RvDBERG : 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. glabcr and P. alpi/ius, differing 

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

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

 very scarious erose margins. P. alpinits Torr. ( = P. riparius A 

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

 at an altitude of 1800-3600 m. 



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

 and 5710; Halfway House, 1896, Shear 47S1 ; Manitou, 1896, 

 Clements lyi ; Larimer County, 1893, Craiidali ; Quartz Ridge, 

 Pike's Peak, Clements iij ■' South Cheyenne Canon, 1895, E. A. 

 Besscy ; mountains near Empire, 1892, Patterson 2j6. 



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 mm. long, more or less open funnelform from a narrow 

 tube, little oblique and scarcel)' gibbous ; anthers glabrous ; sterile 

 stamen spatulate at the apex and with a yellow beard. 



This is closely related to the northern P. acuminatus 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 143S ; North Park, 1896, 

 Osterhont ^g ; also 1891, Crai/dall r^jg. 



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 



