Flora of North America species comparison

20–90 cm, retrorsely hairy, sometimes glabrescent.

ascending to erect, 6–30 cm, pubescent, sometimes retrorsely hairy proximally and glandular-pubescent distally, 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.

deciduous, 4–7 pairs, distals seldom distinctly smaller than proximals, short-petiolate or sessile, 9–35(–56) × 7–17(–28) mm, blade obovate to oblanceolate, ovate, lanceolate, or elliptic, base tapered, cuneate, or cordate-clasping, margins entire, subentire, serrate, or dentate, apex obtuse to acute, glabrous, puberulent, or puberulent and glandular-pubescent, glaucous or not.

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, 1–7 cm, axis sparsely to moderately glandular-pubescent, sometimes also pubescent proximally, verticillasters 1–5, cymes 1-flowered;

proximal bracts ovate to lanceolate, 6–28 × 3–22 mm;

peduncles and pedicels ascending to erect, 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 to linear, 8–15 × 1.8–3.5 mm, glandular-pubescent;

corolla lavender, blue, or violet, unlined internally or lined with faint lavender or blue nectar guides abaxially, not personate, funnelform, 26–33(–39) mm, glabrous externally, moderately to densely white-lanate internally abaxially, tube 7–9 mm, throat 8–10 mm diam.;

stamens included, pollen sacs 1.1–1.6 mm;

staminode 11–15 mm, slightly flattened distally, 0.1–0.3 mm diam., tip straight to recurved, glabrous or distal 3–6 mm pubescent, hairs white, to 1.4 mm;

style 25–30 mm.

9–15 × 6–9 mm.

10–14 × 5–7 mm.