(modifié de Coste, Flore de la France 1937) :
Souche horizontale, allongée, charnue, cassante; hampe de 10-30 cm, grêle, légèrement pubescente;
Écologie : (répartition d'après la flore) Bois et prairies humides
Répartition hors de France : ,Presque toute l'Europe; Asie occidentale; Amérique boréale.
(modified from Butcher, British Flora 1961):
NOTE: the French text is more complete and up-to-date
Grows from underground root-like stems; foliage dies back down by mid summer (summer dormant). The rhizomes spread just below the soil surface, forming long spreading clumps that grow quickly, contributing to its rapid spread in woodland conditions, where they often carpet large areas.
Ecology UK: (distribution according to flora) Common in woodland
Distribution outside France: ?
Fleurs : blanches, roses ou purpurines, solitaires ; sépales 5-8, ovales, glabres;
Floraison France : Mars-mai.
* Plante très âcre.
Flowers: The plants start blooming soon after the foliage emerges from the ground. 2 centimetres diameter, with six or seven tepals with many stamens . In the wild the flowers are usually white but may be pinkish, lilac or blue, and often have a darker tint on the backs of the tepals.
Flowering UK: April, May