JT4 



CORDAITEAE. 



FIG. g. Female flowers of Cordaiteae, after Renault '. A tangential section of the inflorescence of Cordaianthiis 

 Williamson!, Ren. B transverse section of the flowering shoot of Cordaianthus Zeilleri, Ren. C median longitudinal 

 section of the ovule of Cordaianthus Grand' Euryi, Ren., with a portion of the integument and nucellus, in which there 

 is nothing to be seen as yet of the embryo-sac ; beneath the beak-like process is the pollen-chamber, and in the 

 chamber, and in the tube which passes through the beak and gives access to the chamber, are a few pollen-grains. 

 D the beak-like process of the nucellus of the preceding figure more highly magnified ; wedged in it are the large 

 pollen-grains with shagreened exinium and internal cell-formation. 



1 Renault (1). 



