114 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



would then scarcely be classified among the cespitose willows. 

 Specimens with mature leaves much resemble S. chlorofhxlla; in fact 

 it differs scarcely from that species, except that in 6\ glaucous the 

 catkins are at the end of short leafy branches, while in S. chJorophxlla 

 they are naked from lateral buds. S. glaucops grows on mountain 

 sides, at an altitude of 2000-3000 m., while S. chJorophyUa grows 

 in cold bogs. 



Montana: Gallatin Co., 1886, Tzvcedv, 1184; East Boulder 

 Plateau, 1887, 2yoa and 2y4: Yogo Baldy, Little Belt Mts., 1896, 

 Flodman^ jSy ; McDonald's Peak, 1883, Caiiby, 2S4; Mt. Chauvet, 

 July 29, 1897, Rydhcrg cf- Bcsscx, 3^14. 



Yellowstone Park : Yellowstone Falls, Aug. 27, i'$>']i, Robert 

 Adams in the Ha3'den Surve}- (pistillate flowers only : the staminate 

 flowers belonging to another species) : 1884, Tzccedy, 34. 



Salix stricta (Anderson) Rydberg, Bull. X. Y. Bot. Gard. i: 



273 ; Salix dcsertoi-^im stricta Anders. ; DC. Prod. 16': 281 : S. 



desertorum Bebb ; Coulter, Man. R. M. 338. 



It is evident that Mr. Bebb did not exactly know the true S. dcser- 

 toniiii, as he states that Z^;'//?/^;;/^;;;^/, 6j/, represents the typical form. 

 Driunmond, 6jS, mounted on the same sheet in the Torrey Herba- 

 rium is quite different and matches Richardson's specimens exactl}'. 

 They are not at all yellowish silky as is the shrub found in the Rocky 

 Mountain Region of the United States. The leaves are only slightly 

 hairy, and in the dry specimens dark : the catkins are longer than in 

 our plant, and the bark is dark. In S. stricta the bark is often yel- 

 lowish or grayish. 



Montana: Cutbank Creek, 1883, Canhy, 2S6 and 2^4: Red 

 Mountain, 1888, Tzvccdy, jS. 



Yellowstone Park : Lower Geyser Basin, August 4, 1897, 

 Rydberg dr Bessey, jgij. 



* Salix Geyeriana And. 6fv. Vet. Akad. Forh.15: 122 [Bot. Cal. 



2:87]. 



Like S. crccta and S. Wolfii, but differing from both in the stipi- 

 tate capsule and obsolete style. The pubescence is more appressed 

 and more finely silky. 



Montana: Flathead River, 1883, Canby, 2gj. 



Salix Wolfii Bebb, Bot. Wheeler. Exp. 241 ; Salix desertorum Woljii 

 Bebb: Coulter, Man. R. ^vl. 338. 



