Rydberg : Rocky Mountain flora 643 



more or less bearded within ; anthers hispidulous on the margin 

 and more or less short-hairy on the back and sides ; sterile stamen 

 with yellow beard at the end. 



This is closely related to P. glaber and P. alpinus, differing 

 from the former in the lower habit and the shape of the calyx- 

 lobes, which in P. glaber are orbicular or short ovate and with 

 very scarious erose margins. P. alpinus Torr. ( = P. riparins A 

 Nels.), is more or less puberulent throughout. P. oreophilus grows 

 at an altitude of 1800-3600 m. 



Colorado: Eldora to Baltimore, 1903, Tweedy 57 11 (type) 

 and 5710; Halfway House, 1896, Shear 4781 ; Manitou, 1896, 

 Clements 171 ; Larimer County, 1893, Crandall ; Quartz Ridge, 

 Pike's Peak, Clements 113 : South Cheyenne Canon, 1895, E. A. 

 Bcsscy ; mountains near Empire, 1892, Patterson 236. 



Pentstemon cyathophorus sp. no v. 



Perennial and more or less cespitose at the base, glabrous 

 throughout or the basal leaves minutely puberulent ; stem very 

 strict, 3-4 dm. high ; basal leaves spatulate, petioled, 3-6 cm. 

 long; lower stem-leaves also spatulate ; the others ovate or orbic- 

 ular, often abrubtly acuminate or mucronate ; bracts round, ovate 

 or orbicular, abruptly short-acuminate, the upper usually scarious- 

 margined and erose, reniform and the pairs together resembling a 

 cup ; calyx 6-8 mm. long ; lobes lanceolate, scarious-margined 

 and more or less erose-dentate ; corolla pink-purple, a little over 

 12-15 nam. long, more or less open funnelform from a narrow 

 tube, little oblique and scarcely gibbous ; anthers glabrous ; sterile 

 stamen spatulate at the apex and with a yellow beard. 



This is closely related to the northern P. acumiiiatus and has 

 been mistaken for it, but differs in the scarious-margined and toothed 

 calyx-lobes and upper bracts. It grows in mountain meadows at 

 an altitude of 2500-3000 m. 



Colorado : Pearl, 1901, Tweedy 4307 (type) ; Grizzly Creek, 

 1896, Baker; also 1894, Crandall 1438 ; North Park, 1896, 

 Ostcrhont 39 ; also 1891, Crandall 143c). 



Castilleja brunnescens sp. nov. 



Perennial with a short cespitose caudex ; stems 3-5 dm. high, 

 more or less pubescent and purplish ; leaves narrowly linear- 

 lanceolate, more or less distinctly 3 -nerved, 4-5 cm. long, finely 

 pubescent ; bracts ovate to oblong-lanceolate, obtuse or rounded 



