Flora of North America species comparison

petiole 3–10 mm;

blade flat to cupped, elliptic to ovate, 10–40(–50) × 5–15(–20) mm, base obtuse to rounded, margins denticulate to serrulate, usually not revolute, sometimes incompletely revolute, teeth glandular, 23–48, apex obtuse, abaxial surface pale green, sparsely puberulent to villosulous or glabrate, veins prominently raised, puberulent to villosulous, adaxial surface dark green, glabrate; 3-veined from base.

petiole 1–4 mm;

blade flat, ovate to widely elliptic, 10–25 × 5–12 mm, base obtuse to rounded, margins serrulate to denticulate most of length, not revolute, teeth 39–71, apex obtuse, abaxial surface light or gray-green, tomentose to tomentulose, adaxial surface dark green, villosulous or puberulent, glabrescent; usually 3-veined from base, rarely pinnately veined (veins sometimes obscured by indumentum).

terminal, usually racemelike, rarely paniclelike, 2.5–9 cm.

axillary or terminal, racemelike or paniclelike, 2–6 cm.

sepals, petals, and nectary usually pale to deep blue, rarely white.

sepals, petals, and nectary usually deep blue, sometimes pale blue.

3–4 mm wide, weakly lobed;

valves smooth, viscid, not crested.

3–4 mm wide, slightly lobed at apex;

valves smooth, viscid when young, crested.

= 24.