(i6 4 ) 



when young. Leaves obovate, thick, acutish, minutely 

 glandular-denticulate, the upper surface slightly villous when 

 young, soon glabrate and shining, the lower surface densely 

 white-tomentose ; pistillate aments almost naked, from lateral 

 buds, 4-5 cm. long, 1 cm. thick; bracts obovate, obtuse, 

 about 3 mm. long, almost black, subsessile ; ovary about 5 

 mm. long, densely villous; style slender, over 2 mm. long, 

 the divisions fully 1 mm. long. 



Perhaps nearest related to S. Sitchensis, but readily dis- 

 tinguished from that species by the much larger ovary, the 

 long and slender style and stigmas and the broader and 

 darker bracts. Mouth of the Klondike, May 30, 1899 

 (Williams). 



Salix Alaxensis (Anders.) Coville. Lake Bennett (Tarle- 

 ton). Determined by Mr. F. V. Coville. 



Salix Saskatchezvana Seem. ? Dawson (Williams). 



Salix Richardsoni Hook. Lake Bennett (Tarleton). De- 

 termined by Mr. F. V. Coville. 



Salix Seemannii Rydb. sp. nov. 



A shrub, 3-4 m. high, the bark of the older branches dark 

 brown, that of the younger ones lighter, those of the season 

 villous-pubescent. Leaves oval to oblong-lanceolate, acute 

 at both ends, 3-7 cm. long, rather firm, entire ; upper surface 

 silky-villous when young, glabrate and bright green in age ; 

 lower surface permanently densely white or grayish silky- 

 villous ; aments on short lateral branches which bear 3-5 

 small leaves, the pistillate ones 4-7 cm. long, rather loose; 

 bracts oblong, obtuse, light brown, somewhat villous, about 

 2 mm. long; ovary in anthesis 3-4 mm. long, in fruit about 

 8 mm. long, densely white-villous, subsessile; style 0.5-1 

 mm. long; stigmas slender, about 1 mm. long, 2-cleft at the 

 apex; staminate aments 2-3 cm. long; stamens 2; filaments 

 slender, about 8 mm. long, free. 



Seemann's specimens, cited below, were named by Hooker 

 Salix glauca var. macrocarpa, but the plant is neither S. 

 macrocarpa of Trautvetter, nor that of Nuttall ; it is related 

 to the former, but not to the latter. S. macrocarpa Trautv. 

 (S. glauca macrocarpa Ledeb.) is described as having sessile 



