Flora of North America species comparison

erect or ascending, 15–60(–80) cm, glabrous or glandular-hairy distally.

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

petiole 0 mm;

blade oblong-ovate to oblong-lanceolate, (5–)25–50(–100) × 4–15(–30) mm, 2.5–5 times as long as wide, base amplexical-truncate or amplexical-subcordate, margins entire or subentire, apex acute, surfaces glabrous.

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

10–25, axillary, 100–160 mm, 15–25-flowered, axis glabrous or glandular-hispid;

pedicels less than 3 per cm, glabrous or scarcely to densely short glandular-hairy, rarely completely glabrous;

bracts oblong, 3–5 mm, apex obtuse.

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

bracts lanceolate, 2–5 mm.

patent, (3–)5–10 mm, equal to or ± shorter than subtending bract, glabrous or glandular-hairy.

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

calyx lobes 2.5–3 mm, apex obtuse, glabrous or glandular-hairy;

corolla white to pale pink with darker veins not reaching margins, 4–5 mm diam.;

stamens 5 mm;

style (1.3–)1.5–2.5 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.

± compressed in cross section, subglobular, 2.5–3(–3.5) × 3–4 mm, apex emarginate, sinus 0.1–0.3 mm, glabrous or glandular-hairy.

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

26–123, yellow-brown, ellipsoid to subglobular, planoconvex, 0.4–0.7 × 0.3–0.5 mm, 0.2–0.3 mm thick, smooth.

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

= 36.

= 18 (Japan, Russia).