Flora of North America species comparison

erect, 30–86 cm, retrorsely hairy and glandular-lanate, not glaucous.

ascending to erect, (6–)15–50 cm, retrorsely hairy, sometime glabrate, not glaucous.

basal and cauline, not leathery, retrorsely hairy, sometimes also glandular-pubescent, rarely glabrate;

basal and proximal cauline 32–130 × 7–40 mm, blade spatulate to oblanceolate, base tapered, margins entire or ± serrate, apex rounded to obtuse;

cauline 5–8 pairs, sessile or proximals short-petiolate, 16–122 × 3–23 mm, blade lanceolate, base clasping or tapered, margins ± serrate, apex acute to acuminate.

cauline, opposite, subopposite, or whorled, not leathery, glabrous or retrorsely hairy;

cauline 5–9 pairs, petiolate or sessile, (7–)10–50(–52) × (0.5–)1–20 mm, blade oblanceolate to ovate or spatulate, lanceolate to linear distally, base of proximals tapered, distals clasping, margins serrate to serrulate, rarely entire, apex rounded to obtuse, acute, or acuminate.

interrupted, narrowly conic, rarely conic, 7–26 cm, axis ± glandular-pubescent, verticillasters 3–6, cymes 2–6-flowered, usually only 1 branch of each cyme elongating, others nearly sessile or distinctly shorter, 2 per node;

proximal bracts lanceolate, 3–20 × 1–4 mm, margins entire;

peduncles and pedicels erect, sometimes ascending, ± glandular-pubescent.

interrupted, cylindric, 6–30 cm, axis ± glandular-pubescent, verticillasters 5–11, cymes 1–6-flowered, 2 per node;

proximal bracts lanceolate to linear, 6–40 × 1–4 mm, margins entire or serrate to serrulate;

peduncles and pedicels ascending to erect, glandular-pubescent.

calyx lobes ovate to lanceolate, 4–5.2 × 1.6–2.3 mm, sparsely glandular-pubescent;

corolla white to pinkish or light lavender, with dark purple nectar guides, tubular, 20–25 mm, glandular-pubescent externally, moderately white-lanate internally abaxially, tube 4–5 mm, throat abruptly inflated, 4.5–6 mm diam., 2-ridged abaxially;

stamens included, pollen sacs opposite, navicular, 1.2–1.5 mm, dehiscing completely, connective splitting, sides glabrous, sutures papillate;

staminode 11–14 mm, exserted, 0.4–0.7 mm diam., tip straight to slightly recurved, distal 8–10 mm densely pilose, hairs yellow, to 2 mm;

style 10–12 mm.

calyx lobes ovate to lanceolate, 2.3–7 × 0.6–1.9 mm, glandular-pubescent;

corolla white to ochroleucous, sometimes tinged lavender, with brownish or purple nectar guides, funnelform, 9–18 mm, glabrate to glandular-pubescent externally, glandular-pubescent internally, sometimes glabrous or glabrate adaxially, tube 4–5 mm, throat slightly inflated, 2.5–5 mm diam., slightly 2-ridged abaxially;

stamens: longer pair slightly exserted, pollen sacs opposite, explanate, 0.4–0.8 mm, dehiscing completely, connective splitting, sides glabrous, sutures papillate;

staminode 8–9 mm, exserted, 0.2–0.3 mm diam., tip straight, glabrous or distal 0.5–2.5 mm sparsely pilose or villous, hairs yellow or white, to 0.5 mm;

style 7–10 mm.

6–9 × 4.5–6 mm, glabrous.

3–5 × 2.5–4 mm, glabrous.