Filipendula Miller

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1981, Flora Europaea. Volume 2. Rosaceae to Umbelliferae, Cambridge University Press : 6

6. Filipendula Miller 1

Perennial, rhizomatous herbs. Leaves pinnate, usually with small leaflets between the larger ones. Inflorescence a cymose panicle. Flowers usually 5- or 6-merous; hypanthium flat or slightly concave; petals pale cream, sometimes purplish beneath; stamens 20-40; carpels 6-12, in one whorl. Fruit a head of achenes.

Basal leaves with at least 8 pairs of large leaflets; leaflets not more than 2 cm; petals 5-9 mm 1. vulgaris

Basal leaves with not more than 5 pairs of large leaflets; leaflets 2 cm or more; petals 2-5 mm 2. ulmaria