78 SYNOPSIS OF THE FLORA OF COLORADO. 



ARTEMISIA LUDOVICIANA, Nutt. Plains around Denver, Coulter. BK! 



Var. LATILOBA, Nntt. Lower leaves dilated, deeply pinnatiftd or tho 

 upper trifid, the lobes and the upper leaves broadly lanceolate, the upper 

 surface less toinentose or becoming' smooth. Near Denver, Dr. timith. 

 Glen Eyrie, Porter. 



Yar. GNAPHALODES, T. & G. Very tomentose-canescent throughout ; 

 leaves entire or sharply and irregularly serrate to wards the apex. Near 

 Denver, Dr'. Smith; B. H. Smith. 



Yar. MEXICANA, Gr. Lower leaves piunatifid, upper ones trifid; 

 lobes linear or linear-lanceolate, with revolute margins; heads small, 

 tomentose-canescent. Huerfano County, Greene. 



ARTEMISIA DISCOLOR, Pall. Suffruticose, erect or ascending, 1^-2 

 high, glabrous, simple below ; leaves l'-3' long, mostly smooth above, 

 paler and toinentose beneath, pinnatc4y-lobed with lanceolate, pointed, 

 entire or sparingly toothed segments, with revolute margins; heads sub- 

 globose, lJ"-2" broad, disposed in an elongated, virgate raceme, or 

 strict panicle; involucre at first toinentose, cup-shaped, the outer scales 

 ovate, inner ones oval, with hyaline, ci Hate-fringed margins; receptacle 

 smooth ; florets numerous, a few r of the outer ones pistillate, fertile, with 

 very slender corollas and smooth branches of the style, the rest perfect, 

 fertile, with funnel-form corollas and truncate, penicillate styles. Sierra 

 Madre Eange, Coulter. 



ARTEMISIA FRIGID A, Willd. Hall & Harbour, 304; Parry ; T)r. Smith ; 

 B. H. 8 with; Porter; Meehan; Brandegee; Coulter. 



ARTEMISIA ARCTIC A, Less. Herbaceous, tomeiitose-pubescent or nearly 

 glabrous; stems S'-15' high, simple, erect, leafy, terminating in a virgate 

 raceme or sparingly-branched panicle, somewhat angled; lower leaves 

 bipinnatih'd, on long petioles, lobes linear or linear-lanceolate, iucisely 

 toothed; heads large, globose, nodding, sessile or on short slender peti- 

 oles; scales of the involucre ovate, with blackish scarious margins. Hall 

 d'Htirbour, 298; Parry; Dr. Smith; Brandegee; Meehan; Coulter. Alpine. 



ARTEMISIA scopULORUM,Gr., Proc. Acad. Phil, March, 1863, p. 66. Note. 

 CiBSpitose; rhi/omti creeping; stems very simple, 3 / -8 / high ; leaves white- 

 silky, numerous, pinnately 3-5 cleft, segments especially of the radical 

 ones 3-parted, lobes as well as the uppermost leaves linear, narrow; 

 heads many or few, simply racemose-spicate, short-pedicelled, erect, 

 2 // -3 // broad ; involucre hemispherical, scales oval, villose on the back, 

 margin broad, scarious, dark-brown; wool of the receptacle copious, as 

 long as the florets; florets 18-30. Alpine. AVeston's Pass and White 

 House Mountain, Coulter. Summit of Pike's Peak, Canby. 



Yar. MONOCEPHALA, Gr. I c. Stem 2 / -6 / high, terminated by a solitary, 

 larger head; radical and lower leaves simply 3-parted or occasionally 

 5-parted; uppermost ones linear, very entire; flowers 30 or more, tipped 

 with purplish. Summit of Pike's Peak, Can-by. 



ARTEMISIA PARRYI, Gr. Proc. Am. Acad., vol. 7, p. 361. Yery smooth : 

 stem simple, a span or more high, from a perennial root, leafy; leaves 2-3 

 pinnately parted; pinnae 5-9, crowded, segments linear, acute, 3"-5" 

 long; panicle racemose, many-headed; heads nodding, nearly 3" in diam- 

 eter; scales of the involucre ovate, very obtuse, with scarious, dark- 

 browu uargiu.s; marginal flowers pistillate, few, the others fertile; 

 corollas very smooth. Sangre de Cristo Pass, Parry, 1867. 



GNAPHALIUM LUTEO-ALBUM, L., var. SPRENGELII, D. 0. Eaton, in 

 King's Rep., v. 5, p. 184. (G-. Sprengeln, H. & A.} Annual, whitened 

 with loose wool; stem 6'-30' high, simple below, corymbose with long 





