American bittersweet American bittersweet

Vines to 15 m. Leaves: blade oblong, 5–10 × 2–4 cm, aestivation involute. Inflorescences terminal, panicles, 3–8 cm. Staminate flowers: pollen yellow. Capsules orange, subglobose, 4–8 × 5–9 mm, glabrous. Seeds dark brown, 6 mm. 2n = 46.

Flowering spring–summer. Thickets, woodland margins, roadsides, usually rich soils; 0–1400 m; Man., Ont., Que., Sask.; Ala., Ark., Conn., Del., D.C., Ga., Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Mont., Nebr., N.H., N.J., N.Y., N.C., N.Dak., Ohio, Okla., Pa., R.I., S.C., S.Dak., Tenn., Tex., Vt., Va., W.Va., Wis., Wyo.