Flora of North America species comparison

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

ascending to erect, (11–)20–60 cm, ± puberulent proximally, glabrous distally, not 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.

basal and cauline, not leathery, proximals ± puberulent, distals glabrous, not glaucous;

basal and proximal cauline (24–)40–90(–120) × 6–20(–30) mm, blade obovate, base tapered, margins entire, apex obtuse to acute;

cauline 3–5 pairs, sessile, (25–)35–70 × 8–23 mm, blade ovate to lanceolate or elliptic, base tapered to clasping, apex acute, rarely obtuse.

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, secund, 7–21 cm, axis glabrous, verticillasters 3–6, cymes 1- or 2(or 3)-flowered, 2 per node;

proximal bracts ovate to lanceolate, 5–28 × 2.5–24 mm;

peduncles and pedicels glabrous, peduncles to 26 mm, pedicels 1–8(–12) mm.

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, 4.5–7 × 2.5–3 mm, apex acute to acuminate, glabrous;

corolla blue to violet, without nectar guides, ventricose, (20–)24–30(–32) mm, glabrous externally, glabrous internally, tube 8–11 mm, throat gradually inflated, not constricted at orifice, 8–10(–12) mm diam., 2-ridged abaxially;

stamens: longer pair reaching orifice, pollen sacs divergent, rarely nearly opposite, sigmoid, 1.8–2.4(–2.8) mm, dehiscing incompletely, proximal 1/5 indehiscent, connective not splitting, sides sparsely hispid, hairs white, to 0.3 mm, sutures denticulate, teeth to 0.1 mm;

staminode 14–16 mm, included, 0.6–1 mm diam., tip straight to recurved, distal 0.5–1 mm moderately pilose, hairs yellow, to 0.8 mm, remaining distal 3–4 mm with scattered yellow hairs;

style 18–22 mm.

9–12 × 7–9 mm.

8–14 × 6–10 mm.

= 16.