Flora of North America species comparison

basal, 2–5, prostrate to ascending, often overlapping basally;

stipules linear-lanceolate, margins entire, apex acute;

petiole 2–8 cm, pubescent;

blade unlobed, orbiculate, reniform, or ovate, 2–12 × 1.5–9 cm, base cordate, margins crenate to serrate, sometimes glandular, ciliate or eciliate, apex rounded to acute, surfaces usually pubescent throughout or concentrated proximally on both surfaces.

basal, ca. 5, ascending to erect;

stipules ± oblong, 2-fid, proximal margins entire, distal ± serrate, apex acuminate;

petiole narrowly winged distally, 1–14 cm, usually glabrous;

blade unlobed, broadly ovate or triangular-ovate, 3–8 × 3–5.5 cm, base cordate, margins crenate, usually eciliate, apex acute or ± obtuse, surfaces sparsely puberulent.

1.5–7 cm, usually pubescent.

3–6 cm, glabrous or pubescent, bracteoles near middle.

sepals lanceolate to ovate, margins ciliate or eciliate, auricles 0.5–1 mm;

petals deep lemon-yellow on both surfaces, lower 3 brownish purple-veined, lateral 2 bearded, lowest 8–11 mm, spur yellow, gibbous, 1–2 mm;

style head beardless; cleistogamous flowers on prostrate or partially subterranean rhizomes or on racemelike, nonrooting, and usually leafless branches growing from rhizome apex.

sepals broadly lanceolate, margins eciliate, auricles 6–8 mm;

petals light violet or whitish violet on both surfaces, lowest 3 occasionally white basally, often dark violet-veined, lateral 2 sparsely bearded or beardless, lowest 17–20 mm, spur pale to dark violet, elongated, 5–10 mm;

style head beardless; cleistogamous flowers present.

ellipsoid, 5–10 mm, glabrous.

ellipsoid, 8–10 mm, glabrous.

beige, 1–2 mm.

unknown.

and ruderal areas; 10–50 m; introduced;

Mass.;

Asia (China, Japan, Korea).

= 12.

= 48.Flowering Apr–Jun.