Flora of North America species comparison

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.

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

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, 8–10 mm, glabrous.

unknown.

and ruderal areas; 10–50 m; introduced;

Mass.;

Asia (China, Japan, Korea).

= 48.Flowering Apr–Jun.