Calluna Salisb.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1972, Flora Europaea. Volume 3. Diapensiacea to Myoporaceae, Cambridge: Cambridge University Press : 8

3. Calluna Salisb. 1

Small evergreen shrubs; leaves opposite, sessile. Flowers 4- merous, in terminal or intercalary racemes or panicles; pedicels with several bracteoles. Sepals free, petaloid, exceeding the corolla; corolla deeply lobed, persistent in fruit; stamens 8; anthers acuminate, with basal appendages, opening by slits along their whole length, not by pores. Fruit a septifragal capsule.