Flora of North America species comparison

creeping, 5–50 cm, eglandular- and glandular-hairy.

ascending, often dark bluish distally, sparsely branched at base, 5–15(–25) cm, eglandular-hairy.

blade suborbiculate, 4–13 × 4–14 mm, base cordate, margins crenate-serrate, teeth (2 or)3–5(or 6) per side, apex rounded, surfaces sparsely eglandular- and/or glandular-hairy.

blade ovate or oblong-elliptic, 7–30 × 4–20 mm, base cuneate, margins indistinctly dentate or entire, apex short-acuminate, abaxial surface glabrate, adaxial ± hairy.

1–6, terminal, 50–500 mm, 10–20-flowered, axis sparsely eglandular- and/or glandular-hairy;

bracts suborbiculate, 4–13 mm.

1, terminal, 5–20 mm, to 30 mm in fruit, (1–)3–20-flowered, axis eglandular-hairy;

bracts oblanceolate, 4–5 mm.

patent or recurved, (15–)20–30 mm, length 2–5 times subtending bract, eglandular- and glandular-hairy.

ascending to erect, 1.5–2(–4) mm, shorter than subtending bract, eglandular-hairy.

calyx lobes 4–7 mm, 1.5–2.5 mm wide, apex rounded, sparsely glandular-hairy to glabrate;

corolla blue-violet to pale blue and white, 8–14 mm diam.;

stamens 2.1–2.5 mm;

style 3–4 mm.

calyx lobes 3–4 mm, ciliate, apex obtuse or acuminate, eglandular-hairy;

corolla sky blue or blue-violet, sometimes white, rotate, 2.5–5.5 mm diam.;

stamens 2–2.3 mm;

style 0.5–1.5(–2) mm.

compressed in cross section, subglobular, 3.5–5 × 5.5–6.5 mm, apex emarginate, sinus angle 50–90°, absent or almost smooth, glabrous or glandular-ciliate.

compressed in cross section, obovoid or oblong-obovoid, 4.5–7.5 × 3.5–5.5 mm, ca. as long as wide, apex shallowly emarginate, eglandular-hairy or glabrate.

(2–)6–14(–18), ochre, ovoid, flat to ± excavate, 1.3–1.7 × 1–1.3 mm, 0.6–0.8 mm thick, rugose to rugulose.

9–53, brown to yellow, ellipsoid-oblong, flat, 0.7–1.2 × 0.4–1 mm, 0.1 mm thick, smooth.

= 14 (Europe).

= 18.