Flora of North America species comparison

ascending to erect, 10–90 cm, glaucous or not.

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

basal and proximal cauline 31–90 × 11–20 mm, blade oblanceolate to elliptic, base tapered, margins finely to coarsely dentate, apex rounded to obtuse;

cauline 3–6 pairs, short-petiolate or sessile, (15–)30–90 × 4–30 mm, blade lanceolate to ovate-oblong, base tapered, margins coarsely dentate, distals sometimes entire, apex obtuse or acute.

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.

interrupted, cylindric, (5–)7–34 cm, axis sparsely to densely glandular-pubescent, verticillasters 4–10, cymes 2–4-flowered;

proximal bracts ovate to lanceolate, 5–50 × 2–18 mm;

peduncles and pedicels spreading to ascending, glandular-pubescent.

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.

calyx lobes ovate, 4.5–8.5 × (2–)2.9–3.2 mm, glandular-pubescent;

corolla white to pink or light lavender to light blue or light violet, with reddish purple nectar guides, strongly bilabiate, ventricose-ampliate, 22–35 mm, glandular-pubescent externally, glandular-pubescent internally, also white-villous abaxially, tube 5–8 mm, length 0.9–1.2 times calyx lobes, throat abruptly inflated, constricted at orifice, 10–18 mm diam., rounded abaxially;

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

staminode 20–22 mm, exserted, 0.4–0.8 mm diam., tip recurved, distal 8–10 mm densely lanate, hairs yellowish or whitish, to 4 mm;

proximal 6–8 mm densely glandular-pubescent;

style 15–18 mm, 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.

10–14 × 5–8 mm, glabrous.

6–10 × 4–6 mm.

= 16.