Flora of North America species comparison

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

erect to ascending, 1–30(–40) cm, glandular- or eglandular-hairy.

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.

in 3–6 pairs per stem;

blade oblong to broadly ovate, (2–)5–14(–35) × (2–)3–10(–18) mm, 2.5 times as long as wide, base truncate, margins crenate-serrate, apex obtuse to rounded, surfaces sparsely eglandular-hairy, rarely also 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.

1(–3), terminal, 20–150 mm, (5–)15–40(–60)-flowered, axis densely eglandular- and glandular-hairy;

bracts linear-oblong, (3.5–)4–6(–10) mm.

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

erect, 0–4 mm, shorter than subtending bract, densely eglandular- and glandular-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–)3.5–5(–6) mm, 0.8–2 mm wide, apex acute, glandular-hairy;

corolla sky blue to intense blue, 2–4 mm diam.;

stamens 0.3–0.5 mm;

style (0.2–)0.4–0.6(–1) mm.

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

compressed in cross section, obcordiform, 2–4 × 2.5–5 mm, apex markedly emarginate, glandular-ciliate, otherwise glabrous.

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

10–30, yellowish, ovoid, flat, 0.7–1.7 × 0.4–1 mm, 0.2–0.4 mm thick, rugose.

= 18.

= 16.