(modifié de Coste, Flore de la France 1937) :
Glandes entières, à capsules couvertes de tubercules, bractées libres
Plante vivace de 20-50 cm, glabre ou poilue, à souche horizontale, noueuse-continue, charnue, plus épaisse que les tiges dressées, cylindriques, presque simples, écailleuses à la base .[rhizomes avec tuberisation +/- marquée, tubers de 106 cm; zones sans tubers, si present, 2-4 mm diam[]
Écologie : Bois, lieux frais, [dans toute la France.[calcaire et schiste]
Répartition hors de France : Europe centrale, jusque dans la Russie australe.
(modified from Butcher, British Flora 1961):
NOTE: the French text is more complete and up-to-date
Glands entire; warty capsule; bracts separated
A green perennial with many stems15-45 cm high, growing erect from a far-creeping rhizome.
Ecology UK: (distribution according to flora) An introduced plant, naturalized in several hedgerows and shady places, especially in Wales and Scotland.
France:
Distribution outside France: ?
Fleurs : ombelle verte à 5 rayons grêles ; bractées ovales-triangulaires; glandes souvent pourpres, entières;
Floraison France : Mai-juillet
Flowers: bracts broadly ovate, free at base. Inflorescence of about 6 rays and several others below, twice forked, two to three times as long as subtending leaves; flower 3 mm diam., green; involucral glands obovate, entire, becoming reddish.
Flowering UK: Mid May-early July