338 SALICACEAE 



Capsule more or less pubescent; leaves more or less white-silky, entire 



Var. argyrophylla. 



Stamens 2 (rarely 1), their filaments glabrous; stigmas entire or notched, rarely parted into 

 linear lobes; scales usually black or dark-colored, mostly jjersistent. 

 Capsules glabrous. 



Leaves dark green above, white-pubescent beneath; catkins sessile, leafless; filaments 



more or less united ; small tree or shrub ; foothills mainly, common . 6. S. lasiolepis. 



Leaves light green, nearly alike on both faces ; catkins shortly peduncled and leafy 



bracteate; filaments distinct or partly united: montane, rare with us 



7. S. cordata. 



Capsules tomentose, silky or pubcrulent. 

 Style none. 



Leaves obovate; catkin-scales black, with white hairs 8. S. flavescens. 



Leaves lanceolate ; catkin-scales tawny 9. S. macrocarpa. 



Style evident. 



Stamen 1, or if 2 the filaments partly united; stigm.as linear; leaves conspicu- 

 ously silky beneath 10. S. sitchensis. 



Stamens 2; stigmas short. 



Montane species; good sized shrubs; leaves entire or nearly so. 



Leaves glabrate beneath; catkins appearing witlf' the leaves, borne on short leafy 



peduncles ; Sierra Nevada 11. S. lemmoni. 



Leaves glaucous-pubescent beneath, long and narrow; catkins appearing before the 



leaves, sessile ; inner South Coast Bange 12. S. hretveri. 



Alpine species; low shrubs or dwarfs. 



Capsule shortly pediceled, at least pistillate catkins on short leafy liranchlets. 

 Ovary hoary or finely tomentulose. 



Leaves entire, usually green and glabrate 13. S. glauca. 



Leaves serrulate, usually gray-villous, the liract-likc leaves glandular- 

 serrulate 14. S. culifornica. 



Ovary glabrous ; leaves bright green, dark veined 1.5. S. harclayi. 



Capsule sessile, 2 lines long; catkins short, sessile or subsessile 16. S. monica. 



Capsule subsessile, 2 to 3 lines long; catkins terminal on short leafy branches; plant 

 body forming a more or less dense mat 17. S. tenera. 



1. S. lasiandra Henth. Yellow AA'illow. Tree 20 to 45 feet high, the trunk 

 with brown roughly fissured bark; one-winter-old brauehlets yellowish; winter 

 buds keeled on the back, short and blunt ; young leaves lanceolate or oblanceo- 

 late, acuminate, glandular-serrulate, with small suborbicular stipules; mature 

 leaves lanceolate with long tajjering or very slender point, 4 to 7 inches long, 

 % to 114 inches wide ; petioles 3 to 9 lines long, glandular at the upper end : 

 stipules on vigorous shoots con.spicuous, orbicular, 5 to 12 lines broad; stanii- 

 nate catkins I14 to 3 inches long, usually straight, 5 to 6 lines thick ; pistillate 

 catkins I14 to 214 inches long, 2i/4 to 3 lines thick; scales erect, oblong-lanceo- 

 late, thin, nearly or quite glabrous on the back, hairy at base, the staminate 

 yellow, the pistillate brown and mostl.y decidinnis in fruit; stamens -i to 9; 

 ovary and capsule glabrous. 



Banks of living streams throughout the Coast Ranges, Sacramento and San 

 Joaquin valleys, and Sierra Nevada southward to Southern California and 

 northward to British Columbia and Idaho. In the Sierra Nevada it is found 

 chiefly in the foothills but ranges as high as 4.500 feet at the north and 8.500 

 feet at the south. Also called "Waxy Willow" and "Western Black Willow." 



Eefs. — S.A.LIX L.\siANDRA Bentham, PI. Hartw. p. 33.5 (1857), type loc. Sacramento River 

 between Sacramento and Marysville, Harttrcij; Jepson, Fl. W. Mid. Cal. p. 136 (1901). 



2. S. laevigata Bebb. Red Willow. Tree 20 to 50 feet high, the trunk 

 bark roughly fissured; one-winter-old brauehlets reddish brown; winter buds 

 ovate, jiointed; young leaves broadly oblong, acute at each end, disposed to 

 be broadest aliove the middle, niueronate, entire, soon becoming serrulate; 



