72 



BRITISH EOCENE FLORA. 



Pines. He divides the formations into four horizons, the oldest of which is characterised 

 by, among others, P. palao-laricio, the second by P. hepios, and the third and fourth by 

 P. laricio. He gives no illustrations of the cones of the former species, but our seeds 



Fig. 29 



Fertile branchlet of Pinus austriaca; 29, one fourth natural size ; 30, natural size; 30a, leaves, natural size; 

 306, section of leaf, magnified 4 diain. (Prom the ' Gardener's Chronicle.') 



agree more closely with those figured than with any existing seed. The fossil that 

 appears most close to it is a cylindrical cone from Kumi in Eubcea, figured as Pinus 

 hampeana} The seeds and cone, as figured, differ in several respects, however, from 

 those of P. Plutonis, and from Unger's earlier description of the species. 



1 Unger, ' Foss. Flor. Kumi,' pi. ii, fig. 13. 



