimes aggre- 

 gated into an elliptical head, the highest club-shaped; bracts sometimes 

 filiform, not equal to the spikelets; stigmas 2; perigynium ovate, gradu- 

 ally tapering to a beak from an ovate base, the orifice obliquely cut, 

 winged, and serrated upon the margins above the middle, nerved upon 

 both sides, tawny, quite equaling the ovate-lanceolate acute scale, 

 which is whitish-hyaline with tawny margins ; "acheniurn oblong, lenticu- 

 lar, stipitate, shining, chestnut-colored, apiculate at the base of the 

 style. Colorado, at 12,000 feet altitude, Vasey, fide Olney. 



CAREX FESTIVA, Dew. Csespitose; spike ovate or nearly round, 

 naked or bracteate, composed of 6-12 nearly round androgynous spike- 

 lets, stamiuate at base, closely aggregated in to ahead; stigmas 2; perigy- 

 nium ovate-elliptical, tapering to a beak, the whitish-hyaline orifice ob- 

 liquely cut anteriorly and finally bideutate, slightly nerved on both 

 sides, winged, serrated on the margins above the middle, rusty-tawny, 

 a little exceeding or about equaling the lanceolate obtuse whitish-hya- 

 line rusty-margined scale ; acheniumoblong-obovate, abruptly apiculate, 

 rusty-colored. Hall & Harbour, 589 and 590. Ute Pass, Porter. White 

 House Mountain and Mount Lincoln, at 12,OUO feet altitude, Coulter. 

 Breckeiiridge, Brandegee. Gray's Peak, Dr. Smith. Pike's Peak, Canby. 



CAREX STENOPHYLLA, Wahl. Csespitose, 4'-6' high, stolouiferous 

 from the base ; spikes androgynous, staminate above, aggregated in an 

 ovate or oblong head ; stigmas 2; perigynium ovate, convex on the back, 

 9-11-ner^ed, serrulate-scabrous on the margin; beak white-membran- 

 aceous at the apex, emarginate on the back; scales acute; culm smooth, 

 somewhat scabrous above. Hall & Harbour, 597. 



CAREX ATHROSTACHYA, Olney. Root fibrous; culm l-2 high, 

 leafy; spike ovate, straw-colored, rusty-tinged, composed of 8-20 

 crowded spikelets, the lowest sometimes forming a remote distinct 

 head; bracts 3-5, leafy, involucre-like, expanded at base into a hyaline 



