342 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Rance: Alaska to Labrador, southward to California, New Jersey, and New Mexico. 
Europe. Asia. 
SPECIMENS EXAMINED: Cascade Mountains to Colville, Lyall in 1860; without locality, 
Vasey 316; Mission, Kreager 490; Wenache Mountains, Cotton 1651}. 
ZONAL DISTRIBUTION: Canadian ? 
la. Dasiphora fruticosa tenuifolia (Willd.) Rydberg, Mon. N. A. Pot. 190. 1898. 
Potentilla tenuifolia Willd.; Schlecht. Mag. Ges. Naturf. Freunde Berlin 7: 285. 1813. 
Potentilla fruticosa tenuifolia Lehm. Monog. Pot. 20 1820. 
Type Locauity: “ Aus Sibirien.” 
Rance: Same as of the preceding. 
SPECIMENS EXAMINED: Olympic Mountains, Grant in 1889; Mount Rainier, Piper 1997; 
Wenache Mountains, Elmer 462; Horseshoe Basin, Lake & Hull 519. 
ZONAL DISTRIBUTION: Hudsonian. 
DRYMOCALLIS. 
Style filiform, more than twice as long as the akenes ._...-.-------- 1. D. rhomboidea. 
Style filiform, less than twice as long as the akenes. 
Flowers cream-color. 
Stems 20 to 50cm. high; alpine plant................... 2. D. pseudorupestris. 
Stems 30 to 100 em. high; lowland plant... ........----- 3. D. convallaria. 
Flowers yellow. 
Sepals broadly ovate ...........-.-------------------- 7. D. wrangeliana. 
Sepals lanceolate to ovate. 
Herbage nearly glabrous. _...........2---.--.------ 6. D. glabrata. 
Herbage very glandular. 
Petals much larger than the sepals.........-.-.- 4. D. valida. 
Petals scarcely larger than the sepals............ 5. D. glandulosa. 
1. Drymocallis rhomboidea Rydberg, Mon. N. A. Pot. 203. 1898. 
Potentilla rhomboidea Rydberg, Bull. Torr. Club 28: 248. 1896. 
Type Locauity: Nevada. Collected by Watson. 
Rance: Washington to Montana, Nevada, and Oregon. 
SPECIMENS EXAMINED: Mount Adams, Suksdorf 119; Flett 1332. 
2. Drymocallis pseudorupestris Rydberg, Mon. N. A. Pot. 194. 1898. 
Potentilla pseudorupesiris Rydberg, Bull. Torr. Club 24: 250, 1897. 
Potentilla glandulosa nevadensis 8. Wats. in Brewer & Wats. Bot. Cal. 1: 178. 1876, not 
P. nevadensis Boiss. 
Tyrr Locauity: Little Belt Mountains, Montana. 
Rance; Alberta to Washington and California. 
SPECIMENS EXAMINED: Klickitat County, Suksdorf in 1885, 
This supposed species seems to me quite identical with the Old World Potentilla rupestris L. 
3. Drymocallis convallaria Rydberg, Mon. N. A. Pot. 198. 1898. 
Potentilla convallaria Rydberg, Bull. Torr. Club 24: 249. 1897. 
Type LocaLity: Bozeman, Montana. 
Rance: Washington to Wyoming and Assiniboia. 
SPECIMENS EXAMINED: Conconully, Whited 1312; Rattlesnake Mountains, Cofion 470; 
Loomis, Elmer 565; Pullman, Piper 1528; Elmer 820. 
ZONAL DIsTRIBUTION: Arid transition. 
This species is very closely allied to the eastern D. arguia, to which it has often beer 
referred. 
4. Drymocallis valida (Greene). 
Potentilla valida Greene, Pittonia 3: 20. 1896. 
