Flora of North America species comparison

ascending or erect, 50–120 cm, glaucous.

ascending to erect, 40–90 cm, retrorsely hairy proximally, usually retrorsely hairy distally, not glaucous.

basal and proximal cauline 45–80(–100) × 15–30(–40) mm, blade obovate to ovate, oblanceolate, or lanceolate, base tapered, margins coarsely dentate, apex obtuse to acute;

cauline 6–9 pairs, sessile or proximals short-petiolate, 50–100 × (8–)20–45 mm, blade ovate to lanceolate, base cordate-clasping or tapered, margins coarsely dentate, apex acute, sometimes obtuse.

basal and cauline, basal sometimes withering by anthesis, not leathery, glabrate to puberulent;

basal and proximal cauline 40–150 × 10–26 mm, blade oval to elliptic, base tapered, margins entire or ± denticulate, apex rounded to obtuse;

cauline 7 or 8 pairs, sessile, 17–110 × 3–20 mm, blade oblanceolate to lanceolate, base tapered to clasping, margins entire or denticulate to serrulate, apex obtuse to acute.

interrupted, secund, 30–80 cm, axis glabrous or sparsely glandular-pubescent distally, verticillasters 9–19, cymes 1–5-flowered;

proximal bracts lanceolate, 10–55 × 2–30 mm;

peduncles and pedicels ascending to erect, glandular-pubescent.

interrupted, conic, 11–22 cm, axis glabrous or sparsely glandular-pubescent, verticillasters 4–6, cymes (2–)5–8-flowered, 2 per node;

proximal bracts lanceolate, 10–15 × 3–5 mm, margins entire;

peduncles and pedicels ascending to erect, glabrous or sparsely glandular-pubescent.

calyx lobes ovate, 4.2–6 × 2–3 mm, glandular-pubescent;

corolla lavender to light pink, rose pink, or light yellow, with reddish nectar guides, strongly bilabiate, ventricose, 21–32 mm, glandular-pubescent externally, glandular-pubescent internally, tube 6–12 mm, length 2–2.2 times calyx lobes, throat gradually to abruptly inflated, constricted or slightly so at orifice, 6–16 mm diam., rounded abaxially;

stamens included, filaments glabrous, pollen sacs explanate, 1.4–1.8 mm, sutures smooth;

staminode 16–19 mm, included, 0.7–0.9 mm diam., tip straight, glabrous;

style 15–20 mm, glabrous.

calyx lobes ovate, 1.5–3.5(–4) × 0.9–1.5 mm, sparsely glandular-pubescent;

corolla white, sometimes tinged lavender or purple, with reddish purple nectar guides, ventricose, 15–20(–22) mm, glandular-pubescent externally, sparsely white-pubescent internally abaxially, tube 5–6 mm, throat abruptly inflated, 5–7 mm diam., slightly 2-ridged abaxially;

stamens included, pollen sacs opposite, navicular, 0.8–1 mm, dehiscing completely, connective splitting, sides glabrous, sometimes sparsely pubescent, hairs white, to 0.2 mm, sutures papillate;

staminode 8–10 mm, reaching orifice, 0.3–0.4 mm diam., tip straight to slightly recurved, distal 3–4 mm pilose, hairs yellowish, to 1 mm;

style 10–12 mm.

8–13 × 4–7 mm, glabrous.

5–8 × 4–5 mm, glabrous.

= 16.