Flora of North America species comparison

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

ascending to erect, (25–)30–60 cm, puberulent proximally, glandular-pubescent distally.

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, not leathery, puberulent proximally, glandular-pubescent distally;

basal and proximal cauline petiolate, 55–140 × 2–14 mm, blade oblanceolate, base tapered, margins entire or ± dentate, apex obtuse to acute;

cauline 3–6 pairs, short-petiolate or sessile, 25–40(–60) × 1–3(–7) mm, blade lanceolate, base tapered to subcordate-clasping, margins entire or ± serrate, apex obtuse to acute.

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, 8–30 cm, axis glandular-pubescent, verticillasters 6–10, cymes 1- or 2(or 3)-flowered, 2 per node;

proximal bracts lanceolate to linear, 5–35 × 1–6 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, 4–7 × 1–1.8 mm, glandular-pubescent;

corolla blue to violet, with reddish purple nectar guides, funnelform, 16–20 mm, sparsely to moderately white- or yellow-lanate internally abaxially, tube 7–8 mm, throat gradually inflated, not constricted at orifice, 6–8 mm diam., 2-ridged abaxially;

stamens included, pollen sacs parallel, navicular, 1.4–1.8 mm, dehiscing completely, sutures papillate;

staminode 9–11 mm, reaching orifice or barely exserted, 0.7–0.9 mm diam., tip recurved, distal 6–8 mm densely hairy, hairs yellow-orange, to 1.4 mm;

style 7–9 mm.

9–12 × 7–9 mm.

7–9 × 4–6 mm.