Flora of North America species comparison

ascending to erect, (20–)35–100 cm, glabrous or sparsely to densely puberulent, sometimes also sparsely glandular-pubescent, especially distally, not glaucous.

erect, 12–50 cm, retrorsely hairy proximally, becoming glandular-pubescent distally, not glaucous.

basal and cauline, ± leathery or not, glabrous or puberulent to pubescent, especially along midveins;

basal and proximal cauline (25–)35–190 × (5–)12–55 mm, blade triangular to ovate or lanceolate, base tapered, rarely truncate, margins ± serrate or dentate, apex acute, rarely obtuse;

cauline 2–5 pairs, short-petiolate or sessile, 35–90 × (8–)15–50 mm, blade ovate to oblong or lanceolate, base tapered to clasping or cordate-clasping, margins serrate to dentate, apex obtuse to acute.

basal and cauline, not leathery, glabrous or retrorsely hairy abaxially along midvein and glabrous adaxially, ± glaucescent;

basal and proximal cauline 13–55 × 4–8(–12) mm, blade spatulate to oblanceolate or elliptic, base tapered, margins entire, apex rounded to acute;

cauline 2–5(or 6) pairs, sessile, 5–40(–52) × 0.3–5 mm, blade linear, base tapered, margins entire, apex acuminate.

interrupted, cylindric to conic, (5–)8–30 cm, axis sparsely to moderately glandular-pubescent, verticillasters 3–7, cymes 3–11-flowered, 2 per node;

proximal bracts ovate to lanceolate, (8–)18–75 × (5–)8–35 mm, margins ± serrate to dentate;

peduncles and pedicels spreading to ascending, ± glandular-pubescent.

interrupted, secund, 1–14 cm, axis glandular-pubescent, verticillasters (1–)3 or 4(or 5), cymes 1–3-flowered, 1(or 2) per node;

proximal bracts linear, 3–15 × 0.3–1.4 mm;

peduncles and pedicels erect, sometimes ascending, glandular-pubescent.

calyx lobes ovate, 2.4–5.5 × 0.9–1.8 mm, margins broadly scarious, glandular-pubescent;

corolla blue to violet or light blue, with reddish purple nectar guides, funnelform, 13–23 mm, glandular-pubescent externally, sparsely white- or yellow-villous internally abaxially, tube 4–8 mm, throat gradually inflated, 4–9 mm diam., 2-ridged abaxially;

stamens included, pollen sacs opposite, navicular to subexplanate, 0.8–1 mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth or ± papillate;

staminode 8–11 mm, reaching orifice, 0.2–0.3 mm diam., tip straight to recurved, distal 1–5 mm pilose to villous, hairs yellow, to 1.2 mm;

style 9–13 mm.

calyx lobes ovate to lanceolate, 3.8–7.5 × 1.5–2.6 mm, glabrescent or glandular-pubescent;

corolla violet to blue or purple, with violet nectar guides, tubular-funnelform, 17–25 mm, glandular-pubescent externally, densely golden-villous internally abaxially, tube 4–7 mm, throat slightly inflated, 5–7 mm diam., prominently 2-ridged abaxially;

stamens included, pollen sacs divergent to opposite, navicular, 1–1.3 mm, dehiscing completely, connective splitting, sides glabrous, sutures papillate;

staminode 10–13 mm, included, 0.2–0.3 mm diam., tip straight to recurved, distal 7–11 mm densely pilose, hairs golden, to 1.5 mm;

style 12–17 mm.

4–6.5 × 3–4 mm, glabrous.

6–9 × 4–5 mm, glabrous.

= 16, 32.