Flora of North America species comparison

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

decumbent to ascending, (15–)20–48 cm, glabrous.

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.

essentially cauline, basal absent or reduced, glabrous;

basal and proximal cauline (25–)55–130(–175) × 3–25 mm, blade linear to lanceolate, base tapered, apex acute to acuminate;

cauline 2–10 pairs, sessile, 60–110(–120) × 7–30 mm, blade lanceolate to linear, base clasping, apex acuminate to long-acuminate.

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.

continuous, cylindric, (2–)6–21(–34) cm, axis glabrous, verticillasters (2–)6–10(–17), cymes 1–8-flowered;

proximal bracts ovate, 58–120 × 20–45 mm;

peduncles and pedicels glabrous.

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 to linear, 8–13 × 1–3 mm, margins entire or erose, herbaceous or scarious, glabrous;

corolla lavender to bluish, usually with magenta nectar guides, ampliate, 21–28 mm, glabrous externally, glabrous internally, tube 7–9 mm, throat abruptly inflated, 9–11 mm diam., rounded abaxially;

stamens included, pollen sacs opposite, 1.1–2 mm, sutures papillate;

staminode 13–16 mm, included, 1.2–3 mm diam., tip recurved, distal 0.1–5 mm sparsely to densely villous, hairs golden yellow, to 1 mm, rarely glabrous;

style 13–23 mm.

10–16 × 5–7 mm.

8–12 × 5–9 mm.

= 16.

= 16.