Flora of North America species comparison

ascending to erect, (10–)30–80 cm, glabrous, not glaucous.

basal and cauline, not leathery, glabrous;

basal and proximal cauline 30–150 × 6–40 mm, blade ovate to elliptic or oval, base tapered, margins serrate to dentate, sometimes denticulate or entire, apex obtuse to acute;

cauline 2–4 pairs, sessile or proximals short-petiolate, 11–90 × 5–50 mm, blade oblanceolate to oblong or triangular-ovate, base tapered to cordate-clasping, margins serrate to denticulate, rarely entire, apex obtuse to acute.

interrupted, sometimes continuous, cylindric, (4–)8–40 cm, axis glandular-pubescent, verticillasters 3–10, cymes (2 or)3–15-flowered, 2 per node;

proximal bracts ovate to triangular, 10–85 × 7–40 mm, margins serrate or entire;

peduncles and pedicels ascending, glandular-pubescent.

calyx lobes lanceolate, 4–6.5 × 0.9–2 mm, glandular-pubescent;

corolla light blue to lavender, purple, or violet, with violet nectar guides, ampliate, 13–18 mm, glandular-pubescent externally, glabrous or sparsely white-lanate internally abaxially, tube 5–7 mm, throat gradually inflated, 4–6 mm diam., 2-ridged abaxially;

stamens included, pollen sacs opposite, navicular, 0.8–1.2 mm, dehiscing completely, connective splitting, sides glabrous, sutures papillate;

staminode 10–13 mm, exserted, 0.2–0.4 mm diam., tip straight to slightly recurved, distal 2–6 mm glabrous or sparsely pilose, hairs yellow, to 0.6 mm;

style 10–13 mm.

5–7 × 3–4 mm, glabrous.

= 16.