(modifié de Coste, Flore de la France 1937) :
Plante annuelle ou bisanuelle, pubescente, d'un vert grisâtre ; tiges de 20-50 cm, dressées, rarement étalées, simples ou rameuses dans le haut
Écologie : Champs, bords des chemins, terres incultes, dans toute la France et en Corse.
Répartition hors de France : Presque toute l'Europe ; Asie occidentale.
(modified from Butcher, British Flora 1961):
NOTE: the French text is more complete and up-to-date
A more or Iess hairy annual or biennial with usually a single, erect, leafy stem 25-30 cm high, branched only in the upper part.
Ecology UK: (distribution according to flora) found, sometimes abundantly, in cornfields and waste places northwards to central Scotland though it is rare in Scotland and Ireland.
France:
Distribution outside France: Almost all of Europe, Western Asia
Fleurs : blanchâtres, petites ; grappe fructifère dense, à pédicelles étalés, velus, égalant les silicules [anthères jaunâtres]
Floraison France : Mai-juillet
Flowers: 3-4 mm diam., in elongate racemes; sepals lanceolate; petals spathulate, white, entire, rather longer than sepals; stamens six.
Flowering UK: Late May-early Sept.