Flora of North America species comparison

erect, (15–)20–55(–60) cm, glabrous.

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

basal and cauline, glabrous;

basal and proximal cauline 20–100 × 4–24 mm, blade spatulate to oblanceolate, base tapered, apex rounded to obtuse or acute, sometimes mucronate;

cauline 2–5 pairs, sessile, (14–)23–95 × (4–)6–31 mm, blade lanceolate or ovate to trullate, base clasping to cordate-clasping, apex obtuse to acute.

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.

interrupted, cylindric, (5–)11–38 cm, axis glabrous, verticillasters (3 or)4–12, cymes 2- or 3(–5)-flowered;

proximal bracts trullate to ovate, 11–70 × 7–38 mm;

peduncles and pedicels glabrous.

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.

calyx lobes ovate, 4.5–7 × 1.5–3.5 mm, margins entire or erose, broadly scarious, glabrous or obscurely glandular along margins distally;

corolla lavender to violet or bluish, with violet or reddish purple nectar guides, tubular-salverform, 14–23(–28) mm, glabrous externally or glandular, glabrous or sparsely white-villous internally abaxially, tube 7–9 mm, throat slightly inflated, 4–6 mm diam., rounded abaxially;

stamens included, pollen sacs opposite, 1–1.3 mm, sutures papillate;

staminode 8–11 mm, reaching orifice, 0.8–1.6 mm diam., tip recurved, distal 1–3 mm villous, hairs golden yellow, to 1.5 mm;

style 11–15 mm.

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.

10–15 × 8–10 mm.

8–10 × 5–7 mm.

= 16.

= 16.