488 



LABIATE. 



BALLtfrA NIGRA (Black HoreTiound). 



liarly strong and offensive. Fl. July, September. Per- 

 ennial. 



9. LEONURUS (Motherwort). 



1. L Cardiaca (Common Motherwort). The only 

 British, species. Hedges and waste places, not common. 

 Distinguished from all other British plants of the Order 

 by its leaves, which are deeply cut into 5 or 3 narrow, 



