Polemonium 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 : 74

1. Polemonium L. 1

Usually perennial. Leaves pinnate. Flowers in terminal corymbose inflorescences. Corolla blue, campanulate or with a rotate limb; stamens exserted, all inserted at the same height on the corolla, the downward-curved, hairy bases of the filaments almost closing its throat. Capsule subglobose; seeds 4-14 in each loculus.

1 Stem with 1(—2) leaves 3. boreale 1 Stem with several leaves

2 Corolla-lobes ciliate 2. acutiflorum 2 Corolla-lobes not or sparsely ciliate 1. caeruleum