Flora of North America species comparison

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

ascending to erect, 13–50 cm, retrorsely hairy, hairs pointed, not glaucous.

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.

essentially cauline, opposite, retrorsely hairy, hairs pointed, sometimes glabrate, not glaucous;

cauline 5–8 pairs, petiolate or sessile, 22–80 × (1–)2–9 mm, blade oblanceolate to lanceolate or linear, base tapered, margins entire, apex obtuse to acute.

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.

interrupted, cylindric, 4–14 cm, axis glandular-pubescent, verticillasters (3 or)4–8(–12), cymes 1–5-flowered, 2 per node;

proximal bracts lanceolate, 5–40 × 1–4 mm;

peduncles and pedicels ascending to erect, glandular-pubescent.

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.

calyx lobes ovate to lanceolate, 3.8–7 × 1.4–2.6 mm, glandular-pubescent;

corolla blue to violet or purple, without nectar guides, funnelform, 15–25 mm, glandular-pubescent externally, glabrous internally, tube 6–8 mm, throat gradually inflated, 6–9 mm diam., slightly 2-ridged abaxially;

stamens included, filaments glabrous, pollen sacs parallel, 1.5–2 mm, distal 1/2 indehiscent, sides hispidulous, hairs white, to 0.5 mm near filament attachment, sutures denticulate, teeth to 0.2 mm;

staminode 12–15 mm, reaching orifice, 0.5–1 mm diam., glabrous;

style 13–17 mm.

4–7 × 3–4 mm, glabrous.

(5.5–)7–9 × (3–)4–6 mm.

= 16.