Flora of North America species comparison

ascending to erect, 10–27 cm, retrorsely hairy or puberulent, not glaucous.

decumbent, ascending, or erect, 3–12 cm, retrorsely hairy.

persistent, 6–9 pairs, distals usually distinctly smaller than proximals, short-petiolate or sessile, 15–55 × 4–16 mm, blade elliptic, base tapered, margins subentire or serrate, apex rounded to obtuse or acute, glabrous, ± glaucous.

basal and cauline or mostly basal, not leathery, retrorsely hairy;

basal and proximal cauline short-petiolate or sessile, 7–35(–50) × 1–4 mm, blade oblanceolate to linear, base tapered, margins entire, apex obtuse to acute;

cauline 1–3 pairs, sessile, 12–30 × 1–4 mm, blade oblanceolate to oblong or linear, usually arcuate, base tapered, margins entire, apex acute.

± interrupted, secund, 5–14 cm, axis retrorsely hairy proximally, retrorsely hairy and glandular-pubescent distally, verticillasters 3–7, cymes 1-flowered;

proximal bracts ovate to lanceolate, 6–18 × 3–12 mm, margins serrate, sometimes entire;

peduncles and pedicels ascending to erect, glandular-pubescent, sometimes also puberulent.

interrupted to compact, cylindric, 1–6 cm, axis retrorsely hairy, verticillasters 1–6, cymes 1- or 2-flowered, 1 or 2 per node;

proximal bracts oblanceolate to lanceolate, 7–30 × 1–3 mm;

peduncles and pedicels retrorsely hairy and sparsely glandular-pubescent.

calyx lobes ovate to lanceolate, 8–14 × 2–3.1 mm, glandular-pubescent;

corolla purple to violet, essentially unlined internally but abaxial ridges usually light purple or white, not personate, funnelform, (25–)30–38 mm, glabrous externally, sparsely white-lanate internally abaxially, tube 6–8 mm, throat 9–10 mm diam.;

stamens included, pollen sacs 1.5–1.7 mm;

staminode 11–13 mm, essentially terete distally, 0.1 mm diam., tip straight, distal 4–6 mm moderately to densely villous, hairs white or yellowish, to 1.5 mm;

style 25–29 mm.

calyx lobes lanceolate, 4.5–7 × 1.5–2 mm, puberulent and glandular-pubescent;

corolla blue to violet, with reddish purple nectar guides, tubular-funnelform, 15–20(–23) mm, glabrous or sparsely white-lanate internally abaxially, tube 4–6 mm, throat gradually inflated, not constricted at orifice, 6–8 mm diam., rounded abaxially;

stamens included, pollen sacs opposite, navicular, 0.9–1.2 mm, dehiscing completely, sutures papillate;

staminode 9–12 mm, included, 0.5–0.6 mm diam., tip recurved, distal 6–8 mm sparsely pilose, hairs yellow, to 0.5 mm;

style 9–11 mm.

8–11 × 4–6 mm.

4–7 × 3.5–5.5 mm.

= 16.