Flora of North America species comparison

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

ascending to erect, 16–60 cm, retrorsely hairy, not glaucous.

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, glabrous or proximals sometimes puberulent proximally, not glaucous;

basal and proximal cauline 35–110 × 5–22 mm, blade spatulate to oblanceolate, base tapered, margins entire, apex rounded to obtuse;

cauline 3–7 pairs, sessile, 20–95 × 4–16 mm, blade oblanceolate to elliptic or oblong, base tapered, 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, 4–13 cm, axis puberulent, verticillasters 3–8, cymes (1 or)2–4-flowered, (1 or)2 per node;

proximal bracts lanceolate, proximals 7–55 × 1–15 mm;

peduncles and pedicels puberulent.

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 lanceolate to oblanceolate, 3–5.5 × 1.5–2.2 mm, glabrous or sparsely puberulent;

corolla lavender to violet, with violet nectar guides, ventricose, 16–25 mm, glabrous externally, sparsely white-lanate internally abaxially, tube 4–5 mm, throat gradually inflated, not constricted at orifice, 6–8 mm diam., rounded abaxially;

stamens: longer pair reaching orifice, pollen sacs opposite, navicular, 1.2–1.5 mm, dehiscing completely or incompletely, connective splitting or not, sides glabrous, sutures smooth or papillate;

staminode 9–14 mm, exserted, 0.7–1 mm diam., tip straight to recurved, distal 0.5–2 mm sparsely to moderately pilose, hairs yellow, to 0.8 mm;

style 10–14 mm.

8–10 × 5–7 mm.

9–12 × 4.5–8 mm.

= 16.