Flora of North America species comparison

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

ascending to erect, 7–35 cm, puberulent, hairs usually white, scalelike.

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.

basal and cauline, or basal sometimes few or absent, ± leathery, densely retrorsely hairy, hairs white, scalelike;

basal and proximal cauline petiolate, (28–)50–130 × 7–40 mm, blade ovate to oblong, base tapered, margins entire or dentate (often crisped), apex obtuse to acute;

cauline 2–4 pairs, short-petiolate or sessile, 35–83 × 7–26 mm, blade elliptic to deltate-ovate or lanceolate, base tapered to clasping, margins entire, apex obtuse to acute or 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.

continuous to ± interrupted, cylindric, 4–23 cm, axis glandular-pubescent, verticillasters 4–9, cymes (1 or)2–7-flowered, 2 per node;

proximal bracts ovate to lanceolate, 19–61 × 15–30 mm;

peduncles and pedicels 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 lanceolate, 8–11 × 1.6–2 mm, glandular-pubescent;

corolla pink to reddish pink or violet, with or without faint reddish nectar guides, tubular-funnelform, 14–20 mm, sparsely white-lanate internally abaxially, tube 5–7 mm, throat gradually inflated, not constricted at orifice, 4–7 mm diam., 2-ridged abaxially;

stamens included, pollen sacs divergent, navicular-sigmoid, 1.1–1.4 mm, dehiscing incompletely, connective not splitting, sutures papillate;

staminode 8–10 mm, included, 0.3–0.4 mm diam., tip straight to recurved, distal 5–7 mm densely pilose, hairs golden yellow, to 1 mm;

style 11–13 mm.

9–12 × 7–9 mm.

6–9 × 4–5.5 mm.