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.

ascending to erect, 25–65(–70) cm, puberulent or retrorsely hairy, rarely also glandular-pubescent distally, not glaucous.

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, basal often withering by anthesis, not leathery, glabrous or retrorsely hairy to puberulent;

basal and proximal cauline 25–90 × 8–25 mm, blade spatulate, oblanceolate, or ovate, base tapered, rarely truncate, margins subentire or serrate to dentate, apex rounded to obtuse or acute;

cauline (3–)5–7 pairs, short-petiolate or sessile, (20–)30–90(–110) × (2–)5–22 mm, blade lanceolate to oblanceolate, base tapered to cordate-clasping, margins subentire or serrate to dentate, apex acute.

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, conic, 5–26(–32) cm, axis retrorsely hairy and ± glandular-pubescent, verticillasters 3–7, cymes 2–6-flowered, branches of each cyme usually elongating, of equal length, 2 per node;

proximal bracts lanceolate, 4–28 × 1–6 mm, margins entire or ± serrulate;

peduncles and pedicels spreading or ascending, puberulent or retrorsely hairy and, usually, glandular-pubescent.

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 ovate to lanceolate, 2.5–5.5 × 2–3 mm, sparsely puberulent and glandular-pubescent;

corolla white to light lavender, sometimes tinged pink, with reddish purple nectar guides, tubular, 20–28(–30) mm, glandular-pubescent externally, moderately white- or yellow-lanate internally abaxially, tube 5–7 mm, throat abruptly inflated, 4–8 mm diam., 2-ridged abaxially;

stamens included, pollen sacs opposite, navicular, 1–1.3 mm, dehiscing completely, connective splitting, sides glabrous, sutures papillate;

staminode 15–20 mm, exserted, 0.6–0.8 mm diam., tip straight to slightly recurved, distal 8–10 mm densely pilose, hairs yellow, to 1.5 mm;

style 14–20 mm.

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

8–10 × 6–7 mm, glabrous.

= 16.

= 16.