Flora of North America species comparison

erect or prostrate basally, 10–100 cm, glabrous at least proximally, glandular-hairy distally.

decumbent to ascending, (5–)10–30 cm, sparsely subvillous to glabrate.

petiole 0–5 mm;

blade elliptic to ovate, sometimes ovate-oblong or linear-lanceolate, rarely lanceolate, 20–50(–100) × 5–20(–25) mm, 2.5–4 times as long as wide, base attenuate, upwards amplexicaul, margins subentire or crenate to serrate or ± undulate, apex acute to obtuse, surfaces glabrous.

blade suborbiculate, 6–20 × 9–20 mm, base subcordate, truncate, or cuneate, margins 5–9-lobed 1/6–1/3 of width of blade, lateral lobes ± narrower, apex acute, surfaces eglandular-hairy, rarely also glandular-hairy or glabrate.

6–25, axillary, 50–220 mm, 10–15 mm diam., 10–100-flowered, axis sparsely glandular-hairy, rarely glabrous;

pedicels 2–6 per cm;

bracts linear to lanceolate, 3–6 mm, apex acute.

1–10, terminal, (50–)100–300 mm, 5–20-flowered, axis eglandular-hairy, rarely also glandular-hairy or glabrate;

bracts suborbiculate, 6–20 mm, 5- to 9-lobed for 1/6–1/3 of width of leaf blade, lateral lobes ± narrower.

patent, 3–5 mm, equal to subtending bract, sparsely glandular-hairy.

patent or recurved, 5–15(–30) mm, equal in flower to ± longer than subtending bract in fruit, eglandular- or glandular-pilose or glabrous.

calyx lobes 1.5–2(–3) mm, apex acute, sparsely glandular-hairy, rarely glabrous;

corolla pale blue or pale lilac, rarely white, 2.5–5 mm diam.;

stamens 2 mm;

style 0.9–2 mm.

calyx lobes erect-patent, (3–)4–5 mm, apex obtuse, abaxial surfaces eglandular- or glandular-hairy, rarely glabrous, not ciliate;

corolla white, 6–12 mm diam.;

stamens 1–2 mm;

style 1–2 mm.

slightly compressed in cross section, obcordiform to globular, 2–3 × 2–3 mm, apex rounded or ± emarginate, sparsely glandular-hairy.

± round in cross section, ovoid to ellipsoid, 2.5–3.5 × 3.5–4.5 mm, apex ± emarginate, eglandular- or glandular-pilose.

30–40, ochre, broadly ellipsoid, ± flat, convex on both sides, 0.5–0.6 × 0.4–0.5 mm, thickness and texture unknown.

1–4, brownish orange, subglobular, urn-shaped (elaiosome inside), (2–)2.5–3.1 × (1.7–)2–2.5(–2.8) mm, 1.1–1.7 mm thick, cristate.

= 54 (Asia).

= 36, 54 (Eurasia).