256 



ACANTHACE^. 



[chap. 



bracteate spikes of bilabiate white flowers, spotted with red 

 or purple, in the axils of herbaceous bracts. 



Fig. 151. Flower of Justicia Adhatoda. 



Observe the two-celled, undivided ovary, by which the 

 Family may be distinguished from Labiates, which it re- 

 sembles in its opposite leaves and often bilabiate flowers : 

 the capsule, dehiscing by two valves, each valve bearing the 

 seeds upon its median line, supported upon hard, hooked 

 processes. 



Sub-type — Thunhcrgia gra/idijiora, a climbing, woody 

 perennial, with axillary, peduncled, large blue and white, 

 bibracteate flowers. 



