268 



CORDAITEAE 



[CH. 



PIG. 481. A, B, Cordaianthus Grand'Euryi, ovule showing apex of nucellus, B, 

 with microspores, p; pc, pollen -chamber; b, beak of nuoellus; v, vascular 

 bundle. C, transverse section of flower-bud with ovules, a, b. D, Cordaianthus 

 Williamsoni, longitudinal section; a c ovules; s, spaces; n, nucellus. 

 E, Cordaianthus Zeilleri, transverse section showing four large ovules and one 

 aborted ovule (a); v, vascular bundle. F, transverse section of male flower; 

 m, microsporangia. (From photographs supplied by Prof. Bertrand.) 



