SAPINDACEZ. SILVA OF NORTH AMERICA. 103 
ACER SACCHARINUM. 
Silver Maple. Soft Maple. 
FLowers sessile in axillary fascicles; ovary and young fruit tomentose. Leaves 
deeply 5-lobed. 
Acer saccharinum, Linnzus, Spec. 1055. — Koch, Hort. 11, f. 17, 18, 18°, 26, 27. — Koch, Dendr. i. 541. — Bell, 
Dendr. 80.— Sargent, Garden and Forest, ii. 364. Geolog. Rep. Canada, 1879-80, 53°. — Ridgway, Proc. 
A. Saccharum, Marshall, Arbust. Am. 4. U. S. Nat. Mus. 1882, 62. — Sargent, Forest Trees N. 
A. rubrum, Lauth, De Acere, 11 (not Linnzus). — Lamarck, Am. 10th Census U.S. ix. 49. — Pax, Engler Bot. Jahrb. 
Dict. ii. 380 (excl. var. 8.). vil. 179. — Watson & Coulter, Gray’s Man. ed. 6, 117. — 
A. dasycarpum, Ehrhart, Beitr. iv. 24.— Moench, Meth. Wesmael, Gen. Acer, 11. 
56. — Persoon, Syn. i. 417. — Willdenow, Spec. iv. 985; A. rubrum mas, Schmidt, Oestr. Baum. i. 11, t. 7. 
Enum. 1044. — Aiton, Hort. Kew. ed. 2, v. 446.— A. rubrum, var. pallidum, Aiton, Hort. Kew. iii. 434. 
Pursh, Fl. Am. Sept. i. 266.— Nuttall, Gen. i. 252; A. eriocarpum, Michaux, Fl. Bor.-Am. ii. 253. — Desfon- 
Sylva, ii. 87. — Hayne, Dendr. Fl. 213. — Elliott, Sk. i. taines, Ann. Mus. vii. 412, t. 25, f.1; Hist. Ard. i. 392. — 
449. — Torrey, Fl. N. Y. i. 136, t. 18. — Sprengel, Syst. Poiret, Lam. Dict. Suppl. ii. 573. — Trattinick, Archiv. 
ii. 225. — Tausch, Regensb. FI. xii., ii. 553. — Hooker, FT. i. t. 8.— Michaux f. Hist. Arb. Am. ii. 205, t. 18.— 
Bor.-Am. i. 113.— Bigelow, Fl. Boston. ed. 3, 407. — Nouveau Duhamel, iv. 30.— De Candolle, Prodr. i. 
Torrey & Gray, Fl. N. Am. i. 248.— Emerson, Trees 595.— Don, Gen. Syst. i. 650.— Spach, Hist. Veg. iii. 
Mass. ed. 2, ii. 556, t. — Darlington, Fl. Cestr. ed. 3, 116; Ann. Sci. Nat. ser. 2, ii. 177.— Darlington, FV. 
46. — Chapman, Fl. 81. — Curtis, Rep. Geolog. Surv. N. Cestr. 116; ed. 2, 245. — Dietrich, Syn. ii. 1282. 
Car. 1860, iii. 51.— Buchenau, Bot. Zeit. xix. 285, t. 
A large tree, ninety to a hundred and twenty feet high, with a trunk three or four feet in 
diameter, which generally divides, ten or fifteen feet from the ground, into three or four stout upright 
secondary stems destitute of branches for a considerable length, and brittle pendulous branchlets. The 
bark of the trunk is from a half to three quarters of an inch thick, reddish brown and more or less 
furrowed, its surface separating into large thin scales. The bark of the young stems and large branches 
is smooth and gray tinged with red. The branchlets are at first light green and covered with lenticels, 
but soon become darker, and in the autumn and winter of their first year are bright chestnut-brown with 
a smooth and very lustrous surface, and are covered with large pale lenticels, and indistinctly marked at 
the base with the scars left by the falling of the inner bud-scales; in the second season they are pale 
rose-colored or gray faintly tinged with red, the lenticels then being of the same color as the remainder 
of the bark. The leaf-buds are an eighth of an inch long and covered with thick ovate bright red 
imbricated scales rounded on the back, minutely apiculate, and ciliate along the margins; those of the 
inner ranks are pale green or yellow, an mch long at maturity, acute, pubescent on the inner surface, 
and caducous. The leaves are deeply five-lobed by narrow sinuses with acute irregularly and remotely 
dentate divisions, the middle lobe often being three-lobed; they are truncate or somewhat heart-shaped 
at the base, six or seven inches in length and rather less in breadth, membranaceous, bright pale green 
on the upper surface, and silvery white and at first slightly hairy, especially in the axils of the pri- 
mary veins, on the lower surface, and are borne on slender drooping bright red petioles four or five 
inches long. They turn pale yellow in the autumn before falling. The flowers are produced in sessile 
axillary fascicles on shoots of the previous year, or on short spur-like branchlets developed the year 
before from the wood of the preceding season. The staminate and pistillate flowers appear in separate 
clusters, sometimes together and sometimes on different trees, and are produced from aggregated obtuse 
buds covered with thick ovate pubescent red and green scales furnished on the margin with a thick 
fringe of long rufous hairs. They are greenish yellow and destitute of petals, and open during the 
