Flora of North America species comparison

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

ascending to erect, (11–)16–55(–70) 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.

basal and cauline, ± leathery or not, glabrous, not glaucous;

basal and proximal cauline 60–90(–150) × 5–12 mm, blade oblanceolate to lanceolate, base tapered, margins entire, apex acute;

cauline 3–5 pairs, sessile, 18–80 × 3–18 mm, blade lanceolate, base tapered to truncate or clasping, apex 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.

continuous or interrupted, ± secund, 5–40 cm, axis glabrous, verticillasters 4–8(–12), cymes 2- or 3(–5)-flowered, 2 per node;

proximal bracts lanceolate, 12–46(–115) × 2–15 mm, apex acuminate;

peduncles and pedicels glabrous or ± glandular, peduncles to 20 mm, pedicels 2–13(–18) mm.

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.

calyx lobes ovate to lanceolate, (4.5–)6–8(–9) × 2–3 mm, apex acuminate to caudate, glabrous or ± glandular proximally;

corolla lavender to blue, without nectar guides, ventricose, (19–)25–32 mm, glabrous externally, glabrous internally, tube 5–7 mm, throat gradually to abruptly inflated, not constricted at orifice, 7–10 mm diam., slightly 2-ridged abaxially;

stamens: longer pair slightly exserted, pollen sacs divergent, navicular-sigmoid, 1.3–2.3 mm, dehiscing incompletely, proximal 1/5–1/4 indehiscent, connective not splitting, sides sparsely to densely lanate, hairs white, to 1 mm, sutures denticulate, teeth to 0.1 mm;

staminode (8–)11–15 mm, included, 0.5–0.1(–1.2) mm diam., tip straight to recurved, distal (2–)4–5 mm sparsely to moderately villous, hairs yellow or white, to 1 mm;

style (11–)13–21 mm.

5–7 × 3–4 mm, glabrous.

7–11 × 4–6 mm.

= 16.