THE INFLORESCENCE 



69 



borne on internodes have sometimes been called intercalary, sometimes 

 adventitious, because believed developed from adventitious buds. 

 Though some adventitious inflorescences may be truly so, the mor- 

 phological position of the clusters is commonly misinterpreted. The 



Fig. 29. Photograph of part of an inflorescence of Xanthorrhoea hastilis, a condensed 

 cymose panicle, with branches spirally arranged. Left, young stage, with only the 

 first median flower of each cyme open; right, later stage, with secondary flowers also 

 mature. 



pseudolateral position may be the result of sympodial growth, as in 

 Asclepias, or of adnation of the peduncle to the internode. In cauliflonj, 

 where inflorescences develop on older branches or tree trunks, various 

 relations of the flower cluster to the mother stem may be present. Long- 



