Flora of North America species comparison

20–90 cm, retrorsely hairy, sometimes glabrescent.

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

glabrous or retrorsely hairy;

basal and proximal cauline 16–80 × 3–10 mm, blade oblanceolate to lanceolate, base tapered, margins entire, apex obtuse to acute;

cauline 6–15(–20) pairs, 45–150 × 1–6 mm, blade linear, base tapered, apex acute to acuminate.

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.

cylindric to ± secund, 10–35 cm, axis glabrous, verticillasters (2–)5–8, cymes (1 or)2–4(or 5)-flowered;

proximal bracts linear, 8–30(–80) × 0.5–2 mm;

peduncles and pedicels glabrous or pedicels rarely 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 elliptic to ovate, 4.2–7(–8.5) × 2–2.6(–3.5) mm, glabrous, rarely glandular-pubescent;

corolla violet to blue, lavender, or purple, lined internally abaxially with reddish purple nectar guides, ventricose, 23–37 mm, glabrous internally, tube 7–10 mm, throat abruptly inflated, 9–10 mm diam., slightly 2-ridged abaxially;

stamens included, pollen sacs parallel to divergent, 1.6–1.8 mm, sutures denticulate, teeth to 0.2 mm;

staminode 20–23 mm, exserted, 1.8–2.6 mm diam.;

style 20–24 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.

9–15 × 6–9 mm.

6–9(–14) × 4–6 mm.