Large-flowered bellwort, uvulaire grandiflore

Rhizomes short, ca. 1 cm, bearing clustered, fleshy roots; stolons absent. Stems 1–several, 1-branched, rounded, 2–7.5 dm, glabrous, typically bearing 1 leaf below lowest branch. Leaf blades perfoliate, elliptic to ovate-oblong, 6–13.5 × 2–6.5 cm, white-pubescent (rarely glabrous) on abaxial veins, margins smooth, apex acute. Flowers 1–3(–4) per stem; peduncles 1–2.5 cm, bearing 1 perfoliate bract; tepals golden yellow, 25–50 × 3–10 mm, smooth adaxially, apex acuminate; stamens 10–25 mm; anthers (8–)12–15(–20) mm; connectives 0.3–0.7 mm; ovary sessile, obovoid; style 8–12 mm; stigma lobes 2–5 mm. Capsules obovoid to obpyramidal, 3-lobed, 1–1.5 × 1–2 cm, 2 truncate beaks per lobe, lobes rounded. Seeds 2.5–4.5 mm; arils membranous. 2n = 14.

Flowering spring--early summer. Rich moist woods, calcareous to neutral soils; 0--1100 m; Man., Ont., Que.; Ala., Ark., Conn., Ga., Ill., Ind., Iowa, Kans., Ky., Md., Mass., Mich., Minn., Miss., Mo., N.H., N.Y., N.C., N.Dak., Ohio, Okla., Pa., S.Dak., Tenn., Vt., Va., W.Va, Wis.