Flora of North America species comparison

spreading, sometimes rooting at nodes;

branchlets green, sometimes tinged red, not thorn-tipped, usually round, sometimes angled, in cross section, flexible, puberulent.

petiole 3–11 mm;

blade flat, elliptic to widely ovate, 12–45 × 6–20 mm, base obtuse to rounded, margins serrulate to denticulate, not revolute, usually not wavy, sometimes wavy, teeth 27–42, apex ± obtuse to rounded, abaxial surface pale green, pilosulous, adaxial surface green, pilosulous; usually pinnately veined, rarely 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).

axillary, umbel-like to racemelike, 1.3–4 cm.

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

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

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

4–5 mm wide, weakly lobed near apex;

valves smooth, crested.

3–4 mm wide, slightly lobed at apex;

valves smooth, viscid when young, crested.