Ledum palustre subsp. palustre

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 : 9

(a) Subsp. palustre

(inch L. decumbens sensu N. Busch , vix (Aiton) Loddiges ex Steudel):

Leaves narrowly oblong to linear, 4-12 times as long as wide; midrib usually visible from beneath; stamens (7—)10(—11). 2« = c. 52. Throughout the range o f the species.