(modifié de Coste, Flore de la France 1937) :
Arbrisseau de 2-5 mètres, à jeunes rameaux effilés, cannelé au sommet, glabres
Écologie : (répartition d'après la flore) Lieux humides, dans presque toute la France.
Répartition hors de France : Europe; Asie occidentale et boréale; Algérie.
(modified from Butcher, British Flora 1961):
NOTE: the French text is more complete and up-to-date
A large shrub or small tree up to 10 m. high, Twigs glabrous, rather brittle.
Ecology UK: (distribution according to flora) found rather infrequently in wet places and streamsides throughout lowland Britain, though it is usually planted.
France:
Distribution outside France: ?
Fleurs : ;chatons contemporains, grêles, cylindriques, pédonculés et feuillés à la base, les mâles plus lâches, à écailles persistantes, jaunes, glabrescentes au sommet; 3 étamines libres, à anthères jaunes; style court;
Floraison France : Avril-mai.
Flowers: Catkins coeval with the leaves, 25-30 mm long, rather slender, on short, leafy stalks; scales yellowish, glabrous, or hairy at base or ciliate, ovate. Stamens 3, filaments pilose just at base; nectary double, quadrate. Ovary glabrous, stalked, conical; stigmas sessile, thick, deeply divided
Flowering UK: Late April-mid May
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