CYCADALES 



107 



102). Usually they end before they reach the nucellus, but sometimes 

 extend beyond the free portion of the nucellus into the inner fleshy 

 layer of the integument. 



The outer fleshy layer remains fleshy and, in the ripe seed, be- 

 comes variously colored, bright red in Encephalartos altensteinii, 



Fig. 99. — Zamia floridana: a very compact cone, with megasporophylls so regularly 

 arranged that they appear to be in vertical rows. 



pale yellowish in Encephalartos horridus, orange-red in Zamia flori- 

 dana, blood red in Zamia latifoliolata, salmon pink in Microcycas, 

 and nearly white in Dioon and Ceratozamia. The color seems to be 

 constant for any given species. 



