Flora of North America species comparison

ascending, (8–)10–40 cm, glabrous or retrorsely hairy, not glaucous.

ascending to erect, 30–70 cm, glaucous.

essentially cauline, basal usually poorly developed, not leathery, glabrous;

basal and proximal cauline 10–40(–65) × 1–6 mm, blade oblanceolate, base tapered, margins entire, apex obtuse to acute;

cauline 3–5 pairs, sessile or proximals short-petiolate, 12–60 × 2–5(–7) mm, blade oblanceolate to lanceolate or linear, base tapered, margins entire, apex acute.

basal and proximal cauline 15–90 × 8–35 mm, blade ovate, base truncate to tapered, margins entire or coarsely dentate, apex acute;

cauline 4–7 pairs, short-petiolate or sessile, 10–70 × 8–32 mm, blade cordate to triangular-lanceolate, base tapered or truncate on proximal leaves to connate-perfoliate on distal leaves, margins coarsely dentate, sometimes entire, apex acute.

interrupted, cylindric, 1–14 cm, axis glabrous or ± puberulent at axils, verticillasters (1 or)2–6, cymes (1–)3–7-flowered, 2 per node;

proximal bracts lanceolate to linear, 8–30(–45) × 1–7 mm, margins entire;

peduncles and pedicels erect, glabrous.

interrupted, secund, 10–40(–65) cm, axis glabrous or glandular-pubescent, verticillasters 6–12(–22), cymes 2–8-flowered;

proximal bracts depressed-ovate to ovate or triangular, 6–45 × 11–26 mm;

peduncles and pedicels spreading to ascending or erect, glabrous or glandular-pubescent.

calyx lobes obovate to ovate, 1–1.8 × 0.7–1.1 mm, apex truncate to cuspidate, glabrous;

corolla violet to blue or purple, without nectar guides, funnelform, 7–9(–11) mm, glabrous externally, moderately yellowish or white-pilose internally abaxially, tube 3–4 mm, throat slightly inflated, 2–3 mm diam., 2-ridged abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, explanate, 0.3–0.4(–0.5) mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth;

staminode 4–6 mm, included, 0.3–0.4 mm diam., tip straight, distal 0.5–1 mm sparsely to moderately pilose, hairs yellow, to 0.4 mm;

style 5–6 mm.

calyx lobes ovate, 3.2–6 × 1.6–4 mm, glabrous or glandular-pubescent;

corolla red to reddish purple, with or without reddish or reddish purple nectar guides, bilabiate, tubular-funnelform to slightly ventricose, 17–24 mm, glandular-pubescent externally, glabrous internally or glandular-pubescent, sometimes also pilose abaxially, tube 6–9 mm, length 1.8–2 times calyx lobes, throat gradually inflated, slightly constricted or not at orifice, 5–8 mm diam., rounded abaxially;

stamens included or longer pair reaching orifice, filaments glabrous, pollen sacs navicular or explanate, 1.2–1.7 mm, sutures smooth or denticulate, teeth to 0.1 mm;

staminode 6–11 mm, included, 0.3–0.5 mm diam., tip straight to recurved, glabrous or distal 1–6 mm pilose, hairs yellow, to 0.8 mm, proximal 1–2 mm sometimes glandular-puberulent;

style 11–14 mm, glabrous.

2.5–4 × 1.8–2.5 mm, glabrous.

6–9 × 5–7 mm, glabrous.

= 16, 32.

= 16.