Flora of North America species comparison

erect, 3–25 cm, glabrous or ± retrorsely hairy, not glaucous.

ascending to erect, 22–100 cm, glaucous.

basal and cauline, not leathery, glabrous;

basal and proximal cauline (10–)17–60 × 5–18 mm, blade spatulate to oblanceolate, lanceolate, or elliptic, base tapered, margins entire, apex rounded to obtuse or acute;

cauline 2–6 pairs, short-petiolate or sessile, 10–55 × 3–15 mm, blade ovate to lanceolate, base tapered to clasping, margins entire, apex obtuse to acute.

cauline 6–18 pairs, sessile, (8–)25–70 × (1–)2.5–4(–6) mm, blade lanceolate to linear, base tapered, margins entire, apex acute to acuminate.

interrupted, cylindric, 1–6 cm, axis sparsely glandular-pubescent, sometimes also retrorsely hairy, verticillasters 1–3(or 4), cymes 2–6-flowered, 2 per node;

proximal bracts lanceolate, 2–15 × 1–7 mm, margins entire;

peduncles and pedicels erect, sparsely to moderately glandular-pubescent.

interrupted, cylindric, 3–27 cm, axis sparsely glandular-pubescent, rarely glabrous, verticillasters (2–)4–9, cymes 1–3(–5)-flowered;

proximal bracts lanceolate to linear, 3–35 × 1–5 mm;

peduncles and pedicels spreading or ascending, glandular-pubescent.

calyx lobes lanceolate, 3–4 × 0.8–1.2 mm, glandular-pubescent;

corolla dark blue, sometimes whitish, without nectar guides, funnelform, 9–12 mm, glandular-pubescent externally, moderately whitish lanate internally abaxially, tube 3–4 mm, throat slightly inflated, 2–3 mm diam., 2-ridged abaxially;

stamens included, pollen sacs opposite, explanate to subexplanate, 0.5–0.6 mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth;

staminode 5–6 mm, included, 0.2–0.3 mm diam., tip straight to slightly recurved, distal 0.5–1 mm moderately pilose, hairs golden yellow, to 0.5 mm;

style 4–6 mm.

calyx lobes ovate, 3.8–6 × 2.6–4 mm, glabrous or sparsely glandular-pubescent;

corolla blue to violet or purple, without nectar guides, strongly bilabiate, ventricose-ampliate, 23–32 mm, glabrous or glandular-pubescent externally, sparsely white-lanate internally abaxially, glandular-pubescent adaxially, tube 7–11 mm, length 1.8–2 times calyx lobes, throat gradually inflated, not constricted at orifice, 8–13 mm diam., slightly 2-ridged abaxially;

stamens included, filaments of shorter pair glandular-puberulent proximally, pollen sacs navicular, 1.8–2.4 mm, sutures denticulate, teeth to 0.1 mm;

staminode 10–13 mm, included, 0.6–0.7 mm diam., tip straight, distal 3–7 mm sparsely to densely pilose, hairs yellow, to 1 mm;

proximal 1–3 mm glandular-pubescent;

style 19–23 mm, glabrous.

4–7 × 2.5–4 mm, glabrous.

10–17 × 5–7 mm, glabrous.