234 PRIMULACE^. (PKIMROSE 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, l or 2 inches high, nearly 

 glabrous : leaves subulate, minutely somewhat ciliate, 2 lines lon<r, somewhat 

 interruptedly imbricateclustered : pedicel 1 to 2-bracteolate near the calyx: 

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

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



4. AND ROSACE, Toum. 



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



* Perennials, proliferoaslij branched at base and cespitose : leaves ivsulate-imbri- 



cated at the base of the many-flov)ered scapes: capside usually feiv-seeded. 



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

 from lanceolate to oljlong-spatulate or ovate, carinate 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 rosidate circle of leaves, and 



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



-1- Calyx-tube obpyramidal in fruit, lohitish with conspicuous green teeth, ichich 



mostly sw'pass the capsule. 



2. A. OCeidentalis, 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 ]S'ew Mexico to the head-waters of the Missouri and eastward 

 to the Mississippi. 



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

 lanceolate, narrowed at base, from irregularly denticulate to laciniate-toothed : 

 scapes erect, 2 to \0 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-subidate, as long as the 

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

 City, Colorado, and San Bernardino, California. 



H- -f- Calyx-tube hemispherical in fruit ; the short teeth barely greenish and rather 

 shorter than the capsule. 



4. A. filiformis, Petz. 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 liue long : calyx-teeth broadly triangular, shorter than 

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



