Flora of North America species comparison

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

erect, (7–)10–20(–30) cm, eglandular- and/or glandular-hairy.

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

blade lanceolate or elliptic, (6–)12–28(–35) × 3–12(–20) mm, base cuneate, margins serrate, teeth 4–7(–12) per side, apex acute, surfaces sparsely glandular-hairy or glabrate.

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

bracts lanceolate, 2–5 mm.

1–8, terminal, usually reduced and replaced by 2 pseudodichotomous racemes with additional axillary racemes, 80–150 mm, (5–)10–25(–35)-flowered, axis eglandular- and/or glandular-hairy;

bracts lanceolate, 9–12 mm, proximals with margins serrate, distals sometimes entire.

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

erect-patent to spreading proximally, deflexed distally, (3–)6–9(–12) mm, shorter than subtending bract, densely glandular- and eglandular-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 (5–)6–8.5(–10) mm, apex acuminate-acute, pairs connate 0.8–1.1 mm, glandular- and eglandular-hairy, rarely sparsely hairy;

corolla mostly intense blue with white center, 4–6 mm diam.;

stamens 2.5 mm;

style (0.7–)1–1.3(–1.7) mm.

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

slightly compressed in cross section, 3.5–5 × (4–)5–8 mm, apex emarginate, sinus angle 30–45(–60)°, densely eglandular- and glandular-hairy, rarely eglandular-hairy.

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

4–10, yellowish brown, oblong to ovoid, cymbiform, 1.5–2.5 × 0.8–1.5 mm, 0.8 mm thick, cristate, dorsally reticulate-verrucate.

= 18 (Japan, Russia).

= 18, 42 (Asia).