Re ee re ee ee ae 
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. glader are orbicular or short ovate and with 
very scarious erose margins. P. alpinus Torr. (= P. riparius A 
Nels.), is more or less puberulent throughout. P. oreophilus grows 
at an altitude of 1800-3600 m. 
Cororapo: Eldora to Baltimore, 1903, Ziveedy 5777 (type) 
and 57z0; Halfway House, 1896, Shear 4781; Manitou, 1896, 
Clements 171; Larimer County, 1893, Crandall, Quartz Ridge, 
Pike’s Peak, Clements 113; South Cheyenne Cafion, 1895, £. A. 
Bessey ; mountains near Empire, 1892, Patterson 256. 
~ Pentstemon cyathophorus sp. nov. 
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 scarcely 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. 
CoLorapo: Pearl, 1901, Zzeedy 4307 (type) ; Grizzly Creek, 
1896, Baker; also 1894, Crandall 1438; North Park, 1896, 
Osterhout 59; also 1891, Crandall 1439. 
v 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 
