152 THE RARITAN FLORA. 



8 cm. in greatest breadth, which is toward the base. Apex 

 obtusely pointed, seldom preserved. Base varying from cuneate 

 to truncate or somewdiat cordate. Venation palmate, principal 

 veins said by Heer to be five in number, although onl}^ a midrib 

 and two laterals on one side are shown in his figure. The Raritan 

 leaves usually have four veins, two- laterals on the convex side and 

 one on the straight side ; the}^ diverge from the base and are not 

 so stout as the midrib. Margins entire. Venation camptodrome, 

 more or less obsolete. 



This species is somewdiat suggestive of Menisperinitcs obtusi- 

 loba 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 w^ere it not for the fact that the author of the genus also 

 included camptodrome forms in it, as, for example, Menisper- 

 mites ,grandis Lesq., Mcnisperrmtes ovalis Lesq., and Mcnis- 

 pennites cyclophyUuin Lesq. 



Occurrence — Woodbridge. 



Collections. — N. Y. Botanical Garden. 



Menispermites Wardianus HoUick. 

 ' Plate XVIII, Fig. 3. 



Menispermites Wardianus Hollick, in Newb., Fl. Amboy Clays, 

 85, />/. ^9, /. p, II, 1896. 



Description. — Leaves ovate in outline, unsymmetrical, with an 

 acute apex and a cuneate base, 8 cm. to 9 cm. 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 vein of lesser 

 calibre diverges at the same point and approximately parallels the 

 more convex of the two margins. Tertiary venation obsolete. 



These leaves were referred to Mcnisperniitcs by their describer 

 because of their unsymmetrical outline in accordance w-ith Prof. 



