Flora of North America species comparison

erect or ascending, (2.5–)4–25(–35) cm, glabrous or densely glandular-hairy.

creeping to decumbent, 5–25 cm, hairy.

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

blade oblanceolate proximally, narrowly oblong distally, 5–28(–35) × 2–6(–10) mm, 3–10 times as long as wide, base cuneate, margins entire or dentate distally, apex acute, surfaces glabrous or densely glandular-hairy.

blade elliptic-ovate to oblong, (6–)8–16(–19) × (3–)4–10(–13) mm, base truncate, margins serrate, teeth 4–6(–8) per side, apex obtuse to acute, abaxial surface ± more densely hairy than adaxial.

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.

1, terminal, sometimes 1 or 2 axillary, 20–200 mm, (2–)5–40-flowered, axis glabrous or densely glandular-hairy;

bracts spatulate to linear-lanceolate, 3–22 mm.

1–5, terminal, 50–250 mm, 5–15-flowered, axis eglandular-hairy, sometimes glandular-hairy;

bracts elliptic-ovate to oblong, (6–)9–16(–19) mm.

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

bracts suborbiculate, 4–13 mm.

erect, 0.2–1(–2) mm, much shorter than subtending bract, glabrous or densely glandular-hairy.

deflexed, (5–)6–10(–15) mm, ± shorter than subtending bracts, densely eglandular- and, sometimes, glandular-hairy distally.

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

calyx lobes (2–)3–6 mm, 0.9–2 mm wide, apex obtuse to acute, glabrous or densely glandular-hairy;

corolla white or pale pink, 2–5 mm diam.;

stamens 1 mm;

style 0.1–0.5 mm.

calyx lobes linear-lanceolate, (5–)6–7 mm, 2.2–2.6 mm wide, apex rounded, sparsely eglandular- or glandular-hairy;

corolla white or pale pinkish or pale blue, 4–5(–6) mm diam.;

stamens 0.5–1 mm;

style (0.6–)0.9–1.1(–1.2) mm.

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.

strongly compressed in cross section, obcordiform, 2.5–5 × 2.5–6 mm, apex ± emarginate, glabrous.

± compressed in cross section, ± subglobular, 3.5–4.5(–4.7) × 4.5–6(–6.3) mm, apex emarginate, sparsely glandular-hairy.

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.

12–140, yellow or pale brown, oblong, flat, 0.6–1.6 × 0.4–0.9 mm, 0.1–0.2 mm thick, smooth.

6–14, yellow to ochre, globular, cymbiform, 1.3–2.1 × 1–1.6 mm, 0.6–1.1 mm thick, strongly rugose (transversely ribbed).

(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.

= 52.

= 28 (Europe).

= 14 (Europe).