Flora of North America species comparison

20–90 cm, retrorsely hairy, sometimes glabrescent.

ascending to erect, 4–25 cm, retrorsely ± hairy proximally, glandular-pubescent distally.

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, glabrous abaxially, retrorsely hairy adaxially, usually only along midvein on distal caulines;

basal and proximal cauline petiolate, 12–73 × 2–9 mm, blade spatulate to oblanceolate, base tapered, margins entire or obscurely dentate, apex rounded to obtuse or acute;

cauline 3–5 pairs, sessile, 11–48 × 2–6 mm, blade lanceolate, base clasping, margins entire or dentate proximally, apex acute to acuminate.

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.

interrupted or continuous, cylindric, 2–7 cm, axis glandular-pubescent, verticillasters 3–7, cymes 3–5-flowered, 2 per node;

proximal bracts lanceolate, 7–28 × 2–6 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, 4.8–7.5 × 0.9–1.9 mm, glandular-pubescent;

corolla blue to bluish lavender or light purple, with purple nectar guides, funnelform, 14–20 mm, yellow-lanate internally abaxially, tube 4–6 mm, throat gradually inflated, not constricted at orifice, 5–7 mm diam., rounded or slightly 2-ridged abaxially;

stamens: longer pair reaching orifice or exserted, pollen sacs parallel, navicular, 1.3–1.6 mm, dehiscing completely, sutures papillate;

staminode 7–9 mm, included or reaching orifice, 0.7–0.9 mm diam., tip straight to recurved, distal 5–6 mm sparsely to densely pilose, hairs golden yellow, to 2 mm;

style 8–10 mm.

9–15 × 6–9 mm.

6–10 × 3–5.5 mm.