Flora of North America species comparison

ascending to erect, 15–40(–65) cm, glabrous, not glaucous.

ascending to erect, 4–10(–17) cm, retrorsely hairy or puberulent, not glaucous.

basal and cauline, not leathery, glabrous;

basal and proximal cauline (23–)40–90(–120) × 6–14(–24) mm, blade spatulate to elliptic, base tapered, margins entire, apex rounded to obtuse or acute;

cauline 3–6 pairs, sessile or proximals short- to long-petiolate, 24–115 × 4–15 mm, blade oblanceolate to lanceolate, base tapered to truncate or clasping, margins entire, apex obtuse to acute.

persistent, 5–10 pairs, distals usually distinctly smaller than proximals, short-petiolate or sessile, (5–)10–20(–30) × 4–11 mm, blade elliptic to orbiculate, ovate, or spatulate, base tapered, margins entire or serrulate, apex rounded to obtuse or acute, glabrous or obscurely puberulent, not glaucous.

interrupted, cylindric, 6–15 cm, axis glabrous, verticillasters 2–6, cymes 3–11-flowered, 2 per node;

proximal bracts lanceolate, 8–50 × 1–8 mm, margins entire;

peduncles and pedicels erect, glabrous.

continuous, ± secund, 1–6 cm, axis retrorsely hairy proximally, retrorsely hairy and glandular-pubescent distally, verticillasters (1 or)2–7, cymes 1-flowered;

proximal bracts round to ovate or lanceolate, 3–12 × 1–6 mm, margins entire;

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

calyx lobes ovate to lanceolate, 3–5.5 × 1.2–2.1 mm, apex acute to short-caudate, glabrous;

corolla white or lavender, without nectar guides, funnelform, 10–15 mm, glabrous externally, moderately yellow- or white-lanate internally abaxially, tube 4–5 mm, throat slightly inflated, 3–4 mm diam., 2-ridged abaxially;

stamens: longer pair reaching orifice or slightly exserted, pollen sacs opposite, navicular, 0.6–0.8 mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth;

staminode 6–7 mm, included, 0.3–0.4 mm diam., tip straight, distal 0.5–3 mm moderately pilose, hairs yellow, to 0.8 mm, rarely glabrous;

style 7–8 mm.

calyx lobes lanceolate to linear, 7–12(–14) × 2.5–4.3 mm, glandular-pubescent;

corolla lavender to bluish lavender, violet, or purple, essentially unlined internally but abaxial ridges usually lavender or white, nearly personate, funnelform, 20–45 mm, glabrous externally, sparsely to moderately white-villous internally abaxially, tube (4–)6–12 mm, throat 7–12 mm diam.;

stamens included, pollen sacs 0.9–1.6 mm;

staminode 7–14 mm, slightly flattened distally, 0.1–0.2 mm diam., tip straight, distal 4–7 mm sparsely to densely villous, hairs whitish, to 1 mm;

style 19–26 mm.

4–7 × 3–4 mm, glabrous.

8–13 × 5–8 mm.

= 32.