Flora of North America species comparison

1–50, rhizomatous or suckering and forming scattered colonies.

partly to fully unfolded;

petiole (5–)9.3–16.7(–24) mm;

blade elliptic or oblong to ovate or obovate, (20–)31–47(–62) × (12–)21–35(–45) cm, base rounded to cordate, each margin with (0 or)1–6(–13) teeth on proximal 1/2 and (0–)3–6(–9) teeth in distalmost cm, largest teeth more than 1 mm, apex broadly subacute to rounded and mucronate, abaxial surface densely hairy by flowering, surfaces sparsely (moderately) hairy (or glabrous) later.

(5–)7–11(–14)-flowered, (12–)18–32(–51) mm.

(0 or)1(or 2) subtended by a leaf, proximalmost (4–)6–11(–16) mm.

sepals spreading to recurved after flowering, (1–)1.6–2.7(–3.6) mm;

petals to ivory, obovate-oblong, (4.3–)5.9–8.7(–11.3) × (1.4–)2.3–3.9(–5) mm;

stamens (14–)18–21(–22);

styles (3–)5, (1.8–)2.3–3(–3.6) mm;

ovary apex densely hairy.

almost black, 6–8 mm diam. 2n = 2x, 3x, 4x.