Flora of North America species comparison

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

erect, 25–90 cm, glabrous or sparsely retrorsely hairy, slightly glaucous or not.

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, basal sometimes withering by anthesis, not leathery, glabrous;

basal and proximal cauline 30–180(–250) × 4–38(–70) mm, blade spatulate to obovate or lanceolate, base tapered, margins entire or ± serrate or denticulate, apex rounded to obtuse or acute;

cauline 5–8 pairs, petiolate or sessile, 26–195 × 4–55 mm, blade ovate to lanceolate, base tapered to clasping, margins entire or denticulate, apex acuminate to acute.

± 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, 7–26(–34) cm, axis glabrous proximally, sparsely to densely glandular-pubescent distally, verticillasters (2 or)3–6, cymes (3–)5–12(–18)-flowered, 2 per node;

proximal bracts lanceolate to linear, 9–105 × 1–40 mm, margins entire, sometimes serrulate;

peduncles and pedicels spreading to ascending, sparsely 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 ovate, sometimes lanceolate, 4–8 × 2–3 mm, apex acute to acuminate, glandular-pubescent;

corolla white, sometimes tinged lavender, with reddish purple nectar guides, ventricose, (17–)20–30 mm, glandular-pubescent externally, sparsely to moderately white-pubescent internally abaxially, tube 6–9 mm, throat abruptly inflated, 8–12 mm diam., slightly 2-ridged abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, navicular, 1.4–1.7 mm, dehiscing completely, connective splitting, sides sparsely pubescent, hairs white or purplish, to 0.6 mm, rarely glabrous, sutures papillate;

staminode 13–17 mm, reaching orifice, 0.3–0.4 mm diam., tip straight to slightly recurved, distal 6–8 mm sparsely to moderately villous, hairs yellowish, to 1.5(–2) mm;

style 13–18 mm.

8–11 × 4–6 mm.

8–14 × 4–6 mm, glabrous.

= 16.

= 96.