i62 THIE RARITAN FLORA. 



This is possibly only an extraordinary large leaflet of Caesal- 

 pinia Cookiana Hollick, somewhat more elongated in outline and 

 strictly congeneric with that species. It is, unfortunately, based 

 upon the single imperfect specimen figured. 



Occurrence. — South Amboy. 



Collections. — U. S. National Museum. 



Genus BAUHINIA Linne. 



(Sp. PI., 1753. P- 374-) 



Bauhinia cretacea Newb. 



Plate XIX, Fig. 3. 



Bauhinia cretacea Newb., Bull. Torrey Club, vol. 13: yy, pi. ^6, 

 1896; Fl. Amboy Clays, 91, pi. 4^, f. 1-4; pi. 44, f. z-j, 

 1896. 



Description. — This handsome species is common at the Wood- 

 bridge horizon and is characterized by Professor Newberry as 

 follows: "Leaves large, from 10 cm. to 18 cm. in diameter, gen- 

 eral outline circular, deeply two-lobed, sinus reaching below the 

 middle, margin entire, base rounded, lobes oblong or broadly 

 spatulate; nervation strong, radiate or bilateral, midrib slender, 

 from I cm. to 4 cm. in length, running to bottom of medial 

 sinus, there forking equally, each slender branch running parallel 

 with the margin of the sinus ; lateral nerves strong, usually two, 

 rarely one on each side, springing from a common base, the 

 interior lateral nerve strongest, forking several times and giving 

 off fine branches, which inosculate to form a graceful festoon 

 near the upper margin ; the exterior lateral nen^es throwing off 

 numerous branches which anastomose in loops near the margin, 

 producing a camptodrome nervation. In those which have but 

 a single lateral nerve the lobes are narrower, and each is covered 

 with the ramifications of the branches, which spring chiefly from 

 the outer side of the single main nerve." 



"The form and nervation of these leaves are so precisely those 

 of some of the Bauhinias of the present flora that there can be 



