SALICACEZ. SILVA OF NORTH AMERICA. 161 
POPULUS GRANDIDENTATA. 
Poplar. 
LEAVES broadly ovate, coarsely crenate, coated at first, like the buds, with hoary 
tomentum ; petioles elongated, laterally compressed. 
Populus grandidentata, Michaux, Fl. Bor.-Am. ii. 248 Hort. Belg. 1861, 324, f. 3 (Monogr. Pop.) ; De Can- 
(1803). — Persoon, Syn. ii. 624. — Desfontaines, Hist. 
Arb. ii. 466. — Du Mont de Courset, Bot. Cult. ed. 2, vi. 
400. — Michaux f. Hist. Arb. Am. iii. 287, t. 8, £. 2. — 
Pursh, Fl. Am. Sept. ii. 619.— Bigelow, Fl. Boston. 
241. — Poiret, Lam. Dict. Suppl. iv. 377. — Nuttall, 
Gen. ii. 239. — Hayne, Dendr. Fl. 200. — Elliott, Sk. ii. 
710. — Sprengel, Syst. ii. 244. — Tausch, Flora, xxi. pt. 
ii. 753 (Dendr. Exot.-Bohem.). — Hooker, Fl. Bor.-Am. 
ii. 154.— Spach, Ann. Sci. Nat. sér. 2, xv. 33 (Revisio 
Populorum) ; Hist. Vég. x. 384. — Torrey, Fl. N. Y. ii. 
214, t. 121.—- Emerson, Trees Mass. 242; ed. 2, i. 278, 
t. — Seringe, Fl. des Jard. ii. 56. — Darlington, FV. Cestr. 
ed. 3, 281.— Chapman, 7. 431.— Curtis, Rep. Geolog. 
dolle Prodr. xvi. pt. ii. 326; Mém. Soc. Sci. Hainaut, 
sér. 3, ili. 233, t. 4 (Monogr. Pop.). —K. Koch, Dendr. 
ii. pt. i. 487. — Watson, Am. Jour. Sci. ser. 3, xv. 135. — 
Beal, Am. Nat. xv. 34, £. 2. — Lauche, Deutsche Dendr. 
ed. 2, 316. — Sargent, Forest Trees N. Am. 10th Census 
U. S. ix. 172.— Watson & Coulter, Gray’s Man. ed. 6, 
486.— Dippel, Handb. Laubholzk. ii. 195. — Koehne, 
Deutsche Dendr. 79. 
Populus grandidentata, 8 pendula, Nuttall, Gen. ii. 239 
(1818). — Torrey, Compend. Fl. N. States, 375. — Lou- 
don, Arb. Brit. iii. 1651. — Wesmael, De Candolle Prodr. 
xvi. pt. 2,326; Mém. Soc. Sci. Hainaut, sér. 3, iii. 234 
(Monogr. Pop.). 
Surv. N. Car. 1860, iii. 73. — Wesmael, Bull. Féd. Soc. 
A tree, often sixty or seventy feet in height, with a trunk occasionally two feet in diameter, and 
slender spreading rather rigid branches which form a narrow round-topped head ; or generally smaller 
and usually not more than thirty or forty feet tall. The bark of the trunk near the base of old 
trees is from three quarters of an inch to an inch in thickness, dark brown tinged with red, irregu- 
larly fissured and divided into broad flat ridges roughened on the surface with small thick closely 
appressed scales; on younger stems and on the branches it is thinner, smooth, and light gray tinged 
with green. The branchlets are stout, marked with scattered oblong orange-colored lenticels, and 
coated at first, as are the unfolding leaves, the young petioles, and the stipules, with thick short hoary 
tomentum which soon disappears; during their first year they are dark red-brown or dark orange- 
color, and glabrous and lustrous, or covered with a delicate gray pubescence, and in their second year 
become dark gray sometimes slightly tinged with green and much roughened by the thickened elevated 
three-lobed leaf-scars. The buds spread from the branch at wide angles and are terete, broadly ovate, 
acute, with light bright chestnut-brown scales which, when the buds are first formed in summer, are 
coated with hoary pubescence or tomentum, and during the winter are puberulous, especially on their 
thin scarious margins ; they are about an eighth of an inch long and not more than half the size of the 
flower-buds, which otherwise resemble them. The leaves are broadly ovate, three-ribbed, short-pointed, 
and coarsely and irregularly crenate with stout incurved callous teeth except at the broad abruptly 
wedge-shaped truncate or rounded base; they soon become glabrous, or occasionally on vigorous shoots 
they remain tomentose below during the season, and at maturity are thin and firm in texture, dark 
green on the upper surface, paler on the lower, from three to four inches long and from two to three 
inches broad, with prominent yellow ribs raised and rounded on the upper surface, conspicuous forked 
veins and reticulate veinlets; they are borne on slender laterally compressed petioles from one and a 
half to two and a half inches in length, and turn bright clear yellow in the autumn before falling. 
The stipules are linear, from one half to three quarters of an inch long, and caducous. The flower 
aments, which appear during the month of April or late in March, the staminate flowers usually opening 
