Mr. J. Morris on recent and fossil Cycadecp. 113 



Zamia. — Pinnae ovate, lanceolate, attenuate, entire or dentate, ha- 

 ving numerous fine equal veins parallel or slightly divero-ent, 

 simple or sometimes forked. Pinnae contracted towards the 

 base, and articulated to the rachis by a whitish callosity. 



Encephalartos . — Pinnae varying in form, opposite or alternate, ha- 

 ving simple or forked veins (thicker than in Zamia), and fre- 

 quently terminating in spines or serrations towards the apex, 

 attached bv their whole base to the rachis. 



The genera of this family differ in their geographical distri- 

 bution. The five species of Cycas, viz. C. circinalu, revoluta, 

 Ann. &; May. N. Hist. Vol. vii. I 



