126 THE RARITAN FLORA. 



ward the broadly rounded apex and tapering' downward to the 

 cuneate base. Midrib slender. Secondaries numerous, close, 

 fine, branching from the midrib at an acute angle which is very 

 narrow in the basal part of the leaf, nearly straight and com- 

 paratively long, apparently camptodrome. 



This species was based on the single specimen figured by its 

 author and no additional material has since come to light. It 

 seems to be generically identical with Persoonia Lesquereuxii 

 Knowlton, a much commoner form which is relatively shorter 

 and broader and of a less delicate texture and habit. Its relation 

 tO' the genus Persoonia is entirely problematical. 



Occurrence. — South Amboy. 



Collections. — N. Y. Botanical Garden. 



Persoonia Lesquereuxii Knowlton. 

 Plate XX, Fig. 6. 



Persoonia Lesquereuxii Knowlton in Lesq., Fl. Dakota Group, 

 89, pi. 20, f. 10-12, 1892. 

 Newb., Fl. Amboy Clays, yi, pi. 4.2, f. 16, 1896. 

 Berry, Bull. Torrey Club, vol. 33 : 173, 1906. 

 Andromeda latifolia Newb., Fl. Amboy Clays, 120 (pars.), pi. 

 33> f- 9> 1896 (non /. 6-8, 10). 



Description. — Leaves obovate in outline, with a broadly 

 rounded apex, sub-emarginate in one of the Dakota group 

 specimens, gradually narrowing to the decurrent base. Varying 

 from 1.7 cm. to 5 cm. in length by 1.2 cm. to 2.5 cm. in greatest 

 width, which is toward the apex. Petiole stout. Texture sub- 

 coriaceous. Secondaries sparse, 3 or 4 pairs, thin, alternate, 

 branching from the stout midrib at an acute angle, about 25°, 

 camptodrome. 



This species, which was described originally from the Dakota 

 group, of Kansas, is somewhat variable in appearance. Hollick 

 referred a small almost orbicular leaf from the New Jersey Rari- 

 tan to it, presumably on the basis of its resemblance to Knowl- 



