234 PRIMULACE.E. (PRIMROSE FAMILY.) 



3. DOUGLASIA, Lindl. 



Depressed and tufted herbs : the stems branching, persistent : the leaves 

 small, linear, imbricated or rosulate on the branches, or some of them scat- 

 tered and alternate. In ours the flowers are solitary, terminating the leafy- 

 shoots, and the tube of the corolla barely equals the calyx. 



1. D. montana, Gray. Pulvinate-cespitose, 1 or 2 inches high, nearly 

 glabrous : leaves subulate, minutely somewhat ciliate, 2 lines long, somewhat 

 interruptedly imbricate-clustered : pedicel 1 to 2-bracteolate near the calyx : 

 corolla-lobes cuueate-obovate, 2 lines long. Proc. Am. Acad. vii. 371. Moun- 

 tains about Helena, Montana, and Owl Creek Mountains, Wyoming. 



4. ANDROSACE, Tourn. 

 Small annuals or perennials of various habit : flowers umbellate, white. 



# Perennials, proliferous] 'y branched at base and cespitose : leaves rosulate-imbri- 



cated at the base of the many-flowered scapes: capsule usually few-seeded. 



1. A. Chamsejasme, Host. Leaves in more or less open rosulate tufts, 

 from lanceolate to oblong-spatulate or ovate, cariuate 1 -nerved, their margins 

 (at least), the scape (1 to 3 inches high) and the somewhat capitate umbel 

 villous with many-jointed hairs : corolla white with yellowish eye. Alpine 

 from Colorado and northward to the Arctic coast. 



* * Annuals, acaulescent, with slender root, an open rosulate circle of leaves, and 



naked scapes, bearing an involucrate umbel : capsule many-seeded. 



- Calyx-tube obpyramidal in fruit, ivhitish with conspicuous green teeth, which 



mostly surpass the capsule. 



2. A. OCCidentaliS, Pursh. Minutely pubescent, not over 3 inches high: 

 radical leaves and those of the conspicuous involucre oblong-ovate or spatulate, 

 entire, sessile : scapes diffuse : bracts of the involucre ovate or oblong : lobes of 

 the calyx as long as the tube : lobes of the corolla oblong, shorter than the 

 calyx. From New Mexico to the head-waters of the Missouri and eastward 

 to the Mississippi. 



3. A. septentrionalis, L. Almost glabrous : leaves lanceolate or oblong- 

 lanceolate, narroiced at base, from irregidarly denticulate to laciniate-toothcd : 

 scapes erect, 2 to 10 inches high : bracts of the small involucre subulate : lobes of 

 the calyx mostly shorter than the tube : lobes of the corolla obovate, rather 

 longer than the calyx. High alpine to much lower, from New Mexico and 

 Nevada to the Arctic coast. 



Var. subulifera, Gray. Lobes of the calyx slender-subulate, as long as the 

 tube, surpassing the corolla. Synopt. Fl. ii. 60. Mountains near Boulder 

 City, Colorado, and San Bernardino, California. 



4_ H_ Calyx-tube hemispherical in fruit ; the short teeth barely greenish and rather 

 shorter than the capsule. 



4. A. filiformis, TCetz. Glabrous : leaves and scapes (1 to 4 inches high) 

 nearly as in the preceding or more capillary : flowers less than a line and 

 globose capsule only a line long : calyx-teeth broadly triangular, shorter than 

 the very small corolla Mountains from Colorado and Utah to Wyoming. 



