Flora of North America species comparison

herbaceous.

ascending to erect, (15–)20–50 cm, retrorsely hairy and glandular-pubescent, 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 or sparsely, rarely densely, puberulent;

basal and proximal cauline 25–75 × 4–15 mm, blade ovate to oblanceolate or lanceolate, base tapered, margins subentire or ± serrate, apex obtuse to acute;

cauline 4–7 pairs, sessile, 25–80(–90) × (2–)4–10(–15) mm, blade lanceolate to linear, base truncate to clasping, margins entire or serrulate to serrate, apex acute to acuminate.

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, sometimes continuous, cylindric, (3–)5–17(–21) cm, axis glandular-pubescent, verticillasters (2 or)3–5(–7), cymes 2–6-flowered, 2 per node;

proximal bracts lanceolate, 5–95 × 1–12 mm, margins entire or serrulate, rarely serrate;

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 ovate to lanceolate, 4–6 × 1.5–2 mm, glandular-pubescent;

corolla light lavender to lavender, with violet nectar guides, tubular, 14–22 mm, glandular-pubescent externally, moderately white-pilose internally abaxially, tube 4–6 mm, throat slightly inflated, 4–6 mm diam., prominently 2-ridged abaxially;

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

staminode 11–12 mm, reaching orifice, 0.4–0.5 mm diam., tip slightly recurved, distal 7–9 mm densely villous, hairs golden yellow, to 1.5 mm;

style 9–12 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.

6–8 × 3–4 mm, glabrous.

8–10 × 6–7 mm, glabrous.

= 16.

= 16.