Flora of North America species comparison

ascending to erect, 15–55(–82) cm, glabrous.

ascending or erect, 8–40(–60) cm, glabrate, retrorsely hairy, or glandular-pubescent, not glaucous.

basal and cauline, glabrous;

basal and proximal cauline 19–116(–150) × 3–23(–31) mm, blade spatulate to oblanceolate, base tapered, apex rounded to obtuse, acute, or mucronate;

cauline 3–9 pairs, sessile, 20–95 × 10–30 mm, blade ovate to lanceolate, base clasping to cordate-clasping, apex acute.

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

basal and proximal cauline 25–100(–150) × (4–)9–20(–34) mm, blade elliptic to ovate, base tapered, margins ± serrate to dentate, apex obtuse to acute;

cauline 2–5 pairs, sessile, 11–60 × 5–25(–30) mm, blade triangular-ovate to lanceolate, base truncate to cordate-clasping, margins serrate to dentate, apex acute, rarely obtuse.

interrupted, cylindric, (4–)10–35(–57) cm, axis glabrous, verticillasters 4–20(–35), cymes (2 or)3–5(–11)-flowered;

proximal bracts orbiculate to ovate, 15–70 × 5–31 mm;

peduncles and pedicels glabrous.

interrupted, cylindric, 4–28 cm, axis densely glandular-pubescent, rarely sparsely glandular-pubescent, verticillasters 3–8, cymes 3–11-flowered, 2 per node;

proximal bracts ovate to lanceolate, 8–58 × 4–25 mm, margins serrate, sometimes entire;

peduncles and pedicels ascending to erect, densely glandular-pubescent.

calyx lobes ovate, 3.5–6 × 1.5–2.5 mm, margins entire or erose, broadly scarious, glabrous;

corolla lavender to bluish lavender or pinkish blue, with reddish or reddish purple nectar guides, tubular-funnelform, (12–)14–20 mm, glabrous externally, glabrous internally, tube 5–7 mm, throat gradually inflated, 4–6 mm diam., rounded abaxially;

stamens included, pollen sacs opposite, 0.8–1.2 mm, sutures papillate;

staminode 7–9 mm, included or reaching orifice, 0.8–0.9 mm diam., tip recurved, distal 3–5 mm moderately to densely villous, hairs golden yellow, to 1.5 mm;

style 9–11 mm.

calyx lobes ovate to lanceolate, 2.5–4.5(–6) × 0.9–1.5 mm, glandular-pubescent;

corolla blue to lavender, purple, or violet, with purple nectar guides, funnelform, 11–16 mm, glandular-pubescent externally, sparsely white-villous internally abaxially, tube 4–5 mm, throat gradually inflated, 3–6 mm diam., rounded abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, navicular to subexplanate, 0.6–0.8 mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth;

staminode 7–9 mm, included or slightly exserted, 0.2–0.3 mm diam., tip recurved, distal 0.5–1 mm densely pilose, hairs yellow, to 0.8 mm;

style 8–10 mm.

12–18(–20) × 7–11 mm.

4–7 × 3–4 mm, glabrous.

= 16.

= 16.