378 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
1806, along Collins Creek, a branch of the Kooskooskee; now Nahwah River, or Lolo 
Fork of Clearwater River, in Clearwater County, Idaho. Isotype seen in herbarium 
of Academy of Natural Sciences of Philadelphia. The type shows leaves relatively 
strongly serrate, a variable character, but it has broadly lanceolate sepals, thus 
differing from P. scouleri Hook. 
Dasanthera fruticosa Raf. Amer. Month. Mag. 267. 1818. Type of genus Dasanthera 
Raf. 
Penstemon crassifolius Lindl. Bot. Reg. 24: pl. 16. 1838. “A native of the North 
West coast of North America, whence seeds were sent by the late Mr. Douglas to the 
Horticultural Society of London in whose garden it was figured in June last.”” This 
represents the state of the species with leaves most nearly entire. 
Penstemon fruticosus Greene, Pittonia 2: 239. 1892. 
Penstemon menziesii crassifolius Schelle in Beissner, Schelle & Zaber, Handb. 
Laubh. Benen. 432. 1903. 
Penstemon fruticosus crassifolius Krautter, Contr. Bot. Lab. Univ. Pa. 3: 100. 1908. 
Rocky woodland, mountain slopes, at altitudes of 2,000 to 2,300 meters ; Montane 
Zone; flowering from early July to early August. Bighorn Mountains and Yellow- 
stone National Park, Wyoming, westward. Western Montana and northern Wyoming 
to eastern Washington and eastern Oregon. 
Wyromina: Park: Grinnell Creek, Cary 569 (U). Yellowstone National Park: 
Crevasse Mountain; Golden Gate, Pennell 6030 (F, H, Y); along Madison River, 
Pennell 5990 (Y); Mammoth Hot Springs (M, U, Y); Slough Creek (U); Spring 
Creek (R); Upper Geyser Basin, Pennell 6001 (R, U, Y). 
Ipano: Fremont: Henrys Lake and Mount Chauvet, Rydberg & Bessey 4907 (F, U, Y). 
83. Penstemon bridgesii A. Gray. 
Penstemon bridgesii A. Gray, Proc. Amer. Acad. 7: 379. 1868. “No. 218 in Cali- 
fornian collection of the late Thomas Bridges.’’ Isotype seen in herbarium of the 
New York Botanical Garden. 
Rocky cliffs, canyons, mountain slopes, at altitudes of 1,800 to 2,600 meters ; Sub- 
montane and Montane zones; flowering from mid-June to late August. Low moun- 
tains, Sierra el Late, Montezuma County, Colorado and Abajo Mountains, San Juan 
County, Utah, westward across southern Utah. Extending to northern Arizona and 
central and southern California. 
CoLorapo: Montezuma: Sierra el Late, Brandegee 1293 (M). 
Uran: Piute: Marysvale, Rydberg & Carlton 7123 (U, Y). San Juan: Sierra Abajo 
(U, Y); Western Bears Ear, Elk Mountains, Rydberg & Garrett 9373 (U, Y), 
9374 (Y). Sevier: Clear Creek Canyon, Garrett 2517 (M, Y); canyon south of 
Glenwood (U). Wayne: Jukes Butte, Henry Mountains, Jones 5664 (M, U, Y). 
84. Penstemon platyphyllus Rydb. 
Penstemon heterophyllus latifolius S. Wats. in King, Geol. Expl. 40th Par. 5: 222. 
1871. ‘‘Wahsatch Mountains; 5-8,000 feet altitude. [S. Watson] (787).’’ Isotype, 
collected in Cottonwood Canyon, Utah, July, 1869, seen in herbarium of Columbia 
University at the New York Botanical Garden. 
Penstemon latifolius Krautter, Contr. Bot. Lab. Univ. Pa. 3: 194. 1908. Not P. 
latifolius Hoffmg. 1824. 
Penstemon platyphyllus Rydb. Bull. Torrey Club 36: 690. 1909. “Utah: Cotton- 
wood Cafion, July, 1869, S. Watson 787.” Type is isotype of P. heterophyllus lati- 
Solius S. Wats. 
Rocky mountain slopes and canyons, at altitudes of 1,300 to 2,400 meters; Sub- 
alpine Zone, descending on canyon sides into Upper Sonoran Zone; flowering from 
