CYCADOXYLEAE 493 



also contain both leaves and fructifications which may 

 be of a Cycadean character. The leaves are referred to 

 the genera Pteropliyllum and 

 Sphenozamites} the' former re- 

 calling the foliage of the recent 

 Dioon, and the latter that of 

 some species of Zamia. The 

 agreement, in form and vena- 

 tion, with typical Cycadean 

 leaves, is sufficiently close to 

 render it probable that the 

 affinities of these fossils were 

 with the Cycadophyta. 



The fructification referred 

 to — Cycadospadix miller yensis, 

 Ren. 2 — is a very remarkable 

 one, represented in Fig. 180. 

 The axis bears numerous fim- 

 briated sporophylls it), concave 

 on their lower surface, and on 

 the under side of each sporo- 

 phyll two seeds {/) were borne. 

 M. Renault, the discoverer, 

 states that the sporophylls are 

 spirally arranged, and regards 

 the whole structure as consti- 

 tuting a lax cone. Some of 

 the specimens are inserted, 

 almost at right angles, on a branch little thicker than 

 the axis of the cone itself. Such an arrangement 

 is not found among true Cycads, but the com- 



1 See Renault, Flore fossile cfAuluii el d ' Epiuac, Part ii. - Loc. til. 



— Cycadospadix millcrycu- 

 sis. Fructification, consisting of 

 an axis, bearing numerous iacini- 

 ate sporophylls (/), each of which 

 bears seeds (s) (probably two to 

 each sporophyll) on its lower sur- 

 face. Slightly reduced. After 

 Renault. 



