i68 .THE RARITAN FLORA. 



The Milltown leaf, of which two specimens have been found, 

 is more suggestive of Phaseolites elegans in general appearance 

 than it is of the species with which it is identified. This is due 

 to its more slender apical portion. On the other hand, it shows 

 the very full convex base on one side, and the more acutely 

 branching secondaries which are considered specific characters of 

 Phaseolites manhassettensis. 



Occurrence. — Milltown. 



Collections. — U. S. National Museum. 



Genus PRUNUS Linne. 



(Sp. PL, 1753, p. 473.) 



pRUNUS ? ACUTiFOLiA Nevvb. 

 Plate XXII, Fig. i. 



Prunus ? acutifolia Newb., Fl. x\mboy Clays, 90, pi. 14, f. i, 

 1896. 



Description. — Leaves ovate in outline, about 4.5 cm. in length 

 by 2.5 cm. in breadth. Apex acute. Base rounded or slightly 

 cuneate. Margins regularly and finely serrate except for a few 

 millimeters at the base. Secondaries indistinct, evidently numer- 

 ous and parallel, branching from the midrib at an acute angle, 

 about 45°. 



This species was based upon a single imperfect specimen from 

 Woodbridge. An additional specimen, lacking the tip, and two 

 other fragments were subsequently collected at South Amboy. 

 A very similar leaf from Gay Head, Marthas Vineyard, is de- 

 scribed by Hollick^ as an Amelanchier, and Lesquereux describes 

 leaves and fruit from the Dakota Group as a species of Prunus 

 of the Amygdalus section. 



Occurrence. — Woodbridge, South x\mboy. 



Collections. — U. S. National Museum, N. Y. Botanical Garden. 



' Hollick, Mon. U. S. Geol. Surv., vol. L, 1907, p. 83, pi. 32, f. i. 



