368 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
(to purplish), scarious, nearly entire to proximally erose margins, canescent-puberu- 
lent or canescent-ciliate or nearly or quite glabrous; corolla 15 to 18 mm. long, the 
tube and throat 9 to 11 mm. long (the latter 3 to 4 mm. wide), the throat flattened, 
2-grooved anteriorly, the 2 posterior lobes 5 to 6 mm. long, united and arched one- 
third to one-half their length, with free projecting lobes, the 3 anterior lobes slightly 
longer, united at the base, the free lobes spreading; corolla externally glabrous (or 
in bud pubescent with loose nonglandular hairs), within slightly to moderately 
pubescent with yellowish hairs over the bases of anterior lobes, light blue-violet, 
more violet on throat, bluer on lobes, paler within and much paler on throat anteri- 
orly; anther sacs widely divaricate, 0.7 mm. long, broadly oval, distinct, opening 
throughout, glabrous; sterile filament shorter than the fertile ones, slightly wider 
distally, slightly bearded distally on the dorsal face with yellowish hairs; capsule 
6 mm. long, elliptic-ovate, acuminate, glabrous, pale brown; seeds 0.7 to 0.9 mm, 
long, irregularly quadrangular in outline, not curved, the angles rather blunt, not 
winged, the surface evidently alveolate-reticulate, glistening, gray, pale toward 
margin. 
Type in the herbarium of the New York Botanical Garden, collected on margin 
of a draw on mountain side, conglomerate, 1 to 2 miles south of Evanston, Uinta 
County, Wyoming, altitude about 2,100 to 2,200 meters, in flower, June 26, 1915, 
by F. W. Pennell (no. 5918). 
Apparently most closely allied to P. rydbergii, with which it may occasionally 
intergrade. Usually it may be distinguished readily from this not only by the 
characters given in the key, but also because it rarely blackens to the same degree. 
Sagebrush slopes, among willows, and openings in forest, at altitudes of 1,800 to 
2,900 meters; Montane and Submontane zones; flowering from late June to late August. 
Mountain slopes, through the Wasatch region from southern Lincoln County, Wyo- 
ming to Sevier County, Utah; through mountains eastward to Medicine Bow Range 
of southeastern Wyoming and Middle Park of northern Colorado; on the Uncom- 
pahgre Plateau and doubtless on intervening ridges. Extends northwestward into 
southern Idaho. 
Wyomine: Albany: Centennial, Nelson 8725, in part (F, U); Fox Park (R). Carbon: 
Hilton Ranch (near Colorado line), Osterhout 1703. Lincoln: La Barge, Ste: 
venson 164, in part (U). Uinta: Evanston, Pennell 5918 (A, D, F, H, K, M, 
R, U, Y); Medicine Butte, Pennell 5917 (Y). . 
Cotorapo: Grand: Sheephorn Divide, Shear & Bessey 4016 (Y); head of Willow 
Creek (M). Jackson: Rabbit Ears, Goodding 1567 (B, M, U, Y); foot of Mount 
Richtophen (on the Michigan) (U, Y); near Teller (F, Z). Larimer: Cameron 
Pass, Osterhout 56. Montrose: Uncompahgre Divide, Payson 559 (M). Routt: 
Columbine (U, Y); Steamboat Springs, Goodding 1606 (A, B, M, U, Y). 
Uran: Salt Lake: Barclay, Pennell 5954 (B, P, Y). San Pete: Big Horseshoe 
Summit (U); Ephraim Canyon, Tidestrom 313 (U). Sevier: Fish Lake, Mount 
Terrill, Tidestrom 1823 (U). Summit: Echo Canyon, Watson 763 (U). Utah: 
Soldier Summit, Pennell 6131 (D, H, M, R, 8, U, Y). Wasatch: Daniels Canyon, 
Garrett 2838 (Y). 
62. Penstemon pseudoprocerus Rydb. 
Penstemon pseudoprocerus Rydb. Mem. N. Y. Bot. Gard. 1: 346. 1900. ‘Montana: 
Bridger Mountains, June 12, 1897, Rydberg & Bessey, 4919 (type).’”” Type seen in 
herbarium of the New York Botanical Garden. 
Penstemon pseudohumilis Rydb. Mem. N. Y. Bot. Gard. 1: 347. 1900. ‘Idaho: 
Mt. Chauvet, July 29, 1897, Rydberg & Bessey 4915 (type).’’ Type seen in herbarium 
of the New York Botanical Garden. 
Penstemon owenii A. Nels. Bot. Gaz. 34: 32. 1902. ‘Collected again in 1899, 
August 16, by the writer, this time also on the Tetons [Wyoming] at an alpine sta- 
