A bright lemon-yellow poppy with four tissue-thin petals. The leaves are a light yellow-green and pinnately divided into five toothed lobes. It has long, ribbed seed capsules that split when ripe, releasing many tiny seeds.
It flowers June to August. and is found in damp, semi-shaded positions, such as rocky places, old walls, and upland woods. Native to Wales, south-west England and Ireland. Naturalised as a garden escape elsewhere.
Welsh (Poppy Meconopsis cambrica), local woodland path, Staffordshire, June 2012.