Eschscholzia californica

Erect to spreading, glaucous, glabrous annual, to c. 60 cm high. Leaves ± densely rosetted at base; lamina ovate to oblong in outline, 2–10 cm long and wide, ultimate segments linear, 0.5–2 mm wide. Peduncles mostly 8–20 cm long; buds erect; receptacle with a ± prominent rim spreading for 0.5–2 mm beyond the base of the calyptra; calyptra 12–33 mm long, attenuate; petals obovate to broadly cuneate, 1–6 cm long, yellow to orange, often darker near base, soon falling. Capsule 5–10 cm long, 2–3 mm wide; seeds c. 2 mm diam., surface punctate, with an underlying network of low narrow ridges. Flowers Sep.–Jan.