PENNELL—SCROPHULARIACEAE OF THE ROCKY MOUNTAINS. 349 
Rocky Mountain Herbarium. Here maintained as a puberulent to pubescent form, 
P. alpinus forma riparius (A. Nels.) Pennell (indicated in the following lists by an 
asterisk). 
Penstemon oreophilus Rydb. Bull. Torrey Club 31: 642. 1905. ‘Colorado: Eldora 
to Baltimore, 1903, Tweedy 5711 (type).’’ Type seen in herbarium of the New York 
Botanical Garden. 
Species variable in size, pubescence, width of leaves, shape and length of calyx 
lobes, pubescence on anther sacs, etc., and possibly to be considered a subspecies of 
the much more stable P. glaber. . 
Gravelly soil, at altitudes of 1,350 to 3,000 (3,600) meters; Submontane and Montane 
zones, ascending to Alpine; flowering from early June to late August. River banks 
in the high plains, slopes of foothills, and mountains, southeastern Wyoming to central 
Colorado. 
Wyomrne: Albany: Chug Creek, Nelson 7309 (M, U, Y); Dunn Ranch (Y); Lara- 
mie,* E. Nelson 3185 (R, Y); Laramie Peak* (U); Prayers Crossing* (U); Sibylee* 
(Y). Carbon: Fort Steele (R); Medicine Bow, Goodding 39 (M, U). Goshen: 
Fort Laramie, Nelson 9194 (R). 
CoLorapo: Boulder: Allenspark (B, R); Crescent (B); Eldora,* Robbins 2391 (B, R); 
Nederland* (B); Pine Clifi* (B); St. Vrain Creek* (B); Sugarloaf Mountain* 
(B); Ward,* Osterhout (Y). Clear Creek: Bard Creek (F); Deer Creek* (F); 
near Empire,* Patterson 256 (Y); near Georgetown* (F). Denver: Military Park 
(M); Valverde, Pennell 5825 (M, Y), 5842 (F, H, R, §, Y). El Paso: Bald Moun- 
tain (Y); Cheyenne Mountain (Y); Colorado Springs,* Jones 973 (F); Crystal 
Park (M, U, Z); Green Mountain Falls (U, Z); Manitou (Y); North Cheyenne 
Canyon, (Y); Pikes Peak (Pennell 6338, near Mountain View), Pennell 6320 
(D, K, Y), 6321 (P, Y); Quartz Ridge (Y); South Cheyenne Canyon (Y); Ute 
Pass (M). Fremont: Brandegee (M). Gilpin: Central City* (Y); Eldora to Bal- 
timore (Y); Mammoth Gulch (B); Tolland, Pennell 6374 (Y),* 6374A (Y), 6376 Y). 
Jefferson: Bergen Park (M); Buffalo Creek Canyon, Rusby (Y); Golden, Jones 824 
(B, Y); Morrison (A). Larimer: Estes Park*, Horsetooth Mountain,* Cowen 
1807 (Y), 4201; Moraine Park*; Stove Prairie Hill* (Y). Saguache: Marshall 
Pass, Baker 869 (Y). Teller: Rosemont, Blumer (F). Weld: Evans, John- 
ston 641 (Y). 
29. Penstemon brandegei Porter. 
Penstemon cyananthus brandegei Porter; Port. & Coult. Syn. Fl. Colo. 91. 1874. 
“Sierra Mojado, Brandegee.’’ Isotype seen in herbarium oi the Missouri Botanical 
Garden. This differs from other specimens here associated with it in having the 
corolla more lanate within, and in having the sterile filament, at least in some flowers, 
bearded with a very few hairs. The name is here used for what is believed to be 
a definite species, although some specimens, including the type, appear to approach 
P. alpinus. 
Penstemon brandegei Porter; Rydb. Mem. N. Y. Bot. Gard. 1: 343. 1900. As to 
synonomy; description compounded of this and P. cyaneus. 
Probably in environments similar to those preferred by P. alpinus, at altitudes of 
1,800 to 2,400 meters; Submontane Zone; flowering from late June to late July. 
Probably foothills and lower mountain slopes, perhaps descending to high plains, 
southeastern Colorado and northeastern New Mexico, on the Atlantic slope. 
Cororavo: Fremont: Canyon City, Brandegee 930 (M). Las Animas: Fisher Peak 
(Y); Trinidad, Beckwith 160 (Y), 162 (Y); Wootton (Y). 
30. Penstenom saxosorum Pennell, sp. nov. 
Stems several, 10 to 80 cm. tall, from a short branched caudex, slender, glabrous, 
not or scarcely glaucous; leaves green, not or scarcely glaucous, glabrous, those at 
the base of the stem with lanceolate, obscurely acute blades 5 to 7 cm. long, narrowed 
