﻿Fig. 101. — Dion edule. — Low-growing columnar and heavily armored type of cycadean trunk with markedly villose 

 leaf bases and scale leaves and several adventitious basal fronds. Staminate plant bearing a single terminal 

 cone 9 cm. in diameter. The great reduction of the sporophylls leaves it physiologically impossible for the 

 conical axis to serve as an integral extension of the stem after the maturity of spores as in ovulate forms of 

 Cycas, limited growth of the axes of fructification being correlated with sporophyll reduction. 



