Flora of North America species comparison

1–7, ascending to erect (often declining during anthesis), glabrous, on caudex from fleshy rhizome.

basal and cauline;

basal: 1–5;

stipules lanceolate, margins laciniate, apex acute;

petiole 1–9.6 cm, glabrous;

blade sometimes purple-spotted abaxially and/or adaxially, reniform to ovate, 1–4.5 × 1–4 cm, base broadly cordate to cordate, margins crenate to serrate, mostly eciliate, apex obtuse to acute, surfaces usually pubescent, mostly adaxially toward base, sometimes glabrous;

cauline similar to basal except: petiole 0.4–4 cm;

distal cauline blades ovate to deltate, 1–4.5 × 1–4 cm, base cordate, apex acuminate to acute.

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.

5–9 cm, usually glabrous.

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

sepals lanceolate, margins eciliate, auricles 1–2 mm;

petals pale lavender-violet on both surfaces, all white basally, lower 3 purple-black-veined, all beardless, lowest 8–20 mm, spur white, purple, or lavender-tinged, elongated, 10–20 mm;

style head beardless; cleistogamous flowers axillary.

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, 4–6 mm, glabrous.

ellipsoid, 8–10 mm, glabrous.

beige to bronze, 1.3–2 mm.

unknown.

and ruderal areas; 10–50 m; introduced;

Mass.;

Asia (China, Japan, Korea).

= 20.

= 48.Flowering Apr–Jun.