332 



GENTIANE/E 



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

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

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

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

 —October. Annual. 



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



menyAnthes trifoliAta (Buck-dean, Marsh Trefoil). 



the calyx., which resembles that of G. campestris., 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 



