Flora of North America species comparison

ascending to erect, 10–27 cm, retrorsely hairy or puberulent, not glaucous.

ascending to erect, 30–57 cm, puberulent or retrorsely hairy, rarely glandular-pubescent distally, not glaucous.

persistent, 6–9 pairs, distals usually distinctly smaller than proximals, short-petiolate or sessile, 15–55 × 4–16 mm, blade elliptic, base tapered, margins subentire or serrate, apex rounded to obtuse or acute, glabrous, ± glaucous.

deciduous, 3–6(or 7) pairs, petiolate or sessile, (6–)30–65(–95) × (5–)12–50 mm, blade ovate to oblong or lanceolate, base truncate to cordate, margins entire or ± denticulate, apex obtuse to acute, puberulent to pubescent abaxially, glabrate adaxially, glaucescent.

± interrupted, secund, 5–14 cm, axis retrorsely hairy proximally, retrorsely hairy and glandular-pubescent distally, verticillasters 3–7, cymes 1-flowered;

proximal bracts ovate to lanceolate, 6–18 × 3–12 mm, margins serrate, sometimes entire;

peduncles and pedicels ascending to erect, glandular-pubescent, sometimes also puberulent.

interrupted, conic, 7–33 cm, axis sparsely to densely glandular-pubescent, verticillasters (2 or)3–5(–7), cymes 2–5(–7)-flowered;

proximal bracts ovate to lanceolate, 7–28(–72) × 3–17(–45) mm;

peduncles and pedicels ascending to erect, glandular-pubescent.

calyx lobes ovate to lanceolate, 8–14 × 2–3.1 mm, glandular-pubescent;

corolla purple to violet, essentially unlined internally but abaxial ridges usually light purple or white, not personate, funnelform, (25–)30–38 mm, glabrous externally, sparsely white-lanate internally abaxially, tube 6–8 mm, throat 9–10 mm diam.;

stamens included, pollen sacs 1.5–1.7 mm;

staminode 11–13 mm, essentially terete distally, 0.1 mm diam., tip straight, distal 4–6 mm moderately to densely villous, hairs white or yellowish, to 1.5 mm;

style 25–29 mm.

calyx lobes lanceolate, 3.8–6 × 1.1–2 mm, glandular-pubescent;

corolla lavender to purple or white, lined internally with violet nectar guides, personate, tubular-funnelform, 20–26 mm, glabrous or sparsely glandular-pubescent externally, moderately to densely white-villous internally, tube 7–8 mm, throat 6–8 mm diam.;

stamens included, pollen sacs 0.8–1.1 mm, glabrous;

staminode 4–5 mm, flattened distally, 0.1–0.2 mm diam., tip straight, distal 3–4 mm densely villous, hairs yellow, to 1 mm;

style 17–19 mm.

8–11 × 4–6 mm.

6–9 × 4–5 mm.

= 16.