Flora of North America species comparison

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

erect or ascending, (1–)3–15(–20) cm, at least distally glandular- and eglandular-hairy.

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 lanceolate to ovate, (4–)6–13 × (2.5–)4–10 mm, 1.3–1.6 times as long as wide, base cuneate, proximal margins coarsely crenate-serrate, distal pinnatifid to subpalmatifid, lobes 3–7, central largest, lateral linear to lanceolate, apex of central lobe obtuse, lateral ± acute, surfaces sparsely glandular-hairy.

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.

1–3, terminal and axillary, 20–80 mm, (5–)15–40(–60)-flowered, axis eglandular- and glandular-hairy;

bracts proximalmost often 3-fid, others linear-lanceolate, 3–5(–8) mm.

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

erect, (0.4–)1–3 mm, shorter than subtending bract, length 1/3–1/2 times calyx, eglandular- and 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–)3–5(–7) mm, apex acute, eglandular- and glandular-hairy;

corolla sky to pale blue, 1.5–3 mm diam.;

stamens 0.2–0.6 mm;

style 0.2–0.6 mm, stigma white.

± 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 × 3.5–5 mm, apex emarginate, eglandular-hairy.

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

8–20(–26), yellowish, ellipsoid, flat, 0.9–1.6 × 0.6–1.3 mm, 0.2 mm thick, smooth to ± rugulose.

= 36.

= 16 (Eurasia).