Flora of North America species comparison

ascending to erect, (8–)20–65(–100) cm, glabrous or ± puberulent proximally, ± puberulent or glandular-pubescent distally, not glaucous.

erect, (13–)19–42 cm, glabrous.

basal and cauline, not leathery, glabrous;

basal and proximal cauline 40–90(–130) × (5–)10–30(–75) mm, blade ovate to lanceolate or elliptic, base tapered to cuneate, margins entire or ± repand, denticulate, or dentate, apex obtuse to acute;

cauline 2–5 pairs, short-petiolate or sessile, 25–60(–85) × 3–15(–25) mm, blade lanceolate to oblanceolate, base tapered to clasping or cordate-clasping, margins entire, sometimes ± repand to denticulate, apex obtuse to acute.

basal and cauline, glabrous;

basal and proximal cauline 13–57 × 4–19 mm, blade spatulate to oblanceolate, base tapered, apex mucronate, sometimes rounded to obtuse;

cauline 3–7 pairs, sessile, 9–30 × 6–15 mm, blade oblanceolate to ovate, base clasping to cordate-clasping, apex acute to acuminate, sometimes mucronate.

interrupted or continuous, secund, (2–)5–35 cm, axis sparsely to densely glandular-pubescent, verticillasters 2–5(–7), cymes 2–4-flowered, 2 per node;

proximal bracts lanceolate, 11–85 × 1–18 mm, margins entire or ± repand proximally;

peduncles and pedicels ascending to erect, glandular-pubescent.

interrupted or continuous, cylindric, 10–16 cm, axis glabrous, verticillasters (6–)8–12, cymes 2–7-flowered, proximal bracts orbiculate to ovate, 11–18 × 6–14 mm;

peduncles and pedicels glabrous.

calyx lobes lanceolate, 7–10 × 1–2.2 mm, glandular-pubescent;

corolla brownish purple to bluish violet, sometimes ochroleucous, lavender, or white, with alternating white or lavender and purple nectar guides in dark-colored forms, with lavender nectar guides in light-colored forms, ventricose to ventricose-ampliate, 20–27(–30) mm, glandular-pubescent externally, sparsely white-villous internally abaxially, tube 5–8 mm, throat abruptly inflated, 8–10 mm diam., 2-ridged abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, explanate, 1–1.4 mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth;

staminode 12–15 mm, reaching orifice or exserted, 0.6–1.1 mm diam., tip straight to slightly recurved, distal 1–3 mm sparsely to densely villous, hairs yellow, to 1 mm;

style 12–16 mm.

calyx lobes lanceolate, 4–7 × 1.1–1.9 mm, margins erose, broadly scarious, glabrous;

corolla lavender to lavender-blue, without nectar guides, funnelform, nearly rotate, 11–14 mm, glabrous externally or glandular, glabrous internally, tube 6.5–8 mm, throat gradually inflated, 4–5 mm diam., rounded abaxially;

stamens: 4 prominently exserted (4–5 mm) beyond limb, pollen sacs parallel, 1.2–1.5 mm, sutures smooth;

staminode 6–7 mm, reaching orifice or exserted (adaxially), 0.4–0.5 mm diam., tip recurved, distal 1–2 mm densely villous, hairs golden yellow, to 0.8 mm;

style 12–14 mm.

6–9 × 4–5 mm, glandular-puberulent distally.

5–6 × 4–5 mm.

= 16.