Flora of North America species comparison

ascending, (5–)15–45(–80) cm, glabrous, sometimes sparsely eglandular-hairy distally.

decumbent to ascending, 5–40(–50) cm, eglandular-hairy.

petiole 0 mm;

blade narrowly lanceolate or linear, rarely elliptic, (10–)30–50(–80) × (2–)3–7(–14) mm, 6–10 times as long as wide, base cuneate, margins remote- and fine-dentate, apex acute, abaxial surface glabrous, adaxial glabrous or sparsely eglandular-hairy.

blade suborbiculate, (3–)5-lobed, central lobe usually overtopping lateral ones, (5–)7–15(–20) × 8–16(–25) mm, base truncate, margins (3–)5-lobed, apex acute, surfaces sparsely eglandular-hairy.

1–5(–10), axillary, 40–90(–150) mm, (2–)5–20-flowered, axis glabrous, sometimes sparsely eglandular-hairy;

bracts lanceolate, 1.5–3 mm.

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

bracts suborbiculate, (3–)5-lobed, central lobe usually overtopping lateral ones, (5–)7–15(–20) mm.

patent or ± curled, (6–)10–15(–17) mm, longer than subtending bracts, glabrous.

patent or deflexed, (5–)9–15(–20) mm, equal to or ± shorter than subtending bract, length 2–3 times calyx, eglandular-hairy (in single line adaxially).

calyx lobes (1–)2–3 mm, apex obtuse to acute, glabrate;

corolla pale lilac, pale sky blue, or whitish, with pink or dark blue narrow stripes, 2.5–7 mm diam.;

stamens 4–5 mm;

style (1–)2–4 mm.

calyx lobes 5–6(–7) mm, apex acute, abaxial surface usually glabrous, ciliate with 25–35 hairs per side;

corolla bright blue with bright white center, 5–7(–9) mm diam.;

stamens sky blue, 0.7–1.2 mm;

style (0.6–)0.7–0.9(–1.1) mm.

compressed in cross section, ovoid or reniform, 2.5–5 × (3–)4–6 mm, apex emarginate by 1/3 length, glabrous.

± round in cross section, ovoid, 3–4 × 4.5–6 mm, apex ± emarginate, glabrate.

5–20, pale brownish, globular or ovoid, flat, 1.2–1.9 × 1–1.5 mm, 0.2 mm thick, smooth.

1–4, bright yellow, ellipsoid to subglobular, urn-shaped, 2.3–3.3 × 2–3 mm, 1–2.2 mm thick, weakly cristate or rugose, ± smooth.

= 18.

= 54 (Eurasia).