Trees, Shrubs and Vines 
185. Long-stalked Willow. (Salix petiolaris.) 
LEAF: as in 184, but not so silky beneath, and when mature 
with a bloom; not as black when dry ; 4°-15° high. 
186. Myrtle Willow. (Salix myrtilloides.) 
LEAF: I'-2', simple, alternate, entire, edge rolled under, ellip- 
tical to oblong, very smooth, lighter or with bloom beneath, 
rather thick. New England, westward, and New Jersey; 1°-3°. 
187. Livid Willow. (Salix livida.) 
LEAF: 2'-3', simple, alternate, oblong or long-obovate, apex 
sharp, scarcely toothed, downy above, deneath veiny, soft-hairy 
and with bloom. New England to Pennsylvania, and west. 
188. Dwarf Birch. (Betula glandulosa.) 
LEAF: %4'-34', simple, alternate, round-toothed, obovate with 
wedge-shaped base, or quite roundish, thickish, both sides green ; 
branchlets strongly marked with wart-like dots. FLOWER: stam- 
inate in long and pendent, pistillate in short, catkins; early 
spring, before or with leaves. High mountains of northern 
frontier, and shore of Lake Superior ; 1°-4° high. 
189. Green Willow. Mountain Willow. (Salix chloro- 
phylla.) 
LEAF: 1'-3', oblong to reverse-lance-shaped, mostly entire, 
glossy, very smooth, leathery when mature. Alpine tops of White 
Mountains ; low, spreading. 
190. Herb Willow. (Salix herbacea.) 
LEAF: 1’, simple, alternate, ~ousdish, serrate, base cordate, 
apex notched, glossy. Alpine tops of mountains in New Eng- 
land ; smallest willow, branches only one or two inches high 
from creeping stem. 
191. Bear-berry Willow. (Salix Uva-ursi.) 
LEAF: 3%’, simple, alternate, slightly serrate, elliptical with 
apex sharp, or obovate and blunt, g/ossy, a little bloom beneath. 
Alpine tops of mountains in New England and New York; very 
low shrub. 
300 
