SALDC 



49 



mostly dark brown, 



youngest thinly 



pubescent (more 



densely so in var. 



latifolia), older 



glabrous; buds 



large, 4-7 (-lO)mm. 



long 16. S. discolor 



e. Twigs and buds more 

 or less hairy, not shin- 

 ing. 



f. Tall shrubs to 5 or 

 6 m. high; twigs and 

 buds mostly midsized 



g. Bark brown; twigs 



slender to midsized, 



longish, 2-5 mm. in 



basal diameter, yellow 



to yellowish-brown 10. S. rigida 

 g. Bark brown ;twigs 



midsized to stout- 



ish, 2-5 (-7)mm. in 



basal diameter, 



short to long, yellow 



or yellowish-brown 



to dark brown(densely 



white-tomentose on 



the common var, 



albovestita, with buds 



to 8 mm. long) 12. S. glaucophyl- 



loides 



f. Shrub or small tree, 



2 to 6 (-9)m. high; 



bark grayish, rough, 



scaly ;twigs 1-3 (-4) 



mm. at base, reddish 



to dark brown, often 



divaricate, the shorter 



often crooked; buds mid- 

 sized 19. S. bebbiana 

 f. Low, many-stemmed 



shrub to 1 m.high; 



twigs slender, 1-3 mm. 



