Flora of North America species comparison

erect, (15–)20–55(–60) cm, glabrous.

ascending to erect, 30–60 cm, glaucous.

basal and cauline, glabrous;

basal and proximal cauline 20–100 × 4–24 mm, blade spatulate to oblanceolate, base tapered, apex rounded to obtuse or acute, sometimes mucronate;

cauline 2–5 pairs, sessile, (14–)23–95 × (4–)6–31 mm, blade lanceolate or ovate to trullate, base clasping to cordate-clasping, apex obtuse to acute.

cauline 6–12 pairs, sessile or short-petiolate, (12–)25–65 × 2–8 mm, blade lanceolate to linear, sometimes oblanceolate, base truncate or tapered, margins entire, rarely ± serrulate distally, apex obtuse to acute.

interrupted, cylindric, (5–)11–38 cm, axis glabrous, verticillasters (3 or)4–12, cymes 2- or 3(–5)-flowered;

proximal bracts trullate to ovate, 11–70 × 7–38 mm;

peduncles and pedicels glabrous.

interrupted, cylindric, 8–30 cm, axis glabrous, verticillasters 3–8, cymes 1–3-flowered;

proximal bracts lanceolate to linear, 9–28 × 2–5 mm;

peduncles and pedicels spreading to ascending, glabrous.

calyx lobes ovate, 4.5–7 × 1.5–3.5 mm, margins entire or erose, broadly scarious, glabrous or obscurely glandular along margins distally;

corolla lavender to violet or bluish, with violet or reddish purple nectar guides, tubular-salverform, 14–23(–28) mm, glabrous externally or glandular, glabrous or sparsely white-villous internally abaxially, tube 7–9 mm, throat slightly inflated, 4–6 mm diam., rounded abaxially;

stamens included, pollen sacs opposite, 1–1.3 mm, sutures papillate;

staminode 8–11 mm, reaching orifice, 0.8–1.6 mm diam., tip recurved, distal 1–3 mm villous, hairs golden yellow, to 1.5 mm;

style 11–15 mm.

calyx lobes depressed-ovate to round or ovate, 3.5–6.5 × 2.5–5 mm, glabrous;

corolla bluish lavender to lavender or light pink, with reddish purple nectar guides, strongly bilabiate, ventricose-ampliate, 22–28 mm, glabrous or glandular-pubescent externally, moderately to densely white-lanate internally abaxially, sometimes also sparsely to densely glandular-pubescent internally, tube 6–8 mm, length 1–1.5 times calyx lobes, throat abruptly inflated, constricted at orifice, 8–14 mm diam., 2-ridged abaxially;

stamens included, filaments of shorter pair glandular-puberulent proximally, pollen sacs explanate to subexplanate, 1.6–2.2 mm, sutures smooth;

staminode 15–19 mm, exserted, 0.6–0.8 mm diam., tip recurved, distal 8–9 mm moderately pilose to lanate, hairs yellow, to 2.5 mm;

proximal 5–6 mm glandular-pubescent;

style 19–24 mm, glabrous.

10–15 × 8–10 mm.

9–13 × 5–7 mm, glabrous.

= 16.

= 16.