874 SYSTEMATIC PALEONTOLOGY 



" The only leaf seen of this species is 7 cm. long, 8.5 cm. broad between 

 the points of the lobes, which are short and obtuse. The lower secondaries 

 are thick, forking at the apex and becoming effaced before reaching the 

 borders, being, however, apparently camptodrome like the branches of 

 the primaries." Lesquereux, 1892. 



The present material is fragmentary and not certainly determined as 

 this species, although it is apparently distinct from the allied Hedera 

 cecilensis Berry. 



Occurrence. MAGOTHY FORMATION. Deep Cut, Delaware. 



Collection. Maryland Geological Survey. 



HEDERA CECILENSIS Berry 

 Plate LXXVIII, Figs. 1, 2 



Hedera cecilensis Berry, 1910, Bull. Torrey Bot. Club, vol. xxxvii, p. 28, pi. 

 viii, fig. 2. 



Description. Leaves of medium size, orbicular in general outline with 

 a tendency toward trilobation, 6 cm. to 7 cm. in length by about 6 cm. in 

 greatest width. Margin entire, with shallow undulate lobes. Petiole and 

 midrib stout. Lateral primaries suprabasilar, not differentiated from the 

 secondaries in some specimens. Secondaries one pair below the lateral 

 primaries and one or two remote pairs above, forking dichotomously and 

 craspedodrome in habit. 



This species resembles in a general way several which Lesquereux 

 referred to the genus Cissites, as for example, Cissites harkerianus and 

 Cissites acuminatus. In appearance it suggests the somewhat larger 

 Dakota group leaf which Lesquereux christened Platanus cissoides. It is 

 closely related to Hedera cretacea Lesqureux, differing in the suprabasilar 

 primaries and in the details of the general outline. 



Hedera cecilensis is a very well marked species and is evidently allied 

 to Hedera, clearly differentiated, however, from any of the previously 

 described forms. The genus is rather prominent in Upper Cretaceous 

 floras, both in Europe and America, the present species and Hedera 

 cretacea Lesquereux resembling closely the existing species. The present 



