ALUM, 
Stem 1°-g° ie elerny eee deciduously 
-5-lobed, t coat lobes sli: 
84 SYNOPSIS OF THE FLORA OF COLORADO. 
TETRADYMIA! CANESCENS, DO., var. INERMIS, Gr. (7. inermis, Nutt. 
Shrubby, much branched, 10-2 high, silv very- eae nt, unarmed; 
eaves thickish, short, 6//- 9” Jon ng, eh a? ade nsely tomentose, acute 
but scsipiety mucronate ; axillary fascicles of smaller leaves none ; heads 
corymbose-clustered ; involueral scales 2-4 long, four, oblong, obtuse, 
carinate; florets 4; achenia a villous with short, soft hairs, soon 
becoming nearly smooth.— h Park, Hayden. Upper Arkansas, Por- 
rkansas River, Coster 
i heBkbie MIA GLABRATA, T. & G. Pacif. R. R. Rep., 2, p. 122, t. 5 
Shrubby, aliv aricately br. anched, unar hed. young iatoitets and ftinge 
loosely clothed with white floccose wool whichis soon deciduous ; lea 
from their axils shorter, obtuse, ‘ericoid 1 ves; heads corymbose 
scales : the involucre 4, ’ white- pubescent or gla abrate, about 4” long; 
florets achenia villous, he hairs much shorter than the pappus. 
—Wet Mio anole Valley, Brandegee. 
CIRSIUM UNDULATUM, Spreng. | tie Denver, Dr. =_— Along the 
Platte, and also a form with yellowish flowers, Couite 
CIRSIUM ee eee Mx.— Wet Mountain Valley Brandegee. 
Along the Platte, Cou 
CIRSIUM FOLIOSU} he. (C. edule, rath. Stem ateet; stout, ne 
somewhat woolly, na Behe toward the top; leaves Loos ely webby on 
both davtabon, elongated, 6’-11’ long, “an over 1’ wide, irregularly sinu- 
_ate-toothed, teeth tr ‘iangular, and the veins wading in hone stramineous 
spines ; heads large, glomerate in the axils of the uppermost leaves, oF 
peduncled ; : involucral scales linear-lanceolate, appressed, spine-tipped, 
arachnoid. tomentose.—Near Denver, Dr. Smith. Hall & dag bowry 330 
and 341. Weston’s Pass and Sierra Madre Range, Coulter. <2 
_ Cirstum Drummonno, T. & Pi Stemless or — aes stems, 40-29 
high, sparsely hairy ; leaves green and smoot e, paler and slightly 
webby beneath, radical ones sblancebtsts or tebe Et primary oues 
entire, with cilvate. spinulose margins, later ones and the ee gen 
pinnately toothed or incised, often doubly so, and spiny wi 
slender prickles ; heads 1-4, sessile or short-stalked, pe oe cither 
‘by the radical leaves or bya rele of leaves at the top of the stem; 
involacres glabrous, or with che seales softly ciliate on the margins; 
scales triangular-lanceolate, a presse essed, tipped with weak prickles; 
flowers red or pur urplish. Einoagher 
(a.) Caulescent form. Hall & Hariour, 343. (0.) decgnlesoent form. 
Hall & went es Sierra Madre oulter 
Cirsium Gr. Proe ere Phil., ‘Marek, dink . 69. 
arachnoid-tom entose 5 leaves 
nearly smooth above, paler a ebby beneath, far decurrent, linear or 
_ oblong-linear, Leoomiegy with 3 very numerous, crowded, short, very spiny 
bes ;. 
eads — i, Ao ina — termi cluster, involucrate 
“with very spiny f ahr po which pass ert ally into spinulose- 
ciliate, sine tia "ineslae sl Soecdes, which are clothed with a finely 
'TerrapyMia, DC. wered, (in one species 5-9-flo wored ot 28 the flowers all — 
tubular, | + and Abicy es the« Lorotian funnel-form with a lon, tube, deeply 
recurved. al pot of 4( 58) 5 eed con- 
cave-carinate, Ti b! bg" ‘naked. Anthers lineat, 
Branches of thentyleline linear, with very shor ovate, bescent 
cate on, en ot ma a ere ag 
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