Flora of North America species comparison

creeping to decumbent, 5–20(–40) cm, eglandular-hairy.

decumbent to ascending, sometimes erect in young plants, 5–40(–50) cm, eglandular-hairy.

blade suborbiculate to ovate, rarely oblong-ovate, (3–)6–11(–14) × (3–)4–9(–10) mm, base truncate, margins serrate to dentate, teeth 2–4 per side, apices usually rounded, apex acute to obtuse, abaxial surface densely hairy, adaxial sparsely hairy to glabrate.

blade ovate to broadly ovate, 5(–7)-lobed, central lobe longer than wide and broadest, (7–)9–15(–25) × (7–)9–17(–27) mm, base truncate, margins 5(–7)-lobed, apex obtuse to rounded, surfaces sparsely eglandular-hairy.

1–4, terminal, 50–200(–400) mm, 5–20-flowered, axis sparsely to densely hairy or glabrate;

bracts suborbiculate to ovate, (3–)6–11(–14) mm.

1–10, terminal, 50–400(–500) mm, 5–20-flowered, axis eglandular-hairy;

bracts broadly ovate, 5(–7)-lobed, central lobe longer than wide and broadest, (7–)9–15(–25) mm.

usually semicircularly recurved, (3–)6–13(–15) mm, 0.5–1.5 times subtending bract, densely eglandular-hairy.

patent or deflexed, (7–)10–18(–24) mm, ± longer than subtending bract, length 3–4(–6) times calyx, eglandular-hairy (densely adaxially).

calyx lobes broadly ovate, (3–)4–6(–7) mm, 2.6–3.8 mm wide, apex acute, eglandular-hairy, rarely glandular-hairy;

corolla intense dark to bright blue, rarely pale lilac or white, with darker nerves, abaxial 1/2 often brighter to whitish, (3–)4–7(–8) mm diam.;

stamens 0.5 mm;

style (0.5–)1–1.6(–1.8) mm.

calyx lobes 3–4 mm, apex acute, sparsely hairy on abaxial surface or glabrous, ciliate with 25–35 hairs per side;

corolla pale violet to whitish, 4–5(–6) mm diam.;

stamens pale violet, 0.4–0.8 mm;

style 0.2–0.7 mm.

± round in cross section, obcordiform, (2.5–)3–4(–4.5) × (3.5–)4–6(–6.3) mm, apex emarginate, sinus angle 20–60(–80)°, densely eglandular-hairy, sometimes also glandular-puberulent, rarely glabrous.

± round in cross section, ovoid, 2–3 × 3.5–5 mm, apex ± emarginate, glabrate.

(7–)16–24(–30), pale yellow, ellipsoid to ovoid, deeply cymbiform, 0.9–1.6 × (0.5–)0.8–1.3 mm, 0.4–0.8 mm thick, rugose-cristate.

1–4, bright reddish brown, broadly ovoid to subglobular, urn-shaped, 2.2–2.7 × 2–2.4 mm, 1–1.8 mm thick, transverse ribs inconspicuous, thinner towards margin, margins strongly involute.

= 14 (Eurasia).

= 36 (Europe).