868 ARBORETUM ET FRUTICETUM BRITANNICUM. 
somewhat elongated, similarly rounded at both ends, and very sweet. 
Highly ornamental when in full bloom, and most prolific in acorns 
even when only 3 or 4 feet high. 
* Q. P. 5 tomentisa Michx. Quer. No. 5. t.9 f. 2. Q, P. discolor 
Miche. N. Amer, Syl.i. p. 43. t.7. (our jig. 1580.); Q. bicolor 
Willd. Sp. Pl.iv. p.440.; Q. Michaixi Nutt.; the Swamp white 
Oak. — Leaves almost sessile, obtusely oval, bluntly toothed ; downy 
beneath. (iMichx.) A large deciduous tree. United States gene- 
rally. Height 60ft. to 70ft. In- 
troduced in 1800. The leaves are 
from 6in, to 8in. long, and 4 in. 
broad ; entire towards the base, 
which is attenuated and wedge- 
shaped ; but dilated and coarsely 
toothed for two thirds of their 
length. The tree is distinguished, 
when full grown, by the remarkable 
appearance of its leaves ; which are 
on the under side silky and of a 
silvery whiteness, while the upper 
side is smooth and of a bright 6S 
green. The acorns (jig. 1566. d) are 
long, of a clear chestnut brown, and 
contained in rather shallow scaly 
cups, edged with short slender fila- 1580. @. P. tomentosa. 
ments. These cups are more downy 
within than those of any other oak; and they are borne in pairs, on 
peduncles of from 1 in. to 2in. in length. The bark is scaly, as in 
all the preceding varieties, and of a greenish white. 
§v. Rubre. Red American Oaks. 
Sect. Char. Leaves deeply lobed, sinuated, multifid, and mucronated. Bark 
dark, and not scaling off. Fructification biennial. Nut ovate, with a per- 
sistent style. Cup imbricate, large in proportion to the nut. — Trees, varying 
from 80 or 90 feet to 15 or 20 feet in height ; remarkable for the bright 
red, deep scarlet, or dark purple, of their foliage, when it dies off in autumn. 
Perhaps most of the kinds in this section might be reduced to two or three 
species; but, as they come up tolerably true from seed, we have, for the 
cultivator, considered it more convenient to treat them as distinct. The 
hardiest and most rapid-growing, and at the same time the most elegant and 
ornamental, tree of the section is Q. palustris, which, with its spreading 
drooping branches, and its straight erect trunk and spiry top, is, indepen- 
dently of its lively scarlet, orange, and red colours in spring and autumn, in 
our opinion the most graceful of all oaks, either European or American. 
¥ 14. Q. Ru‘Bra L. The red, or Champion, Oak. 
Identification. Lin. Sp. Pl., 1413, ; Pursh Fl. Amer. Sept., 2. p. 630. ; Michx. Quer., No. 20. 
Synonyms Q. E’sculi divisura, &c., Pluk. Phyt. t. 54. ¢ 4. 
Lngravings. Pluk. Phyt., t. 54. f.4.; Michx. N. Amer. Syl., 2. t. 28.3; the plates of this species in 
Arb. Brit., lst edit., vol. viii. ; and our figs. 1581. and 1582. 
Spec. Char.,§c. Leaves smooth, oblong, sinuated, on long stalks: lobes acute, 
sharply toothed, bristle-pointed. Calyx of the fruit flat underneath. 
Nut ovate. / Willd.) A large deciduous tree. Canada and the whole of 
the North of the United States. Height 80 ft. to 90ft. Introduced in 
1739. Flowers greenish white; May. Acorns brown, occasionally 
ripened in England in October. 
Varieties. Aiton, in the Hortus Kewensis, 2d ed., mentions two forms of ‘this 
species: Q. rubra latifolia, the champion oak, which is the Q. rubra of 
Linnzus ; and Q. rdibra montana, the mountain red oak. 
