Coastal manroot Coastal manroot

Sicyos oreganus Torrey & A. Gray, Fl. N. Amer. 1: 542. 1840; Echinocystis oregana (Torrey & A. Gray) Cogniaux; Megarrhiza oregana (Torrey & A. Gray) S. Watson

Leaf blades usually shallowly, sometimes deeply 5–7-lobed, 8–20(–35) cm wide. Flowers: sepals (pistillate) deltate to subulate or filiform, 1 mm; petals 8–10 mm (pistillate) or 5–6 mm (staminate), corolla usually white to cream, rarely greenish, cupulate to cupulate-rotate; staminodia present in pistillate flowers. Capsules usually striped dark green at maturity, short-ellipsoid to ovoid, tapered to beak, 4–6.5(–8) cm, surface sparsely to moderately echinate (usually smooth distally), spinules weak, flexible, 3–6 mm. Seeds 3–6, orbiculate to elliptic, compressed, 16–22 mm. 2n = 32.

Flowering (Feb–)Mar–Jun. Roadsides, disturbed areas, clearings, fields, dunes, open hillsides, stream sides, meadows, thickets, Douglas fir and redwood forests; 0–800(–2000) m; B.C.; Calif., Oreg., Wash.