Flora of North America species comparison

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

erect or ascending, light grayish green distally, unbranched, (3–)8–50 cm, sparsely to densely villous-hirsute, sometimes also glandular-hairy.

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.

blade elliptic to lanceolate or oblong-ovate, 8–40 × 5–20 mm, base cuneate, margins entire, dentate, or serrate, apex short-acuminate, surfaces sparsely to densely villous-hirsute or glabrous.

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.

1, terminal, 5–40 mm, to 60(–150) mm in fruit, (2–)5–25-flowered, axis densely villous-hirsute and ± glandular-hairy;

bracts linear to lanceolate, 1–8 mm.

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

erect, 2–10(–15) mm, ca. equal to subtending bract, densely villous-hirsute or glandular-hairy.

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.

calyx lobes (2.5–)3–5.5(–7) mm, apex obtuse or acuminate, glabrous or densely glandular-hairy;

corolla deep blue-violet or violet-purple to deep blue, rotate, 3–11 mm diam.;

stamens 1–2 mm;

style 0.8–4(–6) mm.

± 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.

compressed in cross section, oblong-obovoid, 4–6(–8) × (2.8–)4–5.5 mm, ca. as long as wide, apex emarginate, usually densely glandular-hairy.

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

10–50, straw colored, ellipsoid, flat, 0.7–1 × 0.4–1 mm, 0.05–1 mm thick, very minutely striate.

= 36.