212 THE RARITAN FLORA. 



and Patoot horizons in Greenland ; from various localities within 

 the Dakota Group, including the Woodbine formation of Texas; 

 and with the exception of the fragments from Marthas Vineyard 

 and Long Island, which are of questionable identity, it is com- 

 mon in either the Raritan or Magothy or homotaxial formations 

 from New Jersey to Alabama. 



Its most marked character is the prominence of its tertiary 

 areolation. It is abundant in the Raritan, occurring both in the 

 older and younger beds, and is one of the species which points 

 very strongly to the Cenomanian age of these deposits. 



Occurrence. — South Amboy, Milltown. 



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



DiosPYROS AMBOYENSis Berry. 



Phyllites ellipticus Newb., Fl. Amboy Clays, 130, pi. 24, f. p, 



1896. 

 Diospyros amboyensis Berry, Bull. Torrey Club, vol. 36: 262, 



1909. 



Description. — Leaves elliptical in outline, large, 8 cm. long by 

 4.6 cm. broad ; margin undulate ; apex rounded, almost retuse ; 

 base broadly rounded, thus differing from the wedge-shaped base 

 of Diospyros primceva; midrib strong, although not so strong as 

 in the latter species; secondaries numerous. 8-10 pairs, regular, 

 leaving the midrib at an angle of about 45^, camptodrome; ter- 

 tiaiy venation of large polygonal meshes, finer in calibre than in 

 Diospyros primava. 



Unfortunately no specimens other than Newberry's original 

 type have been found, and it is possible that it was an aberrant 

 leaf of the common Diospyros primceva, some undoubted leaves 

 of which suggest it in their sum oi characters. One of the leaves 

 which Heer identifies from the Atane schists of Greenland as 

 Populus hyperhorea,^ while the apex is partially destroyed and 

 the tertiaries are not shown, is very similar to the species under 



^ Heer, Fl. Foss. Arct., vol. 3, ab. 2 ; pi. 2g, f. 6, 18. 



