Fremontia mexicana (Davidson) J. F. Macbride

Plants erect, 15–60 dm. Leaf blades 15–100 × 10–70 mm, base notably cordate. Pedicels 5–15 mm. Flowers 45–85 mm diam. (pressed); sepals usually orange, lobes sometimes reddish at bases and along veins, gland/pit borders rarely setose. Seeds rarely carunculate, usually glabrous.

Flowering Mar–Jul. Canyon slopes, chaparral; of conservation concern; 100–700 m; Calif.; Mexico (Baja California).

Fremontodendron mexicanum is in the Center for Plant Conservation’s National Collection of Endangered Plants.