86 SYNOPSIS OF THE FLORA OF COLORADO. 



achenia oblong, not narrowed at the summit. Hall & Harbour, 349. 

 Sierra Madre Range and Twin Lakes, Coulter. 



NABALTJS RACEMOSUS, Hook. Hall & Harbour, 351. " South Park ; 

 rare." Wet Mountain Valley, Brandegee. 



LYGODESMIA JUNCEA, Don. Hall & Harbour, 345. Plains near Den- 

 ver, Dr. fimith. Colorado Springs, Porter. Canon City, Brandegee; 

 RedMd. Plains of the Platte, Coulter. 



Var. ROSTRATA, Gr. En. Hall & Harbour, p. 69. Note. Achenia 

 attenuate-rostrate at the apex, 6" long; heads often 8-9 flowered; 

 leaves very narrowly linear, elongated, 3'-4'. Near Greeley, Greene. 



PYRRHOPAPPUS GRANDIFLORUS, Nutt. Scape simple, naked, much 

 longer than the deeply pinnatifid and ciliate radical leaves, bearing a 

 single head, 1 high, with a small bract in the middle; involucre 

 slightly canescent; ligules golden-yellow; pappus fulvous, with avillous 

 ring at base; aehenia produced into a long, slightly scabrous beak. 

 Plains of Eastern Colorado, Dr. Bell. 



CREPis 1 RUNCINATA, T. & G. Perennial, slightly hirsute, becoming 

 smoother; radical leaves obovate or oblong-lanceolate, runcinate-lobed 

 or only slightly toothed, tapering to the base, 2'-7' long ; scape l-2 

 high, branching, bearing a few linear, bract-like leaves ; branches and 

 involucres more or less hirsute with blackish, often glandular, hairs ; 

 involucres many-flowered, calyculate ; scales linear-lanceolate, with 

 scarious margins; achenia striate, slightly tapering upwards. Hall d' 

 Harbour, 348. South Park, Porter. Wet Mountain Valley, Brandegee. 

 Bear Creek and Sierra Madre Eange, Coulter. 



CREPIS OCCIDENT ALIS, T. & G. Perennial, canescent, with a close 

 furfuraceous pubescence ; stern 6 / -18 / high, branching, leafy ; radical 

 leaves, with the petiole, 6'-9' long, lanceolate, tapering both ways, 

 acuminate, more or less deeply runcinate-piimatifld, with acute, often 

 toothed lobes; cauline leaves similar, but smaller and sessile ; heads 

 eoryinbed, 11-35 flowered; involucres calyculate, with a few loose 

 bractlets, the proper scales 8-10, 6"-S" long ; mature achenia rather 

 stout, 3" long, tapering to the apex, evidently 10-striate. Hall & Har- 

 bour, 353. 



Var. GRACILIS, Eaton. (C. acuminata, var. gracilis, Torr. Ms.) Stem 

 evry slender, bearing 3-6 narrow, 9-14 flowered heads; leaves narrowly 

 linear, long-acuminate, with a few very narrow, almost filiform, elongated 

 teeth near the middle. Middle Park, Parry, 1864. 



CREPIS NANA, Bichards. Perennial, nearly acaulescent; scapes nu- 

 merous from the summit of the somewhat fusiform caudex, bearing 1 

 or more, about 14-flowered heads, scarcely equalling the elliptical, or 

 roundish, entire, or siuuate-lyrate, long petioled leaves; petioles pur- 

 plish; rays yellow; involucre few-flowered, cylindrical, exterior calycu- 

 late scales short and appressed ; receptacle naked ; achenia slender, 

 5-30 striate, narrowed at the apex, scarcely rostrate. Mount Lincoln, 

 at 12,500 feet altitude, Coulter. 



1 CREPIS, L. Heads several-m any-flowered; the flowers all ligulate. Involucre 

 usually calyculate with a few small bracteoles, the proper scales nearly equal, in a 

 single series. Receptacle naked or slightly hairy. Achenia terete or somewhat com- 

 pressed, 8-30 striate, usually narrower above or even tapering into a short beak, the 

 apex expanded into a minute disk. Pappus pure white, copious, of denticulate or 

 scabrous delicate capillary bristles, or sometimes of more rigid bristles slightly dilated 

 toward the base. 



