200 THE RARITAN FLORA. 



variability. They are all coriaceous, trilobate leaves of consider- 

 able size with long and stout petioles. Length 6 cm. to lo cm. 

 Width 7 cm to 12 cm. Lobes ovate, pointed or rounded,^ with 

 open rounded sinuses, the lateral lobes showing- a tendency to 

 become sublobate below. Primaries slender, camptodrome. 

 Lesquereux makes ''five nerved from the top of the petiole," a 

 character of this species as it is in all the specimens which he 

 figures and in one or two of Heer's figures. These extra laterals 

 are much more slender than are the regular primaries and are not 

 constant unless the species be considered composite. 



The Coastal Plain leaves referred to this species by Newberry, 

 Hollick and the writer are as a rule somewhat smaller in size, 

 with narrower lobes. This species is infrequent in the Raritan, 

 and the leaves referred to it are suggestive of what Newberry 

 called Aralia patens. The species is more abundant in the some- 

 what later Cretaceous deposits of Marthas Vineyard and Cliff- 

 wood bluff. It was described originally from the Atane beds of 

 Greenland and is also present in considerable abundance in the 

 Dakota. Group of Kansas. 



Occurrence. — Woodbridge. 



Collections. — ^N. Y. Botanical Gardens. 



Araua rotundiloba Newb. 



Aralia rotiindiloha Newb., Fl. Amboy Clays, 118, pi. 28, f. 5; 

 pi. s6, f. 9, 1896. 



Description. — Leaves elliptical in outline, palmately five-lobed, 

 about 8 cm. in length, by 10 cm. in greatest breadth. Lobes all 

 stout and rounded or slightly retuse distad, separated by shal- 

 low, rounded, open sinuses. Margins entire. Base truncate. 

 Petiole long and very stout. Primaries comparatively slender, 

 3 in number, with a pair of subordinate laterals usually pres- 

 ent. Secondaries slender, camptodrome. 



As this species is based upon infrequent specimens it may 

 possibly represent a variety oi Aralia Newherryi, some forms 



^ Retuse in one specimen which Lesquereux refers to this species. 



