Photo: Populus tremula 07.

Seedpods, among the shiny young brown leaves. Tapanila, Helsinki, Finland. Wild. 2008-05-13.

Populus tremula L.
Engl.: aspen, European aspen, quaking aspen.
Deu.: Zitter-Pappel, Espe.
Suom.: haapa, metsähaapa.
Sven.: asp, hängasp.
Fran.: peuplier tremble