Flora of North America species comparison

erect or prostrate basally, (20–)30–100(–170) cm, usually thick-fleshy, glabrous.

creeping, 5–50 cm, eglandular- and glandular-hairy.

petiole 0–2(–8) mm (basal lateral branches usually distinctly petiolate to 8 mm) proximally, 0 mm distally;

blade (of proximal leaves) ovate, elliptic, or oblong, (15–)30–80(–145) × (7–)10–30(–45) mm, 1.5–3 times as long as wide, base obtuse proximally to cordate-amplexicaul in middle and ± cuneate distally, margins ± serrulate or denticulate, apex acute, surfaces glabrous, rarely glandular-hairy.

blade suborbiculate, 4–13 × 4–14 mm, base cordate, margins crenate-serrate, teeth (2 or)3–5(or 6) per side, apex rounded, surfaces sparsely eglandular- and/or glandular-hairy.

6–25, axillary, 50–100(–150) mm, 5–10 mm diam., (20–)30–40(–60)-flowered, axis glabrous, rarely glandular-hairy;

bracts linear to lanceolate, 2–5 mm, apex acute.

1–6, terminal, 50–500 mm, 10–20-flowered, axis sparsely eglandular- and/or glandular-hairy;

bracts suborbiculate, 4–13 mm.

suberect or arcuate-erect to subpatent, curved upwards in fruit, 3–7(–10) mm, longer than subtending bracts, glabrous or hairy.

patent or recurved, (15–)20–30 mm, length 2–5 times subtending bract, eglandular- and glandular-hairy.

calyx lobes 2–3 mm, apex acute, glabrous, rarely hairy;

corolla lavender to pale blue, rarely pale lilac, (4–)6–8 mm diam.;

stamens 3–3.5 mm;

style 1.5–2.5 mm.

calyx lobes 4–7 mm, 1.5–2.5 mm wide, apex rounded, sparsely glandular-hairy to glabrate;

corolla blue-violet to pale blue and white, 8–14 mm diam.;

stamens 2.1–2.5 mm;

style 3–4 mm.

slightly compressed in cross section, globular, (2.5–)3–3.5(–4) × 2.5–3.2(–4) mm, apex rounded or ± emarginate, glabrous or sparsely short glandular-hairy.

compressed in cross section, subglobular, 3.5–5 × 5.5–6.5 mm, apex emarginate, sinus angle 50–90°, absent or almost smooth, glabrous or glandular-ciliate.

40–77, yellow-brown, ellipsoid to subglobular, planoconvex, (0.3–)0.5–0.7 × 0.3–0.5 mm, 0.2–0.3 mm thick, smooth.

(2–)6–14(–18), ochre, ovoid, flat to ± excavate, 1.3–1.7 × 1–1.3 mm, 0.6–0.8 mm thick, rugose to rugulose.

= 36.

= 14 (Europe).