Flora of North America species comparison

erect or ascending, often blue tinged, (3–)5–15(–20) cm, densely hairy.

erect to ascending, unbranched, (5–)10–20(–25) cm, eglandular-hairy.

blade: proximal ovate to triangular, 5–7 × 3–6 mm, distal 8–18 × 8–18 mm, base rounded, margins (proximal) coarsely crenate or (distal) 3–5(–7)-palmatifid, apex obtuse, surfaces sparsely hairy, often glandular.

blade ovate, 15–30 × 10–20 mm, base rounded, margins dentate or serrate, apex subacute to subobtuse, surfaces eglandular-hairy.

1, terminal, sometimes also 1 or 2 axillary, 30–120(–150) mm, 6–15(–25)-flowered, axis densely eglandular- and glandular-hairy;

proximal bracts 5-palmatifid, distal 3-fid, 4–18 mm.

1, terminal, 10–60 mm, to 100 mm in fruit, 5–15-flowered, axis hairy;

bracts lanceolate, 2–5 mm.

patent or arcuate-ascending, 4–11(–20) mm, ± equal to subtending bract, length 1–2 times calyx, densely hairy.

erect, 2–11 mm, equal to longer than subtending bract, crisp-hairy.

calyx lobes 4–6(–11) mm, apex obtuse, glandular-hairy;

corolla deep blue, 5–10 mm diam.;

stamens 0.9–1.7 mm;

style (0.5–)0.7–1.5(–2) mm.

calyx lobes 4–5 mm, eglandular-ciliate, apex acuminate, glabrous or sparsely hairy;

corolla pale blue or violet, rotate, 8–10 mm diam.;

stamens 7 mm;

style 3–6 mm.

± inflated basally, compressed distally in cross section, obcordiform, 4–5(–10) × 4.5–6.5(–8) mm, apex emarginate, glandular-hairy.

compressed in cross section, oblong, 5–6(–8) × 3–4.5 mm, longer than wide, apex ± emarginate, glabrous proximally, hairy distally.

14–22(–35), dark brown or blackish, subglobular, cymbiform, 1–2.2 × 0.7–2 mm, 0.4–0.9 mm thick, ± rugulose to cristate.

number unknown, brown, ovoid, flat, 1–1.5 × 0.7–1.2 mm, thickness and texture unknown.

= 14 (Eurasia).

= 18 (Japan, Russia).