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 8–25 mm;

blade not aromatic, flat to cupped, widely ovate to elliptic, 25–80 × 20–40 mm, herbaceous, not resinous, base rounded, margins serrulate, teeth (35–)40–65, apex acute to obtuse, abaxial surface pale green, usually densely tomentulose, rarely glabrate, adaxial surface green, dull, glabrous or sparsely puberulent; 3-veined from base.

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

axillary or terminal, paniclelike, conic, 5–12 cm.

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

sepals and petals pale blue to blue;

nectary blue to dark blue.

3–4 mm wide, weakly lobed;

valves smooth, viscid, not crested.

6–8 mm wide, ± lobed;

valves rugose, ± viscid, weakly crested.

= 24.

= 24.