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.

prostrate, spreading, or ascending, rooting at distal nodes;

branchlets reddish brown, ± flexible, puberulent, glabrescent.

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.

not fascicled, crowded, usually longer than internodes and obscuring them;

petiole 1–3 mm;

blade flat to ± cupped, elliptic to obovate, 6–30 × 4–16 mm, base cuneate, margins sometimes thick, not revolute, sometimes wavy, sharply dentate to spinose-dentate, teeth 3–9, apex rounded, abaxial surface pale green, glabrous except sparsely strigillose on veins, adaxial surface dark green, shiny, glabrate.

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

axillary, 0.9–2 cm.

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

sepals, petals, and nectary pale to deep blue or purplish blue.

4–5 mm wide, weakly lobed near apex;

valves smooth, crested.

6–9 mm wide, lobed;

valves smooth to rugulose, horns subapical, prominent, erect or spreading, rugose or not, intermediate ridges present.

= 24.