BERRY: MESOZOIC FLORA OF ATLANTIC COASTAL PLAIN 183 
- apical pairs being somewhat shorter than the medial pairs. This 
form of leaf is very suggestive of some species of Quercus, but its 
variations, as well as its venation, show that it is related to 
Liriodendron. ‘The petiole is preserved for a considerable length 
and is very stout, as is the midrib. There is one main secondary 
traversing each lobe and running directly to its apical point. 
In addition there are one or more camptodrome secondaries in 
each lobe which anastomose with branches from the main second- 
ary, their number being dependent upon the relative width of 
the lobe; they branch from the midrib at angles of about sixty 
degrees. 
At first sight this species appears to differ considerably from 
Liriodendron oblongifolium and from the modern form, but this 
difference is not nearly as great as it seems, and it is probable that 
Liriodendron querctfolium is simply a variation from the common 
ancestor of the two species in the direction of Liriodendron pinnati- 
fidum Lesq. Numerous leaves of the modern tree can be found 
with an incipient lobation suggesting Liriodendron quercifolium. 
In these, however, the sinus is comparatively shallow and rounded, 
so that the general appearance of the two is not markedly similar. 
OccURRENCE: Mine Creek, three and one half miles north of 
Nashville, Howard County. 
MENISPERMACEAE 
MENISPERMITES Lesquereux 
Menispermites integrifolia sp. nov. 
Leaves deltoid-ovate in outline, with a short sharply pointed 
apex and a truncate or slightly cordate peltate base. Length 
about 6.5 cm. Maximum width, in the basal part of the leaf, 
about 6.5 cm. Mesias caitiee, full and rounded. Texture sub- 
coriaceous. Petiole missing. Midrib stout, enlarges proximad. 
Lateral primaries subopposite, suprabasilar, but slightly differ- 
entiated from true secondaries, of which they constitute the secon 
pair: they diverge from the midrib at angles of about t forty-five de- 
greesor slightly more, more than half of the 
distance to the margin where they ct curve : upward and are eventually 
camptodrome. Secondaries well marked, four or five opposite 
to alternate pairs, irregularly spaced, one pair below the primaries, 
camptodrome. Primaries give off on their outer sides, three to 
