946 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



possible for the basal ovule in this genus, as Strasburger asserts, to 

 develop into a shoot. It might truly, as he also asserts to be the case 

 in H. Hoopesii A. Gray, arise adventitiously from the funicle of the 



A. 



Fig. 211. 



A. — Longitudinal section of disc of flower-head showing eggs of Phytoptua 



attached to bracteoles ( x 400). 



B. — Longitudinal section of an ovary of a slightly virescent disc-floret showing 



earliest stage of proliferation of axis of latter in form of an enclosed 

 rudimentary shoot. 

 C— Ditto. 



