Flora of North America species comparison

erect, unbranched or sparsely branched at base, (5–)10–15(–30) cm, finely glandular-hairy.

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

blade elliptic-ovate, (5–)10–25 × 5–10 mm, base cuneate, margins entire or subentire, apex short-acuminate, surfaces glabrous or glabrate.

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.

1, terminal, (15–)40–80(–130) mm, (4–)8–30(–40)-flowered, axis finely glandular-hairy;

bracts lanceolate, 3–7(–11) mm.

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.

erect, 3–9 mm, equal to or ± longer than subtending bract, finely glandular-hairy.

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

calyx lobes 2–3 mm, apex acute to obtuse, finely glandular-hairy;

corolla deep blue-violet, rarely white, rotate, (8–)10–13 mm diam.;

stamens 4–8 mm;

style (5–)6–9(–10) mm, conspicuously exerted.

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.

compressed in cross section, oblong-obovoid, 4–6 × 3.5–5.5 mm, ca. as long as wide, apex emarginate, finely glandular-hairy.

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

28–32, straw colored or dark brown, ovoid, flat, 0.6 × 0.4 mm, 0.1 mm thick, rough.

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.

= 18, 72.

= 14 (Eurasia).