380 BENNETTITAIiES i^^' 



seem, however, that in most cases the flowers were bisexual^ 

 (fig. 513). A remarkable feature is the enormotis number of 

 flowers on a single stem; in Cycadeoidea Dartoni^, 54 cm. 

 long and 35 cm. broad, 500 — 600 flowers were coimted on one 



Tio. 513. Cycadeoidea. Restoration of an unexpanded bisporangiate strobilus 

 with some of the hairy bracts removed. Compare Cycadeoidea dacotensis, 

 figs. 529, 530. (After Wieland; ca nat. size.) 



side. On the other hand the large stem of C. gigantea (fig. 536) 

 shows no flowers. All the flowers on a single trunk are approxi- 

 mately in the same stage of development : it would seem, as 



1 The flowers are frequently described as protandrous but, as Dr Scott pointed 

 out to me, we have no definite evidence on this point. 



2 Wieland (ll^) p. 134; Coulter and Chamberlain (10) p. 67, fig. 55. 



