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75 
outline. As in the case of the following hybrid, this one pro- 
duces on the same branches leaves almost identical in shape with 
those of the parents. Many, however, are intermediate, in vari- 
ous degrees resembling one or the other of the parent forms. 
The texture is about intermediate, and the pubescence on the 
lower surface less than in Q. digitata and much more than exists 
in true QO. Phellos. 
The cup and acorn, although not mature, each exhibit charac- 
ters which suggest Q. digitata rather than Q. nigra. Most of the 
trees noticed had the peculiar habit of forking about three feet 
from the ground into two erect secondary trunks. This charac- 
ter, together with the striking irregularity in the shape of the 
foliage, makes the trees quite conspicuous among their associates. 
QUERCUS GEORGIANA X Q. NIGRA. 
A small tree of a dark-green color and a somewhat straggling 
mode of branching, ranging from three to ten meters in height and 
having a trunk diameter varying from ten to twenty-five centimeters 
clothed with a dark, smooth, glabrous bark, which becomes rough 
onthe trunk. The leaves are mostly obovate in outline, sometimes 
oblong, 4-20 cm. long, 2.5-15 cm. broad, 3-5-lobed, dark green 
and shining above, brown and dull beneath, glabrous on both sur- 
faces, except a small tuft of stellate hairs in the axils of the nerves 
on the lower side, obtuse or acute, equilateral or inequilateral at the 
base, the, sinuses either shallow or deep, sometimes penetrating 
almost to the midrib; the lobes rounded or square-oblong and 
slightly lobed at the ends, all ending in a slender apiculation; fruit 
12-15 mm. long, 13-16 mm. broad, short-stalked, peduncle 4-6 
mm. long; cup saucer-shaped or slightly turbinate, reddish, the 
scales triangular, the acorn depressed-globose, pubescent, some- 
times sparingly striped, ending in a short, abrupt apiculation. 
(Plate 233.) 
Northern slope of Stone Mountain, DeKalb county, Georgia. 
On the northern slope of Stone Mountain, at an altitude of 
about 1300 feet, there is a grove of stunted trees of various 
species of oaks, Quercus Georgiana and Q. nigra predominat- 
ing. I had been in the grove a number of times, but noticed 
nothing peculiar until January, 1894, when my attention was 
called to some odd shaped leaves on the ground and anomalous 
acorns on the branches overhead. This material suggested a hy- 
brid form. Last September I visited the same spot to secure 
fresh foliage from the trees and make some further observations. 
