SEED-BEARING PLANTS 
393 
curled (Fig. 286), while in the related American genus, 
Zamia, the entire leaf is curled as well. The plants are 
dioecious, but the two sexes so closely resemble each other 
that they cannot be distinguished except by their sporo- 
phylls when in fruit. 
FIG. 289. Macrozamia Moorei, showing two lateral carpellate cones. 
352. Microsporophylls. The microsporophylls are 
grouped into a cone (Fig. 287). This means that they 
are not on the main stem, for the cone is really a branch, 
bearing only sporophylls. The microsporangia, bearing 
microspores, occur in groups (sori), on the under surface 
of the sporophylls (Fig. 288). 
