Flora of North America species comparison

erect, unbranched or sparsely branched at base, (5–)10–15(–30) cm, finely glandular-hairy.

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

blade elliptic-ovate, (5–)10–25 × 5–10 mm, base cuneate, margins entire or subentire, apex short-acuminate, surfaces glabrous or glabrate.

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.

1, terminal, (15–)40–80(–130) mm, (4–)8–30(–40)-flowered, axis finely glandular-hairy;

bracts lanceolate, 3–7(–11) mm.

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.

erect, 3–9 mm, equal to or ± longer than subtending bract, finely glandular-hairy.

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

calyx lobes 2–3 mm, apex acute to obtuse, finely glandular-hairy;

corolla deep blue-violet, rarely white, rotate, (8–)10–13 mm diam.;

stamens 4–8 mm;

style (5–)6–9(–10) mm, conspicuously exerted.

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, oblong-obovoid, 4–6 × 3.5–5.5 mm, ca. as long as wide, apex emarginate, finely 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.

28–32, straw colored or dark brown, ovoid, flat, 0.6 × 0.4 mm, 0.1 mm thick, rough.

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

= 18, 72.