Flora of North America species comparison

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

ascending to erect, (11–)20–60 cm, ± puberulent proximally, glabrous 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.

basal and cauline, not leathery, proximals ± puberulent, distals glabrous, not glaucous;

basal and proximal cauline (24–)40–90(–120) × 6–20(–30) mm, blade obovate, base tapered, margins entire, apex obtuse to acute;

cauline 3–5 pairs, sessile, (25–)35–70 × 8–23 mm, blade ovate to lanceolate or elliptic, base tapered to clasping, apex acute, rarely obtuse.

± 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, secund, 7–21 cm, axis glabrous, verticillasters 3–6, cymes 1- or 2(or 3)-flowered, 2 per node;

proximal bracts ovate to lanceolate, 5–28 × 2.5–24 mm;

peduncles and pedicels glabrous, peduncles to 26 mm, pedicels 1–8(–12) mm.

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 ovate, 4.5–7 × 2.5–3 mm, apex acute to acuminate, glabrous;

corolla blue to violet, without nectar guides, ventricose, (20–)24–30(–32) mm, glabrous externally, glabrous internally, tube 8–11 mm, throat gradually inflated, not constricted at orifice, 8–10(–12) mm diam., 2-ridged abaxially;

stamens: longer pair reaching orifice, pollen sacs divergent, rarely nearly opposite, sigmoid, 1.8–2.4(–2.8) mm, dehiscing incompletely, proximal 1/5 indehiscent, connective not splitting, sides sparsely hispid, hairs white, to 0.3 mm, sutures denticulate, teeth to 0.1 mm;

staminode 14–16 mm, included, 0.6–1 mm diam., tip straight to recurved, distal 0.5–1 mm moderately pilose, hairs yellow, to 0.8 mm, remaining distal 3–4 mm with scattered yellow hairs;

style 18–22 mm.

8–11 × 4–6 mm.

8–14 × 6–10 mm.

= 16.

= 16.