Acer O71 
at Ealing on May 23, 1882, but never throve, and has been dead for some years. 
This species is very rare in cultivation. I saw a young tree, about 20 feet high, in 
1906, at Grignon in France, where it exceeds the sycamore in rate of growth. 
(A. H.) 
ACER RUBRUM, Rep Map te 
Acer rubrum, Linneus, Sp. P/. 1055 (1753); Loudon, Ard. e¢ Frut. Brit. i. 424 (1838) ; Sargent, 
Silva N. Amer. ii, 107, tt. 94, 95 (1892), and Zvees N. Amer. 639 (1905). 
Acer coccineum, Michaux f., Hist. Arb, Am. ii. 203 (1810). 
Acer sanguineum, Spach. Ann. Sc. Nat. ser. 2, ii. 176 (1834). 
A tree attaining in America 120 feet in height and 15 feet in girth; with 
ascending branches. Bark of young stems smooth and light grey, becoming on old 
trunks darker, ridged, and separating on the surface into plate-like scales. Young 
branchlets green or red, slightly pubescent towards the tip. Leaves (Plate 207, 
Fig. 27) very variable in size, averaging 3 inches long and broad; either five-lobed, 
with two very small basal lobes, or three-lobed, the middle lobe the longest ; lobes 
short, triangular, acute or acuminate at the apex; sinuses very shallow, acute at the 
base ; base of the leaf truncate, slightly cordate or shortly cuneate ; margin non- 
ciliate, irregularly toothed, or doubly serrate; upper surface dark green, glabrous; 
lower surface silvery white, scattered pubescent, without axil-tufts; petioles without 
milky sap. The leaves turn scarlet or orange in autumn. 
Flowers appearing early in spring before the leaves, in few-flowered, umbel-like 
clusters encircling the branchlets of the previous year; dicecious or moncecious ; 
reddish ; pedicels long ; petals present; ovary glabrous. Fruit hanging on drooping 
stalks, ripening in June, and germinating as soon as it falls upon the ground; keys 
glabrous, about an inch long, at first convergent, afterwards divergent, brown or 
reddish in colour. 
The red maple can only be confused with the silver maple, from which it differs 
in the ascending branches and in the shape of the leaves, which are usually only 
three-lobed, always have very shallow acute sinuses, and are less cordate (often 
truncate) at the base than in A. dasycarpum. In winter the twigs are glabrous, 
reddish ; leaf scars very narrow, three-dotted, opposite pairs not united around the 
stem. Buds small, shortly stalked, reddish; external scales, six to eight, fringed 
with whitish cilia; lateral buds arising from the twigs at an angle of 45°. 
VARIETIES 
In addition to the typical form, above described, Sargent admits two well- 
marked varieties, occurring wild in America. 
1. Var. Drummondiz, Sargent. (Acer Drummondit, Hooker and Arnott, Journ. 
Bot. i. 200 (1834).) Leaves three-lobed, with short broad lobes, and covered on 
