pag 
CXXVII. SALICACEZ. Poprutus. 
_ Leaves elliptical, revolute at edge, obtuse at base, somewhat glaucous 
h. 
32. S. ampieua. Ehrh. Dubious Willow. 
Iws. elliptical, obovate or lanceolate, recurved at the point, entire or 
remotely denticulate, rugose-veiny beneath, silky-villous, at length glabrous ; 
stip. semi-ovate, straight ; aments sessile, briefly pedunculate in fruit; caps. 
tomentose, long-pedicellate ; sty. short; stig. emarginate.— White Mts. Tucker- 
man. A prostrate shrub, with leaves about 13° by. 3. 
33. S. PHYLICIFOLIA. 
Ivs. ovate or lanceolate, remotely repand-serrate, glabrous, glaucous 
beneath ; stip. semicordate, oblique at apex; aments bracteate, of sessile ; caps. 
pedicellate, conical-elongated, somewhat silky ; sty. long. —White Mts. Tuck- 
erman. A handsome, low shrub, spreading, with broad-elliptical, very smooth 
leaves, the mar epand-serrate. 
. Tuckerman. (S. Uva-ursi of 1st. edit., etc.?) Cutler’s 
. elliptical, acute or obovate, ath at base, glandular-den- 
ticulate, smo ove, glaucous-smoothish ben silky- villous when young; 
aments pedunculate, cylindric, dense ; caps. ovate-conic, briefly pedicellate, gla- 
brous ; scales obovate, black, silky; stig. bifid, lobes at length cleft.—W hite 
Mts. Tuckerman. .A low or ‘prostrate shrub. 
2. POPULUS. 
Lat. poputus, the people ; being often lanted by the public ways. 
Aments cylindric ; br sts lacerate ringed calycine scales tur- 
binate, obli ntire. d' Stamens «es superior ; style 
very short, : gma Inge 2-lo fe caps Praise 2-celled.— 
Trees of large dimensions. Wood soft and rae Ro petioles 
long, often compressed cally and fiend ~ Aments lateral, preced- 
ing the leaves. * 
1. P. TREMULOIDES. Mapican Aspen. White Poplar. 
Lvs. orbicular-cordate, abruptly acuminate, dentate ‘rate, pubescent at 
the margin.— Abundant in N. ‘England and in the ‘Middle States, growing in 
woods and open lands. Stem 25—40f in height, with < diameter of 8—12’. 
Bark greenish, smooth except on the trunk of ‘the old dest tree, Leaves small 
(2—24" long, and 14 as wide’, , darigmeee, on petioles which ae 2—3’ long and 
laterally compressed, so hat they can scarcely remain at rest in any position, 
and are thrown into excessive agitation by the slightest breeze. The trembling 
of the “ aspen leaf” is proverbial. Aments plumed with s n hairs, about 2’ 
long, pendulous, appearing in “ie long before the sa The wood is 
white, soft and light, of little val 
2. P. GRANDIDENTATA. Micha. Large Poplar. re 
Iws. roundish-ovate, acute, with large, unequal, sinuat & Kern, smooth, 
villous when young.—Woods and groves in the north s of the U. s., 
less common than the preceding species. Stem 40f high, with a diameter of 
1f, straight, covered with a smooth, greenish bark. Branches distant, coarse 
and crooked, clothed with leaves only at their extremities, Leaves 3—5’ long 
and nearly as wide, clothed with thick, white down in spring, but becoming 
perfectly smooth. The wood is white, soft, and quite durable. May. 
3. P. BeTULIFOLIA. Ph. (P. Hudsonica. Michz.) Birch-leaved or Black 
Poplar.—Lws. rhomboidal, long-acuminate, dentate, smooth; young 
branches pilose.—This poplar is found chiefly in the valleys of the Hudson and 
Connecticut. It is a tree of middle size, with grayish-white twigs, and dark 
pang buds. Leaves 33’ long and 2 broad, Aments 4—5/ long, without hairs. 
pri 
4. P. pausamirira. Balsam Poplar, 
Lws. ovate-acuminate, with close-pressed serratures, white and retjvinlate- 
veined beneath; duds resinous.—The balsam poplar, though nowhere abun- 
