Flora of North America species comparison

ascending to erect, (15–)20–45(–50) cm, glabrous.

ascending to erect, 22–100 cm, glaucous.

basal and cauline, glabrous;

basal and proximal cauline 20–80(–102) × 2–25 mm, blade spatulate to oblanceolate, base tapered, apex rounded to obtuse or acute, sometimes mucronate;

cauline 4–6 pairs, sessile, (16–)20–78 × 3–24 mm, blade ovate to elliptic or lanceolate, base clasping to cordate-clasping, apex acute to acuminate.

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 to nearly continuous, secund, 6–24(–31) cm, axis glabrous, verticillasters (2 or)3–10(–12), cymes 2–7-flowered;

proximal bracts ovate, 9–70 × 2–26 mm;

peduncles and pedicels glabrous.

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 ovate, 4–7 × 2.4–4 mm, margins erose, sometimes entire, broadly scarious, glabrous;

corolla blue to violet or lavender, rarely pink, with reddish or reddish purple nectar guides, tubular-funnelform to ventricose, 15–25 mm, glabrous externally, glabrous or sparsely to densely white-villous internally abaxially, tube 8–11 mm, throat gradually inflated, 4–7 mm diam., rounded abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, 1–1.4 mm, sutures papillate;

staminode 10–13 mm, included or reaching orifice, 1–1.4 mm diam., tip abruptly recurved, bifurcate, distal 4–6 mm densely villous, hairs golden yellow, to 2 mm;

style 9–15 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.

9–12 × 7–9 mm.

10–17 × 5–7 mm, glabrous.