Flora of North America species comparison

ascending to erect, 20–50(–65) cm, glabrous or retrorsely hairy, not glaucous.

ascending to erect, 6–30 cm, pubescent, sometimes retrorsely hairy proximally and glandular-pubescent distally, not glaucous.

basal and cauline, basal often poorly developed, not leathery, glabrous;

basal and proximal cauline 20–75 × 2–5(–7) mm, blade narrowly elliptic to linear, base tapered, margins entire, apex obtuse to acute;

cauline 5–8 pairs, sessile or proximals long-petiolate, 15–75 × 2–8 mm, blade lanceolate to linear, base tapered, margins entire, apex acute.

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.

interrupted or continuous, cylindric, 3–25 cm, axis glandular-pubescent, verticillasters 2–6(–10), cymes 1–7-flowered, 2 per node;

proximal bracts lanceolate, 6–55 × 1–8 mm, margins entire;

peduncles and pedicels erect, 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 obovate to ovate or lanceolate, 1.5–3 × 0.7–1.5 mm, glandular-pubescent;

corolla violet to light blue, pink, or light purple, with or without pink or purple nectar guides, tubular to tubular-funnelform, 8–10 mm, glandular-pubescent externally, moderately yellow-pilose internally abaxially, tube 3–4 mm, throat slightly inflated, 2–3 mm diam., slightly 2-ridged abaxially;

stamens included, pollen sacs opposite, navicular to subexplanate, 0.4–0.5 mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth;

staminode 4–6 mm, included, 0.3–0.4 mm diam., tip straight, distal 0.3–0.5 mm sparsely pilose, hairs yellow, to 0.4 mm;

style 7–8 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.

3.5–5 × 2–3 mm, glabrous.

10–14 × 5–7 mm.

= 32.