Flora of North America species comparison

usually prostrate to ascending, rarely erect, sometimes rooting at proximal nodes;

branchlets reddish to grayish brown, rigid, smooth to slightly ridged, tomentulose, glabrescent.

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.

not fascicled;

petiole 1–2 mm;

blade flat or cupped, obovate to oblong-obovate, 8–20 × 4–12(–15) mm, base cuneate, margins thick to revolute, usually entire, sometimes denticulate near apex, teeth 3–5, apex acute to rounded, truncate, or retuse, abaxial surface grayish green, tomentulose, adaxial surface green, glabrous.

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

axillary, 0.8–1.5 cm.

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

sepals and petals pale to deep blue, sometimes tinged with lavender;

nectary dark purplish green.

3–4 mm wide, weakly lobed;

valves smooth, viscid, not crested.

5–8 mm wide, not to weakly lobed;

valves smooth, horns subapical, minute, erect, intermediate ridges absent.

= 24.