Dryopteridaceae.

Clinton's wood fern.

Fern native to the wet woodlands of the north-eastern USA and Canada. It is a fertile hybrid between D. goldiana and D. cristata. It is an elegant fern with bright green fronds, broadly triangular, pinnate-pinnatifid, semi-evergreen. Give it a moist and humusy soil in shade or light shade. Height : 70/100cm.  Hardiness : -25°C.