Kalmia angustifolia, L.

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 : 10

1. K. angustifolia L. , Sp.P l. 391 (1753) .

Stems up to 150 cm but often much less, erect or ascending; young twigs terete, glabrous. Leaves 20-60 x 8-18 mm, opposite or in whorls of 3, elliptical to oblong, petiolate, entire, sparsely puberulent, ferruginous beneath when young; margin flat or slightly revolute. Corymbs axillary, on upper part of previous year’s growth; pedicels glandular-puberulent. Sepals herbaceous, acute; corolla 7-12 mm in diameter, bright reddish-pink. Cultivated fo r ornament and naturalized in Germany and N.W. England. [Br Ge.] (E. North America.)