Flora of North America species comparison

ascending to erect, (16–)20–60 cm, glabrous or ± puberulent proximally, ± glaucous.

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

basal and cauline, ± leathery or not, glabrous or proximals puberulent proximally or along midveins, ± glaucous;

basal and proximal cauline (30–)50–95 × 10–15(–28) mm, blade spatulate to oblanceolate, base tapered, margins entire, usually undulate, apex rounded to obtuse;

cauline 2–4 pairs, sessile, 20–73 × 4–15 mm, blade lanceolate to elliptic, base truncate to clasping, margins crisped or undulate, 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, secund to subsecund, (4–)8–31 cm, axis glabrous, verticillasters 5–9(–12), cymes (1 or)2–5-flowered, 2 per node;

proximal bracts ovate to lanceolate, 15–50 × 3–23 mm;

peduncles and pedicels glabrous, peduncles to 18 mm, pedicels 1–7 mm.

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, 3.5–4.5 × 1.4–2 mm, apex acute to acuminate, glabrous;

corolla blue to violet, with violet nectar guides, funnelform to weakly ventricose, 14–18(–20) mm, glabrous or ± glandular externally, glabrous internally, tube 5–8 mm, throat gradually inflated, not constricted at orifice, 5–7 mm diam., rounded abaxially;

stamens: longer pair reaching orifice, pollen sacs divergent, navicular-sigmoid, 1.2–1.7 mm, dehiscing incompletely, proximal 1/4 indehiscent, connective not splitting, sides sparsely to moderately pilose, hairs white, to 0.5(–0.7) mm, sutures denticulate, teeth to 0.1 mm;

staminode: 9–11 mm, reaching orifice, 0.2–0.4 mm diam., tip straight, distal 2–6 mm sparsely pilose, hairs golden yellow, to 0.6 mm;

style 9–12 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.

6–10 × 4–5 mm.

4–7 × 3–4 mm, glabrous.

= 16.