Flora of North America species comparison

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

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

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

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

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

bracts lanceolate, 2–5 mm.

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

bracts lanceolate, 3–7(–11) mm.

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

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

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.

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.

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

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

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

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

= 18 (Japan, Russia).

= 18, 72.