*Euphorbia lathyrus L.

Stem leaf margins entire. Leaves up to 16 cm long, oblong-lanceolate, sessile, decussate. Umbels with 2–5 rays; floral leaves large, ovate-lanceolate. Involucral glands with short blunt horns. Stout, glaucous biennial. Widespread. Weed. Introd. from Europe and Asia. Fl. summer. Caper Spurge