Flora of North America species comparison

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

ascending to erect, (9–)15–32 cm, retrorsely hairy.

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, glabrous or retrorsely hairy;

basal and proximal cauline petiolate, 20–85 × 4–8(–12) mm, blade oblanceolate to lanceolate, base tapered, margins entire or obscurely dentate, apex obtuse;

cauline 2 or 3 pairs, sessile, 30–75 × 3–10 mm, blade lanceolate, base tapered to clasping, margins entire, apex 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, 5–18 cm, axis glandular-pubescent, verticillasters 3–7, cymes 2–5-flowered, 2 per node;

proximal bracts lanceolate, 5–38 × 2–10 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, (2.2–)4.5–7.5 × (0.9–)1.2–1.6 mm, glandular-pubescent;

corolla violet or blue, with reddish violet nectar guides, weakly bilabiate, funnelform, 8–12 mm, sparsely yellow-lanate or glabrous internally abaxially, tube 4–5 mm, throat gradually inflated, not constricted at orifice, 2–5 mm diam., rounded abaxially;

stamens included, pollen sacs opposite, explanate, 0.6–1 mm, dehiscing completely, sutures smooth;

staminode 6–8 mm, included, 0.3–0.6 mm diam., tip recurved, distal 3–5 mm sparsely to densely pubescent, hairs yellow, to 1 mm;

style 3–4 mm.

9–12 × 7–9 mm.

4.5–6.5 × 4–5 mm.