SYNOPSIS OF THE FLORA OF COLORADO. 113 



membranous, entire, the lobes linear, shorter than the tube; tube of 

 the open corolla obconie, twice longer than the calyx, the erect broadly 

 obovate lobes very shortly acute; ovary lanceolate, stipitate.. Subal- 

 pine. Hall & Harbour, 470; Parry; Canby. Gray's Peak, Dr. Smith ; 

 B. H. Smith. Xorth Park, Haydeti. Twin Lakes, at 10,000 feet eleva- 

 tion, Coulter. 



FRASERA SPECIOSA, Dougl. Biennial, stein stout, erect, 3-5 high, 

 strict, usually simple, glabrous, not sulcate ; leaves in fours, thick, acut 

 ish or acute, 7-9 nerved, the lowest oblong-lanceolate, G'-9' long, 2' wide, 

 attenuate into a long petiole, the cauline connate at base, the uppermost 

 linear ; the racemose cyme densely-flowered, elongated ; flowers 1' in 

 diameter, the petals bearded at the base between the filaments ; calyx- 

 segments linear, acuminate, rather shorter than the whitish, punctate 

 petals ; glands in pairs, elliptic-oblong ; filaments dilated at base, 

 scarcely united ; style about equaling the ovary. Hall & Harbour, 553. 

 Monument Park, Coulter. Ute Pass, Porter. Abundant at lower and 

 middle elevations. 



SwERTiA 1 PERENNIS, L. DC. Prod., 9, p. 132. Steins erect, G'-20' high, 

 few-many-flowered ; lower leaves oblong-elliptic, long-petioled, cauline 

 ones opposite, ovate oblong, obtusish ; flowers erect, G"-3" in diameter, 

 steel-blue, with darker spots ; corolla-segments coriaceous, elliptic-oblong, 

 acutish, twice longer than the lanceolate calyx-lobes ; glands in pairs, 

 orbicular, the fimbriate crest distinct; stigma reniform, sulcate; seeds 

 winged. Hall i(- Harbour, 47G. Gray's Peak, Dr. Smith. Parry; Canby. 

 Twin Lakes, at 10,000 feet altitude, Coulter. 



PLEUROGYNE 2 ROTATA,Griseb. DC.Pw7.,9,p. 122. Amrual, simple, 

 erect, 3'-6' high, bearing 1-few flowers at the summit ; lowest leaves 

 spatulate, the uppermost linear, obtuse ; segments of the calyx lance- 

 linear, equaling the corolla ; ovary acute. " South Park, subalpine."' 

 Hall & Harbour, 477. 



APOCYNACE.E. 



APOCYNUM AZS-DROSJEMIFOLIUM, L. Plains of the Platte, near Den- 

 ver, Dr. Smith and Coulter. 



APOCYNUM CANNABINUM, L. Plains of the Platte, Coulter. Wet 

 Mountain Valley, Brandeyee. Median. 



ASCLEPIADACE-S:. 



ASCLEPIAS SPECIOSA, Torr. Ann. N. Y. Lye., 2, p. 218. Tomentose, 

 becoming glabrate ; stem simple, 2-5 high ; leaves '-S f long, cordate- 

 ovate, acute, short-petioled or the uppermost nearly sessile, abruptly 

 apiculate ; umbels axillary and terminal, solitary, many-flowered, the 

 short peduncles and the pedicels often densely toinentose ; flowers light 

 purple ; corolla-lobes ovate, acutish, reflexed ; hoods of the crown 6" 

 long, ovate, long-acuminate, bidentate at the base within, thrice longer 

 than the stigma and the compressed, incurved horn ; pods 4' long, 1' in 

 diameter. Plains near Denver, B. H. Smith. Colorado Springs, Porter. 

 Plains of the Platte, Coulter. 



1 SWERTIA, L. Flowers 5- (or sometimes 4-) uierous. Calyx-segments united at the 

 very base, valvate. Corolla withering, rotate, without corona or folds, glands fimbriate 

 on the margin. Stamens inserted on the throat ; filaments equal at base : anthers at 

 length incumbent, nodding. Stigma terminal, seated on the ovary, continuous, einar- 

 ginate-reiiifonn. Capsule 1-celled, '2-valved, septicidal. Seeds numerous, attached to 

 the valves. De CandoUe. 



2 PLEUROGYXE, Escholtz. As in Sicertia, except that the two lateral stigmas are 

 decurrent upon the margins of the valves and glaudulose above. 



SF C 



