26 
sprouts from an original tree, which was cut down probably twenty- 
five years ago. The three trunks are of about equal size — about 
twenty feet high — and branch within six feet of the ground. The 
bark k closer and darker colored than that of the white oak. The 
leaves in outline, but not in lobation, are much like those of the 
Saul's hybrid, being six or seven inches long, and narrow, with about 
four pairs of lobes; most of the sinuses reaching within half an inch 
or less of the midrib. The base of the leaf is generally obtuse and 
rounded, gradually widening for an inch or more to the first pair of 
lobes, which are scarcely more than coarse teeth. The remaining 
lobes are rather irregular, there being usually two or three pairs of 
large ones of about an inch in length each, then a pair of small 
short ones or teeth, ending in a narrow acutish point of about half 
an inch. The middle pair of lobes is the longest and broadest, 
making the greatest breadth of the leaf, which is about two inches. 
The under surface of the leaf is of a light gray, with a minute and 
sparse pubescence. The lobes generally point strongly forward, but 
frequently one or two diverge nearly at right angles. The upper 
surface is smooth, dark green, and the texture is considerably thicker 
and firmer than in Q, alba. The petiole is about an inch long, nar- 
row, but less flexible than in No. i, and destitute of the yellowish 
color. The acorns mature mostly in twos, and the common peduncle is 
about half an inch' long, and thick. The acorns are about the size 
and form of those of Q. alba^ the cup covering about one-third, 
with a thin edge, and with close sraoothish scales. This tree seems 
to show a mixture of Q^ alba and Q. stellaia^'^iih. a preponderance 
of ^. alba. 
Hybrid No, 3. (Plate xxx.) — This tree grows close by the road- 
side about two miles north of the city, near what is called Piney 
Branch. It is, perhaps, twenty-five feet in height, and the trunk a 
foot in diameter. The bark and general habit of the tree is much 
like that of Q. siellaia, the bark being close and dark in color. The 
leaves, in length, are five or six inches, slightly shorter than in 
hybrids numbers one and two, and broader. There are about five 
pairs of lobes, of which the third and fourth are the largest and 
broadest. They are coarser and wider, and have greater divergence 
than in the others, and the central part of the leaf is broader. The 
lower surface is grayish, rougher and more pubescent than in number 
two. The upper surface is of a dark shining green. The leaf is 
firmer in texture than in either of the others,; the petiole is stiffer; and 
in outline, rigidity and roughness it shows an evident approach 
toward Q. stellata. The same relationship is manifested in the 
acorns, which are broader and more depressed than those of Q. alba, 
evidently approaching those of Q. stellata, but much larger. In 
other respects it is Q. alba. 
New or Little-Known Ferns of the United States. No. 13. 
By D. C. Eaton. 
43- Polypodium thysanolep's, Al. Braun. — Rootstock creeping, 
densely scaly ; stalks two to six inches long ; fronds as long as the 
stalks, ovate in outline, sub-coriaceous, slightly scaly above, clothed 
