Flora of North America species comparison

decumbent, ascending, or erect, 5–65 cm, glabrous or retrorsely hairy, sometimes also glandular-pubescent distally, not glaucous.

ascending to erect, 7–25 cm, retrorsely hairy or puberulent, not glaucous.

basal and cauline, not leathery, glabrous;

basal and proximal cauline 5–140 × 3–20 mm, blade spatulate to oblanceolate or elliptic, base tapered, margins entire, apex rounded to obtuse or acute;

cauline 2–5 pairs, short-petiolate or sessile, 10–60(–70) × 1–14 mm, blade oblong to oblanceolate or lanceolate, base tapered to clasping, margins entire, apex obtuse to acute.

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

basal and proximal cauline 15–80 × 0.8–2 mm, blade linear, base tapered, margins entire, apex obtuse to acute;

cauline 1–3 pairs, sessile, 10–75 × 0.5–1.5 mm, blade linear, base tapered, apex acute.

interrupted, cylindric, 1–12 cm, axis ± glandular-pubescent, verticillasters 1–6, cymes (1 or)2–6-flowered, 2 per node;

proximal bracts lanceolate, 4–35 × 1–6 mm, margins entire;

peduncles and pedicels erect, ± glandular-pubescent.

continuous, secund, 3–10 cm, axis glandular-pubescent, verticillasters 2–6, cymes 1- or 2(–4)-flowered, 2 per node;

proximal bracts linear, 10–56 × 0.5–1.5 mm;

peduncles and pedicels glandular-pubescent.

calyx lobes oblong to lanceolate, 4–6 × 0.7–1.2 mm, glandular-pubescent;

corolla lavender to blue, violet, or purple, essentially without nectar guides, tubular-funnelform, 10–16 mm, glandular-pubescent externally, moderately yellow-pilose to yellow-lanate internally abaxially, tube 5–7 mm, throat slightly inflated, 3–5 mm diam., prominently 2-ridged abaxially;

stamens: longer pair reaching orifice or slightly exserted, pollen sacs opposite, navicular, 0.6–0.8(–1) mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth;

staminode 6–9 mm, included, 0.3–0.6 mm diam., tip straight to recurved, glabrous or distal 1–3 mm sparsely to moderately pilose, hairs yellow, to 0.5 mm;

style 9–12 mm.

calyx lobes lanceolate, 4.5–5.5 × 1.8–2.5 mm, glabrous to sparsely glandular;

corolla blue to bluish violet, with reddish purple nectar guides, funnelform, 13–16 mm, glabrous externally, glabrous internally, tube 5–6 mm, throat gradually inflated, not constricted at orifice, 4.5–5.5 mm diam., rounded abaxially;

stamens included, pollen sacs divergent to opposite, navicular, 1.1–1.5 mm, dehiscing incompletely, connective not splitting, sides moderately hirsute, hairs white, to 0.5 mm, sutures denticulate, teeth to 0.1 mm;

staminode 8–9 mm, included, 0.9–1.1 mm diam., tip straight, distal 6–7 mm densely pubescent, hairs yellowish orange, to 0.9 mm;

style 8–10 mm.

4–6 × 2.5–3.5 mm, glabrous.

6–9(–14) × 4–6 mm.