Lavandula angustifolia subsp. angustifolia

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 : 188

(a) Subsp. angustifolia

( L. officinalis Chaix , L. vera DC. ):

Bracts usually shorter than calyx; calyx 4-5-6 mm, the appendage on the upper tooth obscure. Throughout the range o f the species.