Adonis microcarpa

Erect glabrous annual to c. 50 cm high; leaves petiolate below, subsessile above, broadly obovate in outline, to 6 cm long, 4 cm wide, bi- or tripinnate with ultimate segments linear, to c. 4 mm long, 1 mm wide. Flowers solitary, terminal at the ends of branches, on an elongated peduncle c. 1–5 cm long; sepals purplish, 5–12 mm long, spreading to reflexed; petals (5–)6–8(–10), suberect to widely spreading, red or yellow with a black basal blotch, obovate, 7–12 mm long; stamens numerous, c. 5 mm long, anthers dark purple, c. 1 mm long; carpels 10–50. Achenes plump, obovoid to c. triangular in outline, c. 3 mm long, with lateral reticulate ridges, and an ascending terminal beak c. 1 mm long; receptacle elongating as achenes mature, finally to c. 2 cm long. Flowers Sep.–Oct.