Rhodiola L.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1964, Flora Europaea - Volume 1. Lycopodiaceae to Platanaceae, Cambridge University Press : 363

11. Rhodiola L. 1

Dioecious perennials with a thick, fleshy rhizome, bearing persistent, broad-based scale-leaves and flowering stems with alternate leaves and flowers in terminal cymes. Flowers usually 4-merous; petals free; stamens 8; carpels 4. Follicles erect.

Leaves at least 5 mm wide, fìat 1. rosea Leaves less than 2 mm wide, terete 2. quadrifida