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.

erect or weakly ascending to spreading, not rooting at nodes;

branchlets light gray to ashy gray, rigid, puberulent to tomentulose, hairs curly or wavy, 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;

petiole (0–)1–3 mm;

blade flat to ± cupped, elliptic, oblong-elliptic, obovate, or suborbiculate, 5–15(–20) × 3–14(–15) mm, base cuneate to rounded, margins thick, not revolute, entire or remotely denticulate, teeth 1–5(–7), apex acute to ± truncate, abaxial surface pale green to grayish green, glabrate or puberulent, hairs curly or wavy, glabrescent, adaxial surface grayish green, puberulent, hairs curly or wavy, glabrescent.

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

axillary, rarely racemelike, 0.7–3 cm.

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

sepals and petals white to cream, sometimes pale blue or lavender;

nectary yellowish green, brown, or blue.

4–5 mm wide, weakly lobed near apex;

valves smooth, crested.

3.5–6 mm wide, not, or sometimes weakly, lobed;

valves smooth, horns lateral, prominent to minute or absent, spreading, intermediate ridges absent.