The Probert Encyclopaedia of Nature

CALLUNA

Calluna is a genus of the family Ericaceae of which one species,
Calluna vulgaris (ling or common heather) occurs wild in Britain. The genus is marked from its allies by its rosy calyx, the four sepals of which are much longer than the bell-shaped corolla within. Outside the calyx are four green bracts. The tiny downy leaves imbricate in four rows.
Research Calluna