Bulletin 3. The flora of the Raritan Formation, 1911 - State of New ...

152 THE RARITAN FLORA.
8 cm. in greatest breadth, which is toward the base. Apex
obtusely pointed, seldom preserved. Base varying fl-om cuneate
to truncate or somewhat eordate. Venation palmate,.principal
veins said by Heer to be five iu hum,her, although only a midrib
and two laterals on one side are shown in his fi_tre. The Raritau
leaves usually have four veins, two laterals on the convex side and
one on the straight side; they diverge from the base and are not
so stout as the midrib. Margins entire. Venation camptodrome,
more or less obsolete.
This species is somewhat suggestive of Menispermites obtusilobs
Lesq. of the Dakota Group, with which Professor Heer
compared it. The latter is, however, a much more symmetrical
leaf, larger in size, with undulate margins and a tendency toward
a trilobate form,. The fact that the laterals in the New Jersey
material are camptodrome might prevent its inclusion in this
genus were it not for the fact that the author of the genus also
included cr*mptodrome forms in it, as, for example, Menispermites
grandis Lesq., Menisper_rdtes ova¢is Lesq., and Meni_-
perm#es cyclophyllu.m Lesq.
Occurrence--Woodbridge.
Collections.--N. Y. Botanical Garden.
M_NISP_?R_::'r_:sWAImlANUS Holllck.
Plate XVIII, Fig. 3,
Menispern¢ites Wardlanus Hollick, in Newb., FI. Amboy Clays,
85, pl. 2p, f. 9, II, I896.
Description.--Leaves ovate in outline, unsymmetrical, with an
acute apex and a euneate base, 8 cm, to 9 era. in length by"about
4 cm. in greatest breadth, which is about midway between the
base and the apex. Margin entire. Midrib mediumly stout,
curved nearer the shortest margin. Two lateral primaries
diverge at an acute angle from its base and a fourth veiu of lesser
calibre diverges at the same point and approximately parallels the
more convex of the two margins. Tertiary venation obsolete.
These leaves were refd'red to Menispermites by their describer
because of their unsyn_netrical outline in accordance with Prof.
NEW JERSEY GEOLOGICAL SURVEY