Flora of North America species comparison

ascending to erect, 10–45(–52) cm, glabrate or retrorsely hairy proximally, glandular-pubescent distally.

ascending to erect, (10–)13–36(–40) cm, glabrous or sparsely retrorsely hairy proximally, sometimes also sparsely glandular-pubescent.

basal and cauline, not leathery, glabrous or retrorsely hairy along midvein, especially adaxially;

basal and proximal cauline petiolate, 20–80(–105) × (2–)5–10(–13) mm, blade oblanceolate to lanceolate or linear, base tapered, margins entire or serrate, apex obtuse to acute;

cauline 3–6 pairs, sessile, 20–100(–110) × 5–15 mm, blade lanceolate to linear, base tapered to slightly clasping, margins entire or remotely dentate to remotely serrate, apex acute, rarely obtuse.

basal and cauline, not leathery, glabrous or sparsely retrorsely hairy along midvein;

basal and proximal cauline petiolate, 16–75(–120) × 6–15(–22) mm, blade oblanceolate, base tapered, margins entire or sinuate-dentate, apex obtuse to acute;

cauline 2–4 pairs, short-petiolate or sessile, 25–105 × 2–12 mm, blade lanceolate to linear, base tapered, margins entire or sinuate-dentate to dentate, apex acute, rarely obtuse.

continuous or interrupted, secund, 5–20(–24) cm, axis densely glandular-pubescent, verticillasters 2–8, cymes 2–5-flowered, 2 per node;

proximal bracts lanceolate, (9–)25–90 × (1–)3–15 mm;

peduncles and pedicels densely glandular-pubescent.

interrupted to compact, secund, 6–20 cm, axis densely glandular-pubescent, verticillasters 4–9, cymes (1–)3–7-flowered, 2 per node;

proximal bracts lanceolate, 12–70 × 2–8 mm;

peduncles and pedicels glandular-pubescent.

calyx lobes ovate to lanceolate, 8–12 × 2–3 mm, glandular-pubescent;

corolla white to lavender, pink, or violet, with magenta or violet-blue nectar guides, ventricose, 24–32(–35) mm, moderately to densely white-pilose and glandular-pubescent internally abaxially, tube 8–10 mm, throat abruptly inflated, slightly constricted at orifice, 9–15 mm diam., rounded abaxially;

stamens included, pollen sacs opposite, explanate, 1–1.2 mm, dehiscing completely, sutures smooth;

staminode 14–17 mm, prominently exserted, 0.3–0.4 mm diam., tip recurved, distal 10–14 mm lanate, hairs yellow, to 3.5 mm, and medial hairs shorter, stiffer, and retrorse;

style 17–18 mm.

calyx lobes lanceolate, 6–9 × 1.3–2.2 mm, glandular-pubescent;

corolla lavender to violet, with deep violet nectar guides, ventricose-ampliate, 14–20(–22) mm, moderately white-pilose and glandular-pubescent internally abaxially, tube 5–8 mm, throat abruptly inflated, not constricted at orifice, 7–11 mm diam., rounded abaxially;

stamens included, pollen sacs opposite, explanate, 0.8–1.2 mm, dehiscing completely, sutures smooth;

staminode 11–13 mm, prominently exserted, 0.7–0.9 mm diam., tip recurved, distal 8–9 mm densely lanate, hairs yellow, to 2 mm, and medial hairs shorter, stiffer, and retrorse;

style 11–13 mm.

10–16 × 5–7 mm.

6–11 × 5–6 mm.

= 16.