6 SYNOPSIS OF THE FLORA OF COLORADO. 



PAPAVERACE.E. 



PAP AVER ALPINUM, L. Scape one-flowered, 2 / -3 / high, naked, hispid 

 as well as the calyx with brownish hairs ; leaves lance-ovate in outline, 

 deeply pinnatifid, divisions rarely incised ; flower nodding in the bud, 

 6"-8" in diameter; petals lemon-yellow ; capsule obovate, hispid. Near- 

 est VSLT. flaviflorum, Koch. Fl. Germ. 1, p. 25. Alpine. Hall; Parry, 

 147 ; Meehan. California Gulch at 12,500 feet altitude, Coulter. 



ARGEMONE MEXIOANA, L. Most common on the plains along the 

 fout-hills. Stout, 2-3 high; flowers large, 2 / -3 / in' diameter, white, 

 very rarely yellow. Hall; Dr. Smith; B. H. Smith; Porter; Coulter. 



FUMARIACE^. 



CORYDALIS AUREA, L., var. CURVISILIQUA, Eng. Gommou in the 

 mountains. Dr. Smith; B. H. Smith; Canby; Porter; Coulter. 



CRUCIFER^E. 



NASTURTIUM OFFICINALE, E. Br, Platte Eiver near Denver, Dr. 

 Smith. Golden City, Greene. 



NASTURTIUM SINUATUM, Nutt. Platte Eiver near Denver, Dr. 

 Smith. 



NASTURTIUM OBTUSUM, Nutt. Hall & Harbour, 32; Porter. Oro 

 City, Coulter. 



JNASTURTIUM PALUSTRE, D. C. Dr. Smith; Porter; Brandegee. Near 

 Denver, Coulter ; Red field. 



ARIBIS HIRSUTA, Scop. Common everywhere in Colorado. Dr. 

 Smith; Meehan; Brandegee; Coulter; Red field. 



ARABIS DRUMMONDII, Gr. Very variable; stem strict or slender and 

 flexuous; glabrous or covered with a stellate pubescence; pods erect 

 and straight or spreading and arcuate. Dr. Smith; Coulter. 



Yar. ALPINA, Watson. A reduced alpine or subalpine form with a 

 few crowded purple or white flowers; glabrous or stellately pubescent. 

 White House Mountain, August, at 11,000 feet altitude, Coulter. 



ARABIS RETROFRACTA, Grab. (Streptanthus angustifoUus, Nutt.) 

 Stems several from one root, 12 / -18 / high, virgate, branching near the 

 summit; radical leaves lanceolate, linear, sparingly hirsute, lower can- 

 line much broader, closely amplexicaul, upper ones smaller, oblong- 

 lanceolate, smooth, erect; flowers small, pale red; petals oblong-oval, 

 the limb exserted ; sepals short, smooth, almost coriaceous. Hall & Har- 

 bour, 35. 



CARDAMINE CORDIFOLIA, Gr. PL FendL, p. 8. Stem l-3 high, 

 erect, simple, from a fibrous, creeping rhizoma, glabrous or pilose at 

 base, leafy to the top; leaves all petioled, cordate, sparingly repand-den- 

 tate or angular-toothed, ciliate, 2 / -4 / in diameter ; lowest orbicular ; 

 the upper triangular-cordate, sub-acuminate ; flowers rather large, 

 white; siliques erect, 2 to 3 times longer than the pedicels. Common in 

 swamps at middle elevations. Hall & Harbour, 34; Dr. Smith; Parry ; 

 Median; Coulter. Sangre de Cristo Eauge, Red field. 



CARDAMINE HIRSUTA, L. Hall & Harbour, 33. 



YESICARIA STENOPHYLLA, Gr. PL Lindh., 2, p. 149. Low, branches 

 several, spreading form a thick, woody caudex, a span or less high ; leaves 

 linear or linear spatulate, crowded; silvery pubescent, mostly entire. 



