Flora of North America species comparison

ascending to erect, 43–140 cm, glaucous.

ascending to erect, (15–)30–70 cm, glabrous, not glaucous.

basal and proximal cauline (28–)52–120(–145) × (5–)25–50(–60) mm, blade ovate, base tapered, margins coarsely dentate, apex obtuse to acute;

cauline 5–8 pairs, sessile or connate-perfoliate, 25–130 × 7–45 mm, blade ovate to triangular, base of distals auriculate-clasping or connate-perfoliate, margins coarsely dentate, distals sometimes entire, apex acute.

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

basal and proximal cauline 80–140(–180) × (10–)15–35(–40) mm, blade ovate to elliptic, base tapered, margins entire, apex obtuse to acute;

cauline 5–7 pairs, sessile, (28–)40–80(–110) × 6–30(–42) mm, blade ovate to lanceolate, base tapered to cordate-clasping, apex acute.

interrupted, rarely continuous, secund, 7–63 cm, axis glabrous or glandular-pubescent, verticillasters (4–)7–17, cymes (1 or)2–5-flowered;

proximal bracts ovate to lanceolate, 8–40 × 4–38 mm;

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

continuous, sometimes interrupted proximally, cylindric, (3–)8–32 cm, axis glabrous, verticillasters 4–10(–16), cymes 2–4(–8)-flowered, 2 per node;

proximal bracts ovate to lanceolate, 12–80 × 2–35 mm;

peduncles and pedicels glabrous.

calyx lobes ovate, (3.4–)4.2–6(–7.5) × 1.9–3.6 mm, glabrous or glandular-pubescent;

corolla pale pink to white or pinkish lavender, with reddish purple nectar guides, strongly bilabiate, ventricose-ampliate, 25–38 mm, glandular-pubescent externally, glandular-pubescent internally, sometimes also sparsely white-lanate abaxially, tube 4–8 mm, length 1–1.4 times calyx lobes, throat abruptly inflated, constricted at orifice, 12–21 mm diam., rounded abaxially;

stamens included or longer pair reaching orifice, filaments of shorter pair glandular-puberulent proximally, pollen sacs navicular, 1.6–2.4 mm, sutures smooth;

staminode 25–30 mm, exserted, 0.9–1.1 mm diam., tip strongly recurved to coiled, distal 8–10 mm, and especially tip, moderately to densely lanate, hairs yellow, to 3.5 mm, proximal 6–8 mm glandular-puberulent;

style 19–23 mm, glabrous or sparsely glandular-pubescent proximally.

calyx lobes lanceolate, 5–8.5(–10) × 1–2 mm, glabrous;

corolla blue to violet, without nectar guides, ventricose, 18–22 mm, glabrous externally, glabrous internally, tube 6–9 mm, throat gradually inflated, not constricted at orifice, 7–10 mm diam., slightly 2-ridged abaxially;

stamens: longer pair reaching orifice or slightly exserted, pollen sacs opposite, navicular, 1.2–1.9 mm, dehiscing incompletely, connective not splitting, sides glabrous, sutures denticulate, teeth to 0.1 mm;

staminode: 13–15 mm, included, 0.5–0.9 mm diam., tip straight, distal 2–3 mm sparsely pilose, sometimes glabrous, hairs yellow, to 0.5 mm;

style 13–17 mm.

11–16 × 6–8 mm, sparsely glandular-pubescent distally.

8–15 × 5–8 mm.

= 16.