MARYLAND GEOLOGICAL SURVEY 819 



Ficus daphnogenoides Berry, 1906, Ibidem, vol. xxxiii, p. 173, pi. vii, fig. 5. 

 Ficus daphnogenoides Berry, 1907, Ibidem, vol. xxxiv, p. 194, pi. xi, figs. 



10, 11. 

 Proteoides daphnogenoides Hollick, 1907, Mon. U. S. Geol. Survey, vol. 1, 



p. 59, pi. xii, figs. 1-5. 

 Ficus daphnogenoides Berry, 1911, Bull. 3, Geol. Survey of New Jersey, p. 



122, pi. xii, fig. 4. 

 Ficus daphnogenoides Berry, 1912, Bull. Torrey Bot. Club, vol. xxxix, p. 



394. 



Description. " Les feuilles sont coriaces, a la base attenuees, entieres ; 

 la nervure mediane est forte ; elle porte deux nervures secondaries f aibles, 

 aerodromes, qui sont presque paralleles au limbe; mais elles ne sont pas 

 opposees, comme chez les Daphnagene et Cinnamormim." Heer, 1866. 



This species was described by Heer from the Dakota group of Nebraska, 

 and was based upon very incomplete material. His specimens have some 

 long ascending secondaries, but Lesquereux's more complete specimens 

 from the same horizon and region show that these secondaries were not 

 aerodrome but camptodrome. The species in this feature, and also in 

 other respects, differs from Protect, and its allies which are more coriaceous, 

 with the secondaries branching at acute angles and massed toward the 

 often apetiolate base. On comparison with the genus Ficus it is found to 

 closely resemble a number of different species from such widely separated 

 localities as Central and South America and the Celebes. Especially 

 among the Mexican and Central American forms are very similar leaves 

 seen, e. g., Ficus fasciculata Watson, Ficus lancifolia Hooker and Arnott, 

 Ficus ligustrina Kunth and Bouche, and Ficus sapida Miquel, especially 

 the latter, which has much the same outline and consistency, the same 

 prominent midrib, and the same venation. Placed in the genus Ficus, 

 where these fossil forms properly belong, they find their affinity in the 

 group which includes, among others, such species as Ficus elongata 

 Hosius, Ficus bertlioudi Lesquereux, Ficus suspecta Velenovsky, Ficus 

 krausiana Heer, etc. 



This species has been found to be quite variable in size, ranging in length 

 from 11 cm. to 22 cm. and in width from 1.9 cm. to 3.7 cm. It is usually 

 widest in the lower half of the leaf, although sometimes the base is quite 

 narrow and the widest part is toward the middle. In all unequivocal 



