332 



GENTIANE^ 



6. G. catnpestris (Field Gentian). — Resembling G. Amarella in 

 habit, but distinguished by its 4-cleft calyx of which the two outer 

 lobes are much larger than the inner two, and by the pale lilac 

 4-cleft, salver-shaped corolla. — Dry pastures ; common. — Fl. July 

 — October. Annual. 



7. G. bdltica (Baltic Gentian), with a corolla-tube shorter than 



mknyAnthes trifoliata (Bztci-ieati, Marsh Tre/oify. 



the calyx, which resembles that of G. catnpestris, occurs on downs 

 in Norfolk, Suffolk, Devon, Cornwall, and North Wales. — Fl. 

 August — October. Annual. 



6. Menyanthes (Buck-bean, Bog-bean, Marsh Trefoil), repre- 

 sented by the one species M. trifolidta, is the only British plant 

 in the Order with divided leaves. The stem scarcely rises above 



