Flora of North America species comparison

ascending to erect, 10–30(–35) cm, retrorsely hairy proximally, glandular-pubescent distally.

ascending to erect, 2–6(–8) cm, pubescent or densely retrorsely hairy.

basal and cauline, not leathery, glabrous, puberulent, or retrorsely hairy;

basal and proximal cauline petiolate, (15–)30–60(–100) × (1–)2–5(–7) mm, blade lanceolate to linear, base tapered, margins entire, apex obtuse to acute;

cauline 2–6 pairs, sessile, (25–)40–80 × 2–7 mm, blade lanceolate to linear, base tapered to slightly clasping, margins entire or obscurely denticulate, apex acute to acuminate.

basal and cauline, not leathery, retrorsely hairy;

basal and proximal cauline petiolate, 8–30 × 2–9 mm, blade spatulate to oblanceolate, base tapered, margins entire, apex rounded to obtuse or acute;

cauline (0 or)1–3 pairs, sessile, 14–23 × 1–4 mm, blade oblanceolate to linear, not arcuate, base tapered, margins entire, apex acute.

continuous or interrupted, cylindric or slightly secund, (5–)7–23 cm, axis glandular-pubescent, verticillasters 3–8, cymes 2–4-flowered, 2 per node;

proximal bracts lanceolate to linear, 18–100 × 2–12 mm;

peduncles and pedicels glandular-pubescent.

continuous, cylindric, 1–4 cm, axis puberulent or retrorsely hairy, verticillasters 1–5, cymes (1 or)2-flowered, 2 per node;

proximal bracts oblanceolate to lanceolate or linear, 13–24 × 1–4 mm;

peduncles and pedicels retrorsely hairy, sometimes sparsely glandular-pubescent.

calyx lobes ovate to lanceolate, (6–)7–9 × 1–2 mm, densely glandular-pubescent;

corolla violet to lilac or pinkish blue, with magenta or violet nectar guides, weakly bilabiate, tubular-funnelform, (16–)18–22(–24) mm, moderately white-pilose internally abaxially, tube 4–6 mm, throat gradually inflated, not constricted at orifice, 7–9 mm diam., rounded abaxially;

stamens included, pollen sacs divergent, navicular, 1.2–1.5 mm, dehiscing incompletely, connective not splitting, sutures papillate;

staminode 13–16 mm, reaching orifice or exserted, 0.6–0.9 mm diam., tip recurved, distal 10–15 mm moderately to densely villous, hairs orangish, to 2.5 mm;

style 11–14 mm.

calyx lobes lanceolate, 5–8.5 × 1–2.1 mm, retrorsely hairy, sometimes sparsely glandular-pubescent;

corolla light blue to blue, lavender, or violet, without nectar guides, funnelform, 14–20 mm, glabrous or sparsely white-lanate internally abaxially, tube 6–8 mm, throat gradually inflated, not constricted at orifice, 4–7 mm diam., slightly 2-ridged abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, navicular, 0.9–1.2 mm, dehiscing completely, sutures papillate;

staminode 9–11 mm, included or reaching orifice, 0.5–1.1 mm diam., tip straight to recurved, distal 5–7 mm moderately pubescent to lanate, hairs yellow or yellow-orange, to 1.5 mm;

style 9–12 mm.

(6–)8–10 × 3–4 mm.

4–6.5 × 4–5 mm.

= 16.