Flora of North America species comparison

erect or ascending, 15–60(–80) cm, glabrous or glandular-hairy distally.

creeping to ascending, 5–40 cm, scattered eglandular hairs only, often also with glandular hairs, sometimes glabrate.

petiole 0 mm;

blade oblong-ovate to oblong-lanceolate, (5–)25–50(–100) × 4–15(–30) mm, 2.5–5 times as long as wide, base amplexical-truncate or amplexical-subcordate, margins entire or subentire, apex acute, surfaces glabrous.

blade oblong-lanceolate to ovate, 8–25 × 5–13 mm, 1.5–2.5 times as long as wide, base cuneate, margins subentire or serrulate-crenate, apex rounded to short-acuminate, surfaces glabrate.

10–25, axillary, 100–160 mm, 15–25-flowered, axis glabrous or glandular-hispid;

pedicels less than 3 per cm, glabrous or scarcely to densely short glandular-hairy, rarely completely glabrous;

bracts oblong, 3–5 mm, apex obtuse.

1, terminal, 50–100 mm, 10–30(–60)-flowered, axis eglandular- and glandular-hairy;

bracts oblong, 4–7 mm.

patent, (3–)5–10 mm, equal to or ± shorter than subtending bract, glabrous or glandular-hairy.

erect, 2–5 mm, 4–6 mm in fruit, shorter than subtending bract in flower, eglandular- and, sometimes, glandular-hairy.

calyx lobes 2.5–3 mm, apex obtuse, glabrous or glandular-hairy;

corolla white to pale pink with darker veins not reaching margins, 4–5 mm diam.;

stamens 5 mm;

style (1.3–)1.5–2.5 mm.

calyx lobes 2–3 mm, apex acute, ciliate;

corolla white, blue, or pink, with purple or dark blue veins (except on abaxial lobe), rotate, 5–8 mm diam.;

stamens 2.5–3 mm;

style 2–4 mm.

± compressed in cross section, subglobular, 2.5–3(–3.5) × 3–4 mm, apex emarginate, sinus 0.1–0.3 mm, glabrous or glandular-hairy.

compressed in cross section, obcordiform, 2.5–3.5 × 4–5.5 mm, wider than long, apex acutely emarginate, glandular-ciliate, otherwise glabrate.

26–123, yellow-brown, ellipsoid to subglobular, planoconvex, 0.4–0.7 × 0.3–0.5 mm, 0.2–0.3 mm thick, smooth.

50–72, brown, ellipsoid, flat, 0.6–1.1 × 0.4–1 mm, 0.2 mm thick, smooth.

= 36.

= 14.