Medium slightly hairy, loosely tufted plant, with yellow latex from broken stems. Flowers yellow, rarely orange 4 to 8 cm solitary on long stalks. Capsule elliptical with a short style at the apex.

Moist shaded habitats, old walls, rocky places, hedgerows and woodland.

June to August.

Perennial.

Mainly found in Wales and south-western England, but naturalised elsewhere in Britain.

Occasional in Leicestershire and Rutland and probably naturalised in this area from escaped garden stock. The Flora of Leicestershire published in 1988 states that it occurred in 13 of the 617 tetrads.