XIIL ACERA‘CEE: A‘CER. 89 
¥ A. vo. 4. lobdtum, A. lobatum Fisch., has the lcaves 7-lobed, accord- 
ing to Don’s Miller, but the young plants bearing this name in the 
Hort. Soc. Garden, which was raised from seeds received from Dr. 
Fischer of Petersburg, appears obviously to belong to 4. obtusatum. 
D. Leaves 5-, rarely 7-lobed. 
¥ 10. A. O’patus Ait. The Opal, or Italian, Maple. 
dacnification.. Ait. Hort. Kew., 3. p.436.; Dec. Prod., 1. p. 594.; Don’s Mill., 1. p. 649.; Webb Iter 
ispan., 60. 
Synonymes. A. rotundifdlium Lam. Dict. 3. p.382.; 4. italum Lauth Ac. No. 8.; A. villdsum 
Presl; VE‘rable Opale, E’rable a Feuilles rondes, or E’rable d'Italie, Fr.; Loppo, fal. 
Derivation. The specific appellation of O’palus has been given to this species, probably from the 
thick opal-like aspect of the leaves. i 
Engravings. Baudril. Traité, &c., vol.5. p.13.; the plate of this species in Arb. Brit., Ist edit., 
vole va our jig. 135.3; and fig. 156., of the leaves, of the natural size, in the plate forming 
p. 115. 
Spec. Char., §c. Leaves more or less heart-shaped, roundish, 5-lobed, smooth 
beneath ; the lobes generally obtuse, and coarsely serrated. Flowers in 
drooping corymbs. Keys smooth. (Pen. Cyc.) A low deciduous tree. 
Corsica. Height 8 ft.to 12ft. Introd. 1752. Flowers whitish; May to 
June. Keys small, brown; ripe Sept. Decaying leaves yellowish brown. 
A branchy tufted tree, covered with smooth leaves, somewhat coriaceous, 
roundish, indented, with five blunt lobes, deep green on the upper surface, and 
155. Acer O'palus. 
somewhat glaucous underneath, with long red petioles. Its flowers are whitish, 
in short racemes; and the small fruits, or keys, which succeed them, are 
almost round. It is found in forests and on mountains in Corsica; in Spain, 
on the Sierra Nevada ; and in Italy, where, from the denseness of its shade, 
it is sometimes planted by road sides, and in gardens near houses. The red 
colour of the petioles of the leaves, of the fruits, and even the red tinge of 
the leaves themselves, more especially in autumn, give it rather a morbid 
appearance. It pushes later in the spring than most of the other species. 
¥ 11. A. crrcina‘rum Pursh. The round-leaved Maple. 
Identification. Pursh Fl. Amer. Sept., 1. p.267.; Dec. Prod., 1. p.595.; Don’s Mill., 1. p. 651. 
Tor, and Gray, 1. p. 247. , 
Engravings. Wook. Amer., t.39.; our fig. 186.; and fig. 157. of the leaves, of the natural size, in 
the plate forming p. 116. 
Spec. Char.,§c. Leaves orbicular, rather cordate at the base, 7-lobed, smooth 
on both surfaces ; lobes acutely toothed ; nerves and veins hairy at their 
origin. (Don’s Mill.) A deciduous tree of the middle size. N. W. coast 
of North America, between lat. 43° and 49°. Height 20 ft. to 40ft. In- 
trod. 1826. Flowers with the sepals purple, and the petals white; April and 
May. Keys purplish brown, with thin straight wings, which are so diva- 
ricate as to form rizht angles with the peduncle ; the lower margin scarcely 
