Grassland, riverbanks, roadsides, rocks, sand dunes, sea cliffs, seaside, wasteland, waterside, woodland.
An annual or biennial plant, similar to Prickly Lettuce (Lactuca serriola) but taller. The greyish-green leaves are larger, wavy-edged and often flushed purple. The leaves have spines on their edges and along the midrib on the undersides. The base of the leaves are wrapped around their stems. The stems are covered in spines which can be green, red or purple.
Bitter Lettuce, Opium Lettuce, Poisonous Lettuce, Tall Lettuce, Wild Lettuce, Wild Opium Lettuce.