FLORA OF COLORADO. 



loosely branched from the base and caespitose, rooting below, the flower- 

 ing shoots elongated, leafy, erect, pubescent; leaves elliptic-oblong, 

 acute, sparingly villous with long silky hairs; racemes in pairs, erect, 

 several-flowered, bracteate at base; nutlets with indexed, ciliate teeth 

 on the margins. 



Var. ARETIOLDES, Hook. Densely c;espitose, 3" -2' high, covered with 

 soft silky hairs; leaves densely imbricated below, elliptical-lanceolate, 

 acute; racemes few-flowered, short-exserted ; tube of the corolla scarcely 

 exceeding the calyx, limb bright blue, l"-3" in diameter; nutlets nearly 

 V in length, concave on the back, the toothed margin conspicuous. 

 High alpine. Hall & Harbour, 440; Parry, 278. James' Peak, at 12,000 

 feet altitude, Chicago Lakes, at 13,000 feet, and Mount Lincoln, at 14,000 

 feet, Coulter. Saugre de Cristo Pass, Hrandegee. Median. Gray's Peak, 

 at 12-13,000 feet altitude, RedfieM. 



ERITRICHIUM ANGUSTIFOLIUM, Ton-., Pacif. E. R. #wr., 5, p. 363. 

 Annual, very hispid, with spreading hairs; stem 3'-! high, suberect, 

 widely branched; leaves linear; racemes terminating the branches, 

 usually forked and at length elongated; flowers sessile, bractless; calyx 

 2^-3" long in fruit, very hispid with yellowish hairs, lobes lanceolate- 

 linear ; corolla white, C^-12 77 long, falling early ; stamens inserted near 

 the base on very short filaments; nutlets 1-4, oblong, acute, V long, 

 convex and minutely papillose on the back, attached to the style to the 

 middle by a ventral groove. Near Denver and Colorado Springs, Porter. 



ERITRICHIUM CRASSISEPALUM, T. & G. Pacif. R. R. Sum\, 2, p. 171. 

 Annual, very hispid, with spreading hairs; stem much branched from 

 the base, branches ascending, 3'-o' high; leaves obovate-lauceolate, 

 rather obtuse; racemes bracteate except the upper portion; fructiferous 

 calyx ventricose at base, closed and contracted above the middle, the 

 segments thickened and indurated on the back, finely pilose on the mar- 

 gins, with large, strong, hispid hairs on the back ; nutlets heteromor- 

 phous, ovate, convex on the back, 3 of them muriculate-granulate, the 

 4th larger and nearly or quite glabrous. Hall & Harbour. 434. Denver 

 and Colorado Springs, Porter. Canon City, Brandegce. 



ERITRICHIUM GLOMERATUM, DC., Prod. 10, p. 131. Perennial or bien- 

 nial; stem simple, erect, 6'-lS' high, usually solitary and rather stout 

 and rigid, very hirsute with spreading hairs, leafy especially at base : 

 leaves 2'-4' long, alternate, oblong or linear-spatulate or ol lanceolate, 

 sub acute, hirsute and usually more or less appressed, pubescent ; spike- 

 lets 5-9 flowered, lateral axillary, clustered, more or less peduncled, and 

 usually bifurcated, and the upper ones sessile ; flowers 2 // -4 // long, 

 nearly sessile ; calyx very hispid, 5-parted, the linear-lanceolate lobes 

 equaling the corolla-tube, much enlarged in fruit; limb of the white co- 

 rolla broad and expanded, truncated scales of the throat conspicuous ; 

 nutlets large, 1J" long, ovate and narrowed above, but obtuse, more or 

 less rugose and tuberculated on the back, which is surrounded by an 

 acute, slightly raised margin, sulcate ventrally and attached to the 

 elongated style to the middle. Hall & Harbour, 438 in part. Colorado 

 Springs, Porter. 



Yar. VIRGATUM, Porter, (E. virgatum, Porter, Haydeti's Rep., 1870, p. 

 479.) Stout ; stein erect, 2-3 high, very hispid ; inflorescence much 

 elongated, virgate, spike-like, l-2 in length; cymes many, conglomer- 

 ated, few-flowered, lower ones short-peduncled, upper ones sessile, very 

 much shorter than the long, spreading, bracteal leaves, which become 

 narrowly linear above. This variety is very common on the plains at 



