Flora of North America species comparison

ascending to erect, 5–18 cm, puberulent to retrorsely hairy, usually in lines proximally, not glaucous.

32–75 cm.

deciduous, sometimes persistent, 2–6 pairs, distals seldom distinctly smaller than proximals, petiolate or sessile, (5–)10–42 × 4–15 mm, blade obovate to ovate, elliptic, or lanceolate, base tapered to clasping, margins ± crenulate-serrulate, apex obtuse to acute, glabrous, not glaucous.

cauline 7–11 pairs, 16–50 × 10–28 mm, base tapered to truncate, apex obtuse to acute.

continuous, cylindric to ± secund, 1–4 cm, axis glandular-pubescent, verticillasters 2–4, cymes 1-flowered;

proximal bracts ovate to lanceolate, (4–)8–25 × 3–17 mm;

peduncles and pedicels ascending to erect, glandular-pubescent.

6–18 cm, verticillasters 2–4, cymes (1 or)2 or 3(or 4)-flowered;

proximal bracts ovate to lanceolate, 4–10 × 3–10 mm;

peduncles and pedicels retrorsely hairy.

calyx lobes lanceolate, 8–15 × (1.8–)2.5–3.7 mm, glandular-pubescent;

corolla violet to purple, unlined internally but abaxial ridges usually light violet to whitish, not personate, funnelform, 27–40 mm, glabrous externally, sparsely to moderately white-lanate internally abaxially, tube 5–8 mm, throat 8–11 mm diam.;

stamens included, pollen sacs 1.1–1.3 mm;

staminode 9–16 mm, flattened distally, 0.3–0.4 mm diam., tip straight, glabrous or distal 1–3(–13) mm sparsely to moderately villous, hairs yellow, to 1.3 mm;

style 25–28 mm.

calyx lobes ovate to lanceolate, 3–5 × 1.3–2.2 mm;

corolla with lavender or violet nectar guides, 20–25 mm, sparsely white-lanate internally abaxially, tube 6–7 mm, throat 8–10 mm diam.;

pollen sacs 1.1–1.4 mm;

staminode 17–19 mm, distal 2–4 mm sparsely villous, hairs white, to 2 mm;

style 14–15 mm.

8–11 × 6–8 mm.

7–9 × 4–7 mm.

= 16.