Flora of North America species comparison

usually clustered, erect, sparingly branched, herbaceous, stiff, glabrous, glaucous.

ocrea persistent or deciduous, brownish, cylindric, 6–12 mm, margins oblique, face without reflexed and slender bristles at base, otherwise glabrous or puberulent;

petiole 1–4 cm, glabrous;

blade ovate-oblong, 15–30(–40) × 7–25 cm, base cordate, margins entire, glabrous or scabrous to ciliate, apex obtuse to acute, abaxial face minutely dotted, glaucous, with hairs along veins distinctly multicellular, 0.2–0.6 mm, tips acute to acuminate, adaxial face glabrous.

axillary, mostly distal, erect or spreading, paniclelike, 3–8 cm, axes puberulent to pubescent;

peduncle 0.1–4 cm or absent, puberulent to reddish-pubescent.

ascending or spreading, articulated proximal to middle, 2–4 mm, glabrous.

bisexual or pistillate, 4–7 per ocreate fascicle;

perianth accrescent in fruit, greenish, 4.5–6.5 mm including stipelike base, glabrous;

tepals obovate to elliptic, apex obtuse to acute, outer 3 winged;

stamens 6–8;

filaments flattened proximally, glabrous;

styles connate basally;

stigmas fimbriate.

included, brown, 2.8–4.5 × 1.1–1.8 mm, shiny, smooth; fruiting perianth glabrous, wings flat to undulate, 1.8–2.2 mm wide at maturity, decurrent on stipelike base to articulation, margins entire.

= 44, 66, 102, 132 (Japan, Korea).