LXX. CORYLA‘CEH: QUE’RCUS. - 865 
its upper edge with fine, long, flexible filaments. The bark of the young 
branches is frequently covered with a yellowish corky substance, like that 
which is found on the liquidambar and some kinds of elm. 
¥ 11. Q. optusi’LoBa Michr. The blunt-lobed-leaved, or Post, Oak. 
Identification. Michx. Quer., No. 1. t. 1.; Pursh, 2. p. 632.; Michx. Arb. Am., 2. p. 36. 
Synonymes. Q. stellata Willd. Sp. Pl. 4. p. 452. ; Iron Oak, Box white Oak, American Turkey 
Oak (so called, because the acorns, which are sweet, are eaten by the wild turkeys), upland white 
» Amer. 
Engravings. Michx. Quer., No.1. t.1.; N. Amer. Syl., 1. t.9.3 the plate of this tree in Arb. 
Brit., Ist. edit., vol. vii.; and our fig. 1573. 
Spec. Char., §c. Leaves oblong, slightly pubescent beneath, sharply wedge- 
shaped at the base : lobes obtuse, the lower ones deeply sinuated, and the 
upper ones dilated, and slightly 
bilobed. Calyx hemispherical. 
Fruit oval, and rather small 
(Michz.) A deciduous tree. New 
Jersey and Philadelphia. Height 
40 ft., with a trunk not more 
than 15 in. in diameter. In- 
troduced in 1819. 
The branches are bent into el- 
bows at certain distances, which 
renders the tree easily distinguish- 
able, even when the leaves have 
fallen. The bark is thin, and of a 
greyish white. The leaves are 
coriaceous, and of a dusky green 
above, and greyish beneath. In 
autumn, the ribs assume a rosy 
tint, but never that purplish red 1575. @Q. obtusfloba. 
which is observable in those of the 
scarlet oak. The acorns (fig. 1566.c), which are produced in abundance, 
are small, oval, and three parts covered with a slightly rugged greyish cup. 
¥ 12. Q. tyra‘ta Walt. The lyrate, or over-cup, Oak. 
Identification. Walt. Carol., 235.; Pursh, 2. p. 632.3; Michx. Quer., No. 3. t. 4. 
Synonymes. Swamp Post Oak, Water white Oak, Amer. 
ngravings. Michx. Quer., No. 3. t. 4.3 and our figs. 1574. and 1575. 
Spec. Char.,c. eaves subsessile, glabrous, lyrately sinuated ; much con- 
tracted in the middle, but dilated at the summit, and attenuated at the 
base: lobes angular; the upper part of the leaf divided into three lobes, 
which are tricuspidate at their extremities. Calyx globular, rough, and 
almost covering the acorn. (Michx.) A large deciduous tree. Carolina 
and other southern states. Height 50 ft. to 
80 ft. Introd. 1786. 
The leaves are from 6in. to 8 in. long, 
smooth, narrow, lyre-shaped, deeply sinuated, _ 
and borne on short 
petioles. The lobes, 
especially the upper 
ones, are somewhat 
truncated. The fo- 
liage is thick, and 
of a light agreeable 
tint; and the bark 
is white. The acorns 
are broad, round, 
and depressed ; and 
the cups, which are 
1574. Q. Iyrata. nearly closed over 1575. Qulyrhta, 
3K 
