866 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Eastern slope of Bighorn Mountains, Tweedy 3415 (Y). Lincoln: Cokeville? 
(R); La Barge (U); Mount Leidy (Y); Upper Hoback Basin, C. C. Curtis (Y). 
Sheridan: Big Horn, Tweedy 2329 (Y). Sweetwater: Bush Ranch, Nelson 7107, 
in part (Y). Uinta: Evanston, 7. A. Williams (U). Yellowstone National Park: 
Devils Cut (U); along Madison River, Pennell 5991 (Y); near Mammoth Hot 
Springs (A, M); Middle Gardiner Falls (F); Swan Lake, Pennell 6036a (Y); 
Wraith Falls (M, U). 
Ipano: Fremont: Canyon Creek, Merrill & Wilcox 881, in part (U, Y). 
Cororapo: Boulder: Caribou, Penard 526 (Y). Chaffee: Mount Harvard, Clements 
(Y). Clear Creek: Bard Creek Valley,! Patterson 255 (F, M, P, Y); Graymont;! 
Mount Lincoln! (U). Gilpin: Central City, Scovell (E). Jackson: Big Creek 
Park; near Pinkhampton (Y, Z); Walden,' Goodding 1502, in part (A, B, M, 
P, U, Y). Lake: Leadville (A, M, U); Mount Massive (F); Tennessee Pass, 
D. A. Saunders (Y); Twin Lakes (F, U). Larimer: Cameron Pass; Chambers 
Lake, Crandall (Y). Park: Between Como and Boreas,! Cowen 389 (M, U); 
South Park, Wolf (F, U). Summit: Breckenridge,! Mackenzie 145 (A, M); 
Farnham (M). 
Ura: Salt Lake: Altus (F); Clayton Peak (M, U); Gogorza, Pennell 5964 (F, H, 
R, U, Y); Silver Lake, Pennell 6083 (M, Y), 6105 (D, P, 8S, Y). Summit: Par- 
ley Park, Watson 783 (Y). 
59a. Penstemon procerus aberrans (Jones) A. Nels. 
Penstemon confertus aberrans Jones, Proc. Calif. Acad. II. 5: 715. 1895. “[M. EB. 
Jones] no. 56011. July 6, 1894, Soldier Summit, Utah, 7,300° alt., in gravel.” Type 
seen in U. 8. National Herbarium. 
Penstemon procerus aberrans A. Nels. Bot. Gaz. 54: 146. 1912. 
Gravelly soil, low sagebrush and meadows, at altitudes of 2,100 to 2,700 meters; 
Submontane and Montane zones; flowering from early July to early August. Wasatch 
Mountains of central Utah. 
Uraag: Garfield: Aquarius Plateau, at head of Poison Creek, Rydberg & Carlton 
7377 (Y), 7436 (Y). Sevier: Fish Lake, Jones 5740 (F, M, U), Rydberg & Carl- 
ton 7511 (U, Y), Ward 342 (F, M,U). Utah: Soldier Summit, Jones 5601i, in 
part (U), Pennell 6130 (F, H, M, R, Y). 
59b. Penstemon procerus pulvereus Pennell, subsp. nov. 
Sepals lanceolate-attenuate, more or less caudate, with relatively conspicuous 
scarious margins, more or less densely canescent-puberulent; corolla densely lanose 
within. Otherwise as in the species, with which it frequently grows and evidently 
intermingles. 
Type in the herbarium of the New York Botanical Garden, collected on moist 
meadow knolls, north of Swan Lake, Yellowstone National Park, Wyoming, in flower, 
July 7, 1915, by F. W. Pennell (no. 6036). 
Grassy soil, meadows; at altitudes of 1,900 to 2,700 meters; Montane and Sub- 
montane zones; flowering from mid-June to mid-August. Mountains, southwestern 
Montana, western Wyoming, and southeastern Idaho. 
Wyomine: Fremont: Union Pass, Nelson 833 (F, M, U). Lincoln: Buffalo Fork, 
Tweedy 228 (Y); head of Clarks Fork (U); Gros Ventre River (U). Sweetwater: 
Bush Ranch, Nelson 7107, in part (M, U). Yellowstone National Park: Devils 
Cut (U); Gardiner River (Y); Mammoth Hot Springs (M, U); near Swan Lake, 
Pennell 6036 (F, H, K, M, P, R, U, Y); Wraith Falls (M, Y); mouth of Yellow- 
stone Lake, Pennell 6013 (A, D, R, S, Y). 
Approaching P. rydbergii. 
