Flora of North America species comparison

ascending to erect, (20–)30–100 cm, puberulent to pubescent, sometimes glabrous, not glaucous.

decumbent to ascending, 8–18(–25) cm, glabrous, not glaucous.

basal and cauline, not leathery, puberulent to pubescent, sometimes only along midvein and margins;

basal and proximal cauline 40–150(–230) × 14–50(–70) mm, blade ovate to deltate-ovate, base truncate to tapered, margins serrate-dentate, apex obtuse to acute;

cauline (3–)5–7 pairs, sessile, 25–80(–120) × 15–45(–70) mm, blade oblong to ovate or triangular-ovate, base clasping, margins serrate, apex acute.

basal and cauline, leathery or not, glabrous, not glaucous;

basal and proximal cauline (15–)30–65(–95) × 2–12(–20) mm, blade oblanceolate to elliptic, rarely spatulate, base tapered, margins entire, apex obtuse to acute, rarely rounded;

cauline 1–3 pairs, sessile, 20–70(–85) × 5–12 mm, blade oblanceolate to lanceolate or linear, base tapered to truncate, margins undulate, apex acute.

interrupted, narrowly conic, 6–30 cm, axis densely glandular-pubescent, verticillasters 4–10, cymes 5–13-flowered, 2 per node;

proximal bracts ovate to lanceolate, 11–35(–70) × 4–30(–45) mm, margins serrate, sometimes entire;

peduncles and pedicels ascending to erect, densely glandular-pubescent.

continuous, secund, (3–)5–19 cm, axis glabrous, verticillasters 2–6, cymes 2–4-flowered, 2 per node;

proximal bracts lanceolate, rarely elliptic or oblanceolate, 11–55 × 5–11 mm;

peduncles and pedicels glabrous or ± glandular, peduncles to 8 mm, pedicels 1–4 mm.

calyx lobes ovate to lanceolate, (2–)3–5 × 0.9–1.6(–1.9) mm, margins narrowly scarious, sparsely to densely glandular-pubescent;

corolla violet to blue or purple, with reddish purple nectar guides, funnelform, 15–22 mm, glandular-pubescent externally, densely white-villous internally abaxially, rarely glabrous, tube 5–6 mm, throat slightly inflated, 5–7 mm diam., 2-ridged abaxially;

stamens included, pollen sacs opposite, navicular, 0.8–1.1 mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth or papillate;

staminode 9–12 mm, reaching orifice or slightly exserted, 0.3–0.4 mm diam., tip recurved, distal 1–2 mm densely pilose, hairs yellow, to 1.5 mm;

style 9–12 mm.

calyx lobes ovate to obovate, (3.5–)4–7 × 1.8–2(–3) mm, apex acuminate, sometimes caudate, glabrous or sparsely glandular;

corolla blue to violet or lavender, with or without faint purple nectar guides, ventricose, 14–22 mm, glabrous externally, glabrous internally, tube 5–8 mm, throat gradually inflated, not constricted at orifice, 4–6.5 mm diam., rounded abaxially;

stamens: longer pair reaching orifice, pollen sacs divergent, navicular, 1.2–1.7 mm, dehiscing incompletely, proximal 1/5 indehiscent, connective not splitting, sides pilose, hairs white, to 0.3 mm, sutures papillate or denticulate, teeth to 0.1 mm;

staminode 8–12 mm, included, 0.4–0.6 mm diam., tip straight, distal 5–6 mm sparsely pilose to villous, hairs yellow, to 0.5 mm;

style 9–12 mm.

4–6 × 2.5–4.5 mm, glabrous.

5.5–8 × 3.5–4.5 mm.

= 16.