Flora of North America species comparison

glabrous or retrorsely hairy, sometimes glandular-pubescent distally, glaucous or not.

ascending to erect, 4–10(–17) cm, retrorsely hairy or puberulent, not glaucous.

cauline, opposite, rarely subopposite (P. lyallii), leathery, sometimes not (P. lyallii, P. personatus), glabrous or hairy, glaucous or not;

cauline petiolate, short-petiolate, or sessile, blade round, orbiculate, ovate, obovate, lanceolate, oblanceolate, spatulate, elliptic, or oblong, rarely linear, margins entire or toothed.

persistent, 5–10 pairs, distals usually distinctly smaller than proximals, short-petiolate or sessile, (5–)10–20(–30) × 4–11 mm, blade elliptic to orbiculate, ovate, or spatulate, base tapered, margins entire or serrulate, apex rounded to obtuse or acute, glabrous or obscurely puberulent, not glaucous.

continuous or interrupted, ± secund, rarely cylindric or conic, axis hairy, rarely glabrous, cymes 2 per node;

peduncles and pedicels spreading or ascending to erect.

continuous, ± secund, 1–6 cm, axis retrorsely hairy proximally, retrorsely hairy and glandular-pubescent distally, verticillasters (1 or)2–7, cymes 1-flowered;

proximal bracts round to ovate or lanceolate, 3–12 × 1–6 mm, margins entire;

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

calyx lobes: margins entire or erose, ± scarious or herbaceous, glandular-pubescent, rarely glabrous or inconspicuously glandular;

corolla lilac, lavender, blue, violet, purple, pink, red, scarlet, or white, bilaterally symmetric, strongly bilabiate, personate or not, funnelform, rarely tubular-funnelform, glabrous externally, rarely glandular-pubescent, hairy internally abaxially, rarely glabrous, throat gradually inflated, not constricted at orifice, 2-ridged abaxially;

stamens included or longer pair exserted, filaments glabrous, pollen sacs opposite;

staminode 0.1–0.4 mm diam., tip straight to recurved, glabrous or distal 10–50% hairy, hairs to 1.5 mm;

style glabrous.

calyx lobes lanceolate to linear, 7–12(–14) × 2.5–4.3 mm, glandular-pubescent;

corolla lavender to bluish lavender, violet, or purple, essentially unlined internally but abaxial ridges usually lavender or white, nearly personate, funnelform, 20–45 mm, glabrous externally, sparsely to moderately white-villous internally abaxially, tube (4–)6–12 mm, throat 7–12 mm diam.;

stamens included, pollen sacs 0.9–1.6 mm;

staminode 7–14 mm, slightly flattened distally, 0.1–0.2 mm diam., tip straight, distal 4–7 mm sparsely to densely villous, hairs whitish, to 1 mm;

style 19–26 mm.

glabrous.

8–13 × 5–8 mm.

brown, 0.8–4 mm.