

ADJACENT TO HORTICULTURAL HALL. 47 

but not durable; leaves cleft about half-way down, notches in the leaves broad, 
lobes sharp- or bristle-pointed, turning dark red in autumn ; acorn large, nearly 
as broad as long, in a rather shallow cup. Engelmann considers Q. amdbigua 
of Michaux a form of this; and Q. dorea/is is another name, given on account 
of its high northern range. * Variety runcinata, Zmge/mann; is a narrow 
lobed dentate leaved form from near St. Louis, Missouri. 
Quercus sideroxyla, Humboldt and Bonpland. Is a biennial-fruited, tall 
tree from the temperate regions of Mexico. Leaves oblong, or with a wedge- 
. shaped base, with spine-tipped teeth above the middle, slightly hairy on the 
under surface. Young branches velvety. 
Quercus Suber, Zinmneus. CoRK OAK. This tree is a native of Southern 
Europe, and common in Portugal and France, whence much of the cork in 
the market is derived. Annual-fruited, smallish tree, with the young branches 
and under surface of the leaves velvety hairy ; leaves oval or oblong, acutely 
toothed, or sometimes entire; acorns long, cylindrical, nearly half immersed 
in the cup. Of great importance in the arts. The museum of Horticultural 
Hall shows specimens grown in Carolina, as Michaux long ago asserted it 
could be. 
Quercus stellata, Wangenheim. Post OAK, RouGH or Box WHITE OAK. 
( Quercus obtusiloba, Michaux, in Gray’s Manual; Q. villosa, Walter.) Small, 
annual-fruited tree of the White Oak group. Wood dense and durable; thick 
leaves deeply cleft into obtuse wavy lobes, grayish downy on under surface, 
paler and rough above. Native, and common in poor soil. 
Quercus tinctoria, Bartram. See Q. coccinea, var. tinctoria, of this Cata- 
logue. 
Quercus Toza, Bosc. PYRENEAN OAK. (Quercus Pyrenaica, Willde- 
now; Q. Tauzin, Persoon.) Branches pubescent; leaves 2 to 4 inches long 
and % to 1% inches wide, obtuse, heart-shaped or wedge-shaped at base, 
upper surface dark green and covered with stellate hairs, densely brown hairy, 
more or less deeply lobed or cleft. From Southwestern Europe. The Arbo- 
retum Muscaviense places Q. camata of the gardens here. 
Quercus Turneri. TURNER’s OAK. Under this name two distinct trees 
are known, and in want of proper material we cannot decide which one is 
intended by the invoice. They are either Q. Lusitanica, Wedd, var. brevi- 
cupulata, 4/p4. De Candolle, with leaves obtusely or sharply crenately toothed, 
and densely hairy on the under side; or Q. Turneri of the gardens, which is 
QO. pseudosuber, Santi, the leaves of which are ovate or oblong, teeth spiny- 
tipped, and both branchlets and leaves with very short stellate hairs; bark 
corky. Probably the latter is intended. 
* Quercus undulata, Zorrey. “A scrubby White Oak of the Rocky 
Mountain region, and through Arizona; annual-fruited ; very variable in foliage 
and to some extent also in stature and habit.”” Acorns edible, rather sweet, 
though still astringent. 
Quercus Vallonea, XAofschy. GREAT PRicKLY-CuPpPED OAK. (In part 
Quercus A-gilops, Linneus.) Younger parts densely covered with very short, 
stellate white hairs; oval leaves obtuse or cordate at base, irregularly and 
sharply toothed; cup nearly globose, the upper scales of which are linear and 
