xxxvi] 



OYCADEOIDEA 



381 



Wieland points out, that after a vegetative period of some con- 

 siderable duration the plant produced a large crop of flowers, and 

 it is conceivable that as in Ooryfha and some other recent Flowering 



Fig. 514. Ovulate strobilus of Cycadeoidea. Longitudinal section showing the pith, 

 m, stele, x, p, and cortex, c, of the stem, the ovulate strobilus with bracts, 

 5, seeds, s, etc., enclosed by fohage-leaves, I; a, insertion of leaves on the 

 stem; d, insertion of disc of microsporophyUs. (After Wieland.) 



plants this supreme effort set a limit to the plant's existence. 

 In the development of flowers from the old stem Cycadeoidea 

 affords a striking example of cauliflory. 



