SALICACEZ. 
SILVA OF NORTH AMERICA. 
139 
SALIX LASIOLEPIS. 
White Willow. 
LEAvEs oblanceolate or lanceolate-oblong, dark green on the upper surface and 
pale and glaucous and pubescent or puberulous on the lower. 
Salix lasiolepis, Bentham, Pl. Hartweg. 335 (1857). — 
Andersson, Ofvers. Vetensk. Akad. Férhandl. xv. 118 
(Bidr. Nordam. Pilarter) ; Proc. Am. Acad. iv. 58; De 
Candolle Prodr. xvi. pt. ii. 264.— Walpers, Ann. v. 
747. — Bebb, Brewer & Watson Bot. Cal. ii. 86; Bot. 
Gazette, xvi. 104. — Sargent, Forest Trees N. Am. 10th 
Census U. S. ix. 170. — Coville, Contrib. U. S. Nat. Herb. 
iv. 199 (Bot. Death Valley Exped.). — Greene, Man. Bot. 
Bay Region, 300. 
Salix Bigelovii, Torrey, Pacific R. Rh. Rep. iv. pt. v. 139 
(1856 ?). — Andersson, Ofvers. Vetensk. Akad. Férhandl. 
xv. 118 (Bidr. Nordam. Pilarter) ; Proc. Am. Acad. iv. 
58 ; Svensk. Vetensk. Akad. Handl. ser. 4, vi. 163 (Mo- 
nographia Salicum); De Candolle Prodr. xvi. pt. ii. 
Salix Bigelovii, a latifolia, Andersson, Svensk. Vetensk. 
Akad. Handl. ser. 4, vi. 163 (Monographia Salicum) 
(1867) ; De Candolle Prodr. xvi. pt. ii. 255. 
Salix Bigelovii, b angustifolia, Andersson, Svensk. Vet- 
ensk. Akad. Handl. ser. 4, vi. 163 (Monographia Sali- 
cum) (1867); De Candolle Prodr. xvi. pt. ii. 255. 
Salix Bigelovii, var. fuscior, Andersson, Svensk. Vetensk. 
Akad. Handi. ser. 4, vi. 163, £. 94 (Monographia Sali- 
cum) (1867); De Candolle Prodr. xvi. pt. ii. 255. 
Salix 9, Watson, King’s Rep. v. 325 (1871). 
Salix lasiolepis, var. Bigelovii, Bebb, Brewer & Watson 
Bot. Cal. ii. 86 (1880). 
Salix lasiolepis, var. (?) fallax, Bebb, Brewer & Watson 
Bot. Cal. ii. 86 (1880). 
255. — Walpers, Ann. v. 747.— Greene, Man. Bot. Bay 
Region, 299. 
A tree, from twenty to thirty or occasionally fifty feet in height, with a trunk from twelve to 
eighteen inches in diameter, and slender erect branches which form a loose open head ; or often, at the 
north and at high elevations, reduced to a low shrub. The bark of old trunks is dark, about a third 
of an inch thick, roughened by small lenticels and broken into broad flat irregularly connected ridges ; 
on young: stems and on the branches it is much thinner, smooth, and light gray-brown. The branchlets 
are stout, coated at first with hoary tomentum, and during their first year bright yellow or dark reddish 
The buds 
spread slightly from the stem and are ovate, acute, compressed, rounded anteriorly and posteriorly, 
brown and puberulous or pubescent, becoming darker and glabrous in their second season. 
contracted laterally into thin wing-like margins, light brownish yellow, and glabrous or puberulous. 
The leaves are involute in the bud, oblanceolate or lanceolate-oblong, often inequilateral and occasion- 
ally falcate, gradually narrowed and wedge-shaped or abruptly contracted and wedge-shaped and cuneate 
or rounded at the base, acute or acuminate and apiculate or rarely rounded at the apex, and entire or 
remotely serrate with minute spreading callous teeth; when they unfold they are pilose above and 
coated below with thick hoary tomentum, and at maturity are thick and subcoriaceous, conspicuously 
reticulate-venulose, dark green and glabrous on the upper surface, pale or glaucous and pubescent or 
puberulous on the lower, from three to six inches long and from half an inch to an inch wide, with 
broad yellow midribs and slender arcuate veins forked and united within the slightly thickened and 
revolute margins; they are borne on slender petioles which vary from one eighth to one half of an 
inch in length, and at the south often remain on the branches until the appearance of the flowers in 
winter or early spring. The stipules are ovate, acute, coated with hoary tomentum, minute and 
caducous, or sometimes foliaceous, semilunar, acute or acuminate, entire or denticulate, dark green on 
the upper surface, pale on the lower, and persistent. The aments, which appear from December at the 
south to March at the north, are erect, cylindrical, slightly flexuous, densely flowered, and nearly sessile 
on abbreviated tomentose branchlets which bear two or three small leaves or caducous hairy scales ; 
