406 



PODOCARPrSTEAE 



[CH. 



of some of the species leads us to attribute a corresponding power 



of adaptation to the genus in respect of widely different climates 



With such a capacity for adaptation, migration of the genus would 

 be rendered easy over the globe.' The geological history of the 

 Podocarpineae is unfortunately very fragmentary but such data 

 as are available lend support to the view that there was ' a centre 

 of diffusion in the extreme north,' the present distribution of the 



A B C 



Fig. 792. Podocarpites eocaenica. 

 (A, after Heer; B, C, after Gardner; nat. size.) 



family being as in the case of the Araucarineae the result of 

 migration from other parts of the world where the plants are now 

 represented only in the floras of a bygone age. 



PODOCARPITES. Andrae. 

 Podocarpites eocaenica (Unger). 



This species, from Eocene beds in South Styria, was founded 

 by Unger^ on detached sub-falcate leaves 3 — 12 cm. long (fig. 

 792, A) with a short petiole or a more or less sessile lamina. 

 1 Unger (51) p. 158, PI. xxin. figs. 11—16. 



