Flora of North America species comparison

ascending to erect, 13–40 cm, glabrous, glaucous.

ascending, 2–10(–14) cm, densely retrorsely hairy.

persistent, 3–5 pairs, short-petiolate or sessile, 15–80 × (5–)11–28 mm, blade elliptic to ovate, oblanceolate, or spatulate, base tapered to clasping, margins entire or irregularly serrate to serrulate, apex rounded to obtuse or acute, glabrous, glaucous.

basal and cauline, not leathery, densely retrorsely hairy;

basal and proximal cauline petiolate, 12–35(–50) × 3–10 mm, blade ovate to lanceolate, base tapered, margins entire, rarely obscurely dentate, apex obtuse to acute;

cauline 1–3 pairs, sessile, 13–34 × 2–6 mm, blade oblanceolate to lanceolate or linear, base tapered to slightly clasping, margins entire, apex obtuse to acute.

continuous, secund, 7–13 cm, axis glabrous, verticillasters 6–8, cymes 1- or 2-flowered;

proximal bracts ovate, 7–28 × 3–17 mm;

peduncles and pedicels ascending to erect, glabrous.

continuous, cylindric, axis glandular-pubescent, 2–3(–8) cm, verticillasters 1–5(or 6), cymes 2–4-flowered, 2 per node;

proximal bracts lanceolate, 11–20 × 2–6 mm;

peduncles and pedicels glandular-pubescent.

calyx lobes ovate to lanceolate, 5–7.5 × 2.2–3.5 mm, glabrous or inconspicuously glandular proximally;

corolla lilac to purple, essentially unlined internally but abaxial ridges usually lilac or white, not personate, funnelform, 33–38 mm, glabrous externally, sparsely to densely white-lanate internally abaxially, tube 6–8 mm, throat 7–10 mm diam.;

stamens included, pollen sacs 1.2–1.6 mm;

staminode 7–13 mm, essentially terete distally, 0.1 mm diam., tip straight, glabrous;

style 20–26 mm.

calyx lobes ovate to lanceolate, 4–6 × 1.8–2.2 mm, glandular-pubescent;

corolla violet to blue or purple, with reddish violet nectar guides, tubular-funnelform, 12–16 mm, sparsely yellow-lanate internally abaxially, tube 5–6 mm, throat gradually inflated, not constricted at orifice, 4–7 mm diam., rounded abaxially;

stamens included, pollen sacs parallel, navicular, 1.7–2 mm, dehiscing completely, sutures papillate;

staminode 8–9 mm, included or reaching orifice, 0.8–0.9 mm diam., tip straight, distal 5–6 mm moderately to densely pubescent, hairs orange, to 0.8 mm;

style 9–11 mm.

8–10 × 5–7 mm.

4–7 × 3–4.5 mm.

= 16.