American ipecac, Indian physic

Spiraea stipulata Muhlenberg e\× Willdenow, Enum. Pl., 542. 1809; Porteranthus stipulatus (Muhlenberg e\× Willdenow) Britton

Leaves: stipules persistent, depressed-ovate, 10–20(–25) × 10–20 mm (foliaceous), margins serrate to doubly serrate; leaflet blade ovate-oblong, those of proximal leaves laciniately lobed or dissected, abaxial surface densely sessile- or stipitate-glandular, otherwise hirsute to hirsutulous or rarely glabrous, adaxial hirsutulous, eglandular or sparsely sessile-glandular. Hypanthia 4.5–5.5 mm. Petals 10–13 mm. Follicles long-beaked, slightly to prominently rugulose, glabrous or glabrate. 2n = 18.

Flowering (Apr–)May–Jul. Rich woods, post oak woodlands, moist places in 2d-growth pine hills, low woods, ravines, stream valleys, prairie thickets, dry, rocky slopes; 100–1000 m; Ala., Ark., Ga., Ill., Ind., Kans., Ky., La., Md., Mich., Miss., Mo., N.Y., N.C., Ohio, Okla., Pa., Tenn., Tex., Va., W.Va.