CHAP. VII.] ANDROMEDE^. 115 



SUB-TRIBE II. ANDROMEDE-^. 



The plants in this sub-tribe differ decidedly 

 from those of the preceding division, in having 

 ten stamens, while all the genera of heaths 

 have only eight. The calyx is also five-cleft 

 instead of four; and the corolla, which falls 

 before the seeds are ripe, has a five-lobed 

 limb. The sub-tribe is divided into twenty 

 genera, more than half of which are perfectly 

 distinct. 



The genus Andromeda is distinguished by its 

 globose corolla which has a five-lobed limb ; 

 and its stamens which have their filaments 

 bearded, and their anthers short and two- 

 awned. Tig. 52 shows a stamen of 

 the wild rosemary (Andromeda poll- * m' 

 folia) with its bearded filament («), p « 



and its two-awned anther with its ^^^ ^^_ 

 pore-like openings {h). The cells stamen of 

 of the capsule open in the middle, ^^'''^o-^r^'^-^ 

 down the back, to discharge the seeds. Professor 

 Don has divided the genus Andromeda into six 

 genera ; some of which contain only one or two 

 species. Thus only Andromeda polifolia and A. 

 rosmarinifolia are left in the genus Andromeda ; 

 Cassandra contains only A. calyculata^ and A. 

 angustifolia ; and Zenobia, only the beautiful 



