82 SYNOPSIS OF THE FLORA OF COLORADO 



angles. Gray's Peak, Dr. Smith. Twin Lakes, Bear Creek, Long's Peak, 

 and Ute Pass, Coulter. Wet Mountain Valley, Brandegee. 



Var. CROCEUS, Gr. Proc. Acad. Phil., March, 1863, p. 68. Smooth ; rad- 

 ical leaves roundish-oval, more or less crenately-toothed or incised \ 

 corymb rather compact; rays saffron-yellow. Hall & Harbour, 332. 

 South Park, Porter. Wet Mountain Valley, Brandegee. Twin Lakes, 

 Mount Lincoln, at 12,000 feet altitude, and White House Mountain, at 

 13,000 feet, Coulter. 



SENECIO LONGILOBUS, Benth. Glabrous ; stems 2-2J high, usually 

 much branched; branches erect; leaves linear, somewhat tapering to 

 the base,2'-4/ in length, l"-2" wide, entire or pinnately 3-9 parted, divis- 

 ions linear, divaricate; heads corymbose, calyculate, with a few small 

 scales, 5" long; scales of the involucre glabrous, linear-lanceolate, with 

 scarious margins, finely striate; pappus bright white; achenia strigose- 

 cauesceut. Branches of the panicle often flexuose. Canby ; B. H. 

 Smith; Hall & Harbour, 328. Plains around Denver, Dr. Smith. Along 

 the Platte, Coulter. 



SENECIO FILIFOLIUS, Nutt., var. JAMESII, T. & G. Suffruticose, 

 much branched, densely tomentose-canescent; branches very leafy to the 

 summit; leaves narrowly linear, 3' long, entire or pinnately-parted, divis- 

 ions 3-9, margins revolute; heads in a terminal corymb, rather large; 

 involucre somewhat calyculate; rays 7-8, linear, rather long; acheuia 

 caneseently-strigose. Gafion Gity, Brandegee. 



SENECIO CERNUUS, Gr. Silt. Jour., (N. S.,) v. 33, p. 10. Glabrous; stem 

 slender, 1 high, paniculate at the summit; leaves lanceolate or linear- 

 lanceolate, tapering at the base into a long petiole, subciliate on the 

 margins, sparingly toothed or nearly entire, lower leaves, including the 

 petiole, 4'-7 / ,long, V broad; heads numerous, small, scarce 6" long, nod- 

 ding, discoid; pedicels 1-2 bracteolate; involucre with a few minute 

 bracteoles at base ; achenia very glabrous. Hall & Harbour, 320 ; Parry, 

 52; Dr. Smith. Ute Pass, Porter. Twin Lakes, Porter. 



SENECIO CANUS, Hook. Whitish-tomentose throughout ; stems tufted, 

 2 / -12 / high; radical leaves oblong-spatulate, entire, cauline sessile, lan- 

 ceolate, partly clasping, sinuate-piimatifid or somewhat toothed towards 

 the base; heads few, in a simple corymb; involucre nearly ecalyculate; 

 rays 8-12, short; achenia glabrous. Hall & Harbour, 330. a Alpine and 

 sub-alpine," Parry, 20. 



SENECIO EREMOPHILUS, Richards. Perennial, glabrous ; stem stri- 

 ate, often purplish, l-4 high, corymbosely branched toward the sum- 

 mit, leafy; leaves short-petioled, 2'-3' long, 6 // -12 // wide, lower some- 

 times larger, deeply incised, with unequal, ovate-lanceolate, toothed seg- 

 ments, sometimes deeply parted, with linear segments which are sharply 

 toothed; heads many, in compound corymbs ; involucre cylindrical-bell- 

 *bjined ; calyculate bractlets few ; scales often blackish -tipped and 

 sphacelate ; rays 7-9, rather long ; achenia striate, glabrous. Hall & 

 Harbour, 327. Near Denver, Dr. Smith. Ute Pass, Porter. Canon Gity, 

 Brandegee. Near Mount Lincoln, Coulter. 



SENECIO FREMONTII, T. & G. Perennial, glabrous; stems 1-several, 

 3'-15' high, leafy to the top, often decumbent; leaves sessile, oblong 

 or obovate-spatulate, somewhat fleshy, laciniate-dentate or obscurely 

 toothed, upper ones l'-2'long, lower ones gradually smaller ; heads soli- 

 tary or few, on very short, erect peduncles ; involucre bell-shaped, 4"-6" 

 long, sparingly bracteolate ; rays 10-16, yellow ; achenia glabrous. "Al- 

 pine."- Hall & Harbour, 322. Dr Smith. Twin Lakes, Coulter. 



