SYNOPSIS OF THE FLORA OF COLORADO. 67 



involucre in 3-4 series, lance-ovate, with acuminate, spiny tips, some- 

 wbat villous -pubescent, with narrow, scarions margins; rays 6"-8"long, 

 lance-ovate, yellow ; pappus a little shorter than the corolla and rather 

 longer than the very smooth acheniurn. " Low Mountains, lat. 39, w 

 Hall ct> Harbour, 258." Canon City, Brandegee. Meelian. 



APLOPAPPUS PARRYI, Gr. Stems 1-3 from a branching caudex, 

 subviscoits-puberulent above, 12'-1(>' high ; leaves almost glabrous, 

 very entire, lower ones oblanceolate or spatulate, tapering to the base, 

 obtuse, the others acute, upper ones broader at the base, partly clasp- 

 ing; heads numerous, corymbed, on short pedicels; scales of the cam- 

 pauulate involucre broad lanceolate, somewhat coriaceous, with some- 

 what leafy tips, loose; rays 15-20, small, yellow, narrowly-linear, but 

 little longer than the disk flowers; pappus white, not rigid. Hall <r 

 Harbour, 259 ; Parry; Canby. Chiann Canon, Porter. Twin Lakes and 

 Sierra Madre Range, Coulter. 



GRODELIA 1 SQUARROSA, Dinial. Glabrous and viscidly resinous: 

 sterns herbaceous from a perennial caudex, 1 to 2 high, corymbosely 

 branched above; leaves somewhat rigid, glaucous and punctate, radical 

 ones spatulate-lanceolate, narrowed into a petiole, dentate or incised, 

 cauline mostly oblong, sessile and partly clasping, rather obtuse, finely 

 toothed or spinulose-serrate; heads numerous, subglobose, 6" broad; the 

 scales very rigid, close-appressed, but with very long re flexed, squarrose, 

 subulate points, resinous; rays numerous, rather narrow: pappus of 2-4 

 very rigid, deciduous bristles or awns. Very common on the plains. 

 Hall <1> Harbour, 286. Denver, Dr. Smith. Colorado Springs. Porter. 

 B. H. Smith. On the Platte, Coulter. 



CHRYSOPSIS YILLOSA, Xutt. Extremely variable in tin 4 si/e and shape 

 of the leaves, in the number of the flower-heads, and in the kind and 

 amount of pubescence. It includes several nominal species. Common 

 everywhere at all elevations. Hall & Harbour r , 260; J)r. Smith; B. 

 H. Smith; Canby; Porter; Brandegee; Coulter. 



CONYZA 2 COTJLTERI, Gr., Proc. Am. Aca<L, v. 7,^ p. 355. (C. xub- 

 decurrens, Gr., PL FendL. p. 78, and PL Wright, 1, p. 102, non I>C.) Softly 

 viscous-pubescent; stem 1 to 2 high, with strict branches, leafy to the 

 top; leaves adnate, sessile, linear-oblong or the lower spatulate, numer- 

 ous, pinnatifid-dentate or incised; panicle crowded, virgate? heads small, 

 li"long; involucre shorter than the disk, scales hairy- viscous, linear, 

 acute. Canon City, Brandegee. 



BACCHARIS SALICINA, T. & G. FL X. Am. 2, p. 258. Shrubby, 

 smooth, branches angular; leaves mostly oblong-lanceolate, about I 7 



1 GKIXDKLIA, AYilld. Heads many-flowered : the ray-flowers generally present, pis- 

 tillate, the ligyle elongated ; disk-flowers ]>erfect. tlie corolla tubular-fnnnel-sha}ie(l. 

 5-toothed. Involucre sub<iloloso or hemispherical, the scales imbricated in niauyro\vs. 

 often Avith squarrose tips. Keeeptacle naked, flat, t'oveolafe. Style with lanceolate. 

 his])id appendages as long' as the sti^matic portion. Achenium smooth, ohlong, or 

 ovate, somewhat angled. PappOB of 2-8 smooth rigid, deciduous awns, shorter tlum 

 the disk-corollas. IJiennial (?) perennial or sunruticose, oftt.-n resiniferous, Mexican 

 and North American plants. Leaves entire or serrate, often punctate, the cauline ones 

 sessile. Heads corymbed at the ends of the branches, or solitary, mostly rather large. 



- CONY/A. Heads many-flowered, momec-ions; the exterior pistillate and fertile, in 

 many series, with a filiform truncate or 2-3 toothed corolla: a few of the central 

 Mowers staminate. sterile, but often styliferous or even fertile, with a tubular 5-toothed 

 corolla. Scales of the involucre in several series. Keceptacle Mat or convex, punctaie 

 or nmbrillate. Achenia compressed, attenuate at base, usually glabrous. Pappus a 

 single series of capillary scarcely scabrous bristles. Chiefly tropical herbs, with 

 branching stems, and variously incised leaves. Heads peduncied. corymbose or pani- 

 culate. Flowers yellow. T. and fi.FJ. \. Am. 



