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 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.

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

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

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

sepals and petals pale blue to blue;

nectary blue to dark blue.

4–5 mm wide, weakly lobed near apex;

valves smooth, crested.

6–8 mm wide, ± lobed;

valves rugose, ± viscid, weakly crested.

= 24.