Flora of North America species comparison

creeping to decumbent, 5–25 cm, hairy.

creeping, decumbent to ascending distally, 10–40(–50) cm, densely eglandular-hairy, rarely glabrate or glabrous.

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 ovate, ovate-oblong, or obovate, (8–)20–35(–50) × (3–)10–20(–30) mm, 1.5–2 times as long as wide, base attenuate to cuneate or obtuse, margins dentate, denticulate, or serrulate, apex obtuse to rounded, surfaces sparsely to densely eglandular-hairy, rarely glabrate.

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.

1–4(–8), axillary, 40–60 mm, 10–35(–40)-flowered, axis densely to sparsely eglandular-hairy, sometimes also glandular-hairy, rarely glabrate;

bracts linear-lanceolate or narrowly ovate, (1.5–)3–4(–5) mm.

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

erect, (0.5–)1–2(–3) mm, shorter than subtending bract, densely eglandular-hairy, rarely glandular-hairy or glabrate.

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 4(or 5)-lobed, lobes 2–3.5(–4) mm, apex obtuse, glandular- and eglandular-hairy;

corolla pale blue-lilac to pale pink, rarely white with pink veins, 6–8 mm diam.;

stamens 2.8–3.4 mm;

style 2.5–3(–4) mm.

± 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, triangulate-obdeltoid to obcordiform, 3–5 × 4–5 mm, apex rounded or truncate, rarely emarginate, glandular-hairy, rarely glabrous.

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).

9–24, brown to yellow, ellipsoid, ovoid, or obovoid, flat, 0.8–1.6 × (0.3–)0.6–1.2 mm, 0.2–0.3 mm thick, smooth.

= 28 (Europe).

= 18, 36 (Europe).