156 THE RARITAN FLORA. 



Description. — Leaflets large, 7.5 cm. by 5.1 cm,., almost a per- 

 fect ellipse in outline, slightly emarginate at the apex; midrib 

 thin and straight ; secondaries numerous, nearly straight, ascend- 

 ing at an angle of about 45°, camptodrome, of delicate calibre 

 and scarcely discernable. 



This species is based upon a single individual and seems 

 property referable to this genus. In outline it suggests some of 

 the foiTns which have been referred tO' Populus, but its venation 

 is quite different. It also resembles some of the specimens re- 

 ferred to- Ijiriodendropsis, which is simply another way of 

 emphasizing the fact that it is a leguminous leaflet of unknown 

 generic affinities. 



Occurrence. — South Amboy. 



Collections. — U. S. National Museum. 



Genus COLUTEA Linne. 



(Sp. PI., 1753. P- 723.) 



CoLUTEA PRiMORDiALis Heer. 



Plate XX, Fig. 4. 



Colutea primordiaHs Heer, Fl. Foss. Arct., vol. 6, ab. 2 : 99, pi. 21, 

 f. 7-11; pi. 43, f. 78, 1882. 

 Lesq., Fl. Dakota Group, 148, pi. 13, f. 8, p, 1892. 

 Hollick, Bull. Torrey Club, vol. 21 : 56, pi. 174, f. 2, 1894; 

 U. S.. Geol. Surv., Mon. 50: 84, pi. 32, f. 14, ij, 1907. 

 Newb., Fl. Amboy Clays, 97, pi. ip, f. 4, 5, 1896. 

 Description. — '"C. foliolis membranaceis, breviter petiolatis, 

 pollicaribus, ovalibus, integerrimis, basi attenuatis, apice profunde 

 emarginatis; nervis secundariis subtilissimis, camptodromis." 

 Heer 1882. 



Newberry's specimens from Woodbridge, if they are referable 



to this species at all, are abnormal or possibly incomplete since the 



base is much unlike the usual leaves of this species. A typical 



specimen, however, has been found at South Amboy (Allen pit). 



Occurrence. — Woodbridge, South Amboy. 



Collections. — N. Y. Botanical Garden. 



