Flora of North America species comparison

ascending, (5–)15–45(–80) cm, glabrous, sometimes sparsely eglandular-hairy distally.

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

petiole 0 mm;

blade narrowly lanceolate or linear, rarely elliptic, (10–)30–50(–80) × (2–)3–7(–14) mm, 6–10 times as long as wide, base cuneate, margins remote- and fine-dentate, apex acute, abaxial surface glabrous, adaxial glabrous or sparsely eglandular-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.

1–5(–10), axillary, 40–90(–150) mm, (2–)5–20-flowered, axis glabrous, sometimes sparsely eglandular-hairy;

bracts lanceolate, 1.5–3 mm.

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.

patent or ± curled, (6–)10–15(–17) mm, longer than subtending bracts, glabrous.

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

calyx lobes (1–)2–3 mm, apex obtuse to acute, glabrate;

corolla pale lilac, pale sky blue, or whitish, with pink or dark blue narrow stripes, 2.5–7 mm diam.;

stamens 4–5 mm;

style (1–)2–4 mm.

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.

compressed in cross section, ovoid or reniform, 2.5–5 × (3–)4–6 mm, apex emarginate by 1/3 length, glabrous.

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.

5–20, pale brownish, globular or ovoid, flat, 1.2–1.9 × 1–1.5 mm, 0.2 mm thick, smooth.

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.

= 18.

= 36.