Flora of North America species comparison

decumbent to ascending, 7–25(–30) cm, retrorsely hairy, hairs pointed, often densely so, not glaucous.

ascending to erect, 30–60 cm, glaucous.

cauline, opposite, retrorsely hairy or puberulent, hairs pointed, not glaucous;

cauline (2 or)3–6 pairs, short-petiolate or sessile, 17–50(–80) × 2–7(–10) mm, blade oblanceolate to linear, base tapered, margins entire, 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.

continuous, cylindric, 3–15 cm, axis retrorsely hairy or puberulent, verticillasters 4–10, cymes (1 or)2–4-flowered, 2 per node;

proximal bracts oblanceolate to lanceolate, 11–40 × 2–8 mm;

peduncles and pedicels ascending to erect, peduncles puberulent, pedicels puberulent and glandular-pubescent, at least distally.

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 lanceolate, 4–6 × 1.4–1.9 mm, glandular-pubescent;

corolla violet to purple, reddish purple, or blue, without nectar guides, ventricose, 15–22 mm, glandular-pubescent externally, glabrous internally, tube 5–7 mm, throat gradually inflated, 4.5–7 mm diam., slightly 2-ridged abaxially;

stamens included or longer pair reaching orifice, filaments glabrous, pollen sacs parallel, 1–1.5(–1.8) mm, distal 1/2–2/3 indehiscent, sides glabrous, sutures denticulate, teeth to 0.1 mm;

staminode 11–13 mm, reaching orifice or barely exserted, 0.4–0.5 mm diam., glabrous;

style 12–16 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.

6–10 × 4–6 mm.

9–13 × 5–7 mm, glabrous.

= 16.