1915] BALL—WILLOWS 49 
SALIX SESSILIFOLIA Nuttall, N.A. Sylva 1:68. 1842; Bebb (in 
part), Willows of California 85. 1879; not of most authors (fig. 2). 
Fic. 2.—Salix sessilifolia Nutt.: a portion of the pistillate twig of Hall 474 in 
Gray Hert,; ; Nat. size, 
ag sessilifolia var. villosa Andersson, Monog. Sal. 56. 1867; Anders. in 
DC. Prod. 167:214. 1868 
