Flora of North America species comparison

erect, (1–)2–10(–18) cm, eglandular-hairy.

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

blade ovate to lanceolate-ovate, (3–)4–12(–20) × (1–)2–6(–12) mm, base cuneate, margins remotely serrate, rarely dentate, apex acute, surfaces glabrate.

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.

1–8, terminal, 20–80 mm, 5–15(–30)-flowered, axis eglandular- and glandular-hairy;

bracts lanceolate, 6–9 mm, margins entire, apex acute.

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.

straight or scarcely deflexed, erect-spreading to horizontally spreading in fruit, (2–)3–8(–11) mm, shorter than subtending bract, eglandular-hairy, sometimes glandular-hairy, rarely glabrous.

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

calyx lobes (3–)4–7(–9) mm, margins entire, apex acuminate-acute, pairs connate 0.5–1.5 mm, puberulent or glabrate;

corolla pale to clear blue, 2–4 mm diam.;

stamens 1–2 mm;

style 0.4–0.8(–2) mm.

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.

slightly compressed in cross section, obcordiform, (2.4–)2.8–4(–4.5) × (3–)3.5–5(–6) mm, apex emarginate, eglandular- and/or glandular-hairy, rarely glabrous.

± 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.

(2–)4–6(–10), bright yellow, oblong, cymbiform, (1.4–)1.7–2(–2.2) × (0.7–)1–1.3 mm, 0.7 mm thick, smooth.

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

= 28 (Asia).

= 36.