Flora of North America species comparison

ascending, (8–)10–40 cm, glabrous or retrorsely hairy, not glaucous.

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

essentially cauline, basal usually poorly developed, not leathery, glabrous;

basal and proximal cauline 10–40(–65) × 1–6 mm, blade oblanceolate, base tapered, margins entire, apex obtuse to acute;

cauline 3–5 pairs, sessile or proximals short-petiolate, 12–60 × 2–5(–7) mm, blade oblanceolate to lanceolate or linear, base tapered, margins entire, apex 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, 1–14 cm, axis glabrous or ± puberulent at axils, verticillasters (1 or)2–6, cymes (1–)3–7-flowered, 2 per node;

proximal bracts lanceolate to linear, 8–30(–45) × 1–7 mm, margins entire;

peduncles and pedicels erect, glabrous.

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 obovate to ovate, 1–1.8 × 0.7–1.1 mm, apex truncate to cuspidate, glabrous;

corolla violet to blue or purple, without nectar guides, funnelform, 7–9(–11) mm, glabrous externally, moderately yellowish or white-pilose internally abaxially, tube 3–4 mm, throat slightly inflated, 2–3 mm diam., 2-ridged abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, explanate, 0.3–0.4(–0.5) mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth;

staminode 4–6 mm, included, 0.3–0.4 mm diam., tip straight, distal 0.5–1 mm sparsely to moderately pilose, hairs yellow, to 0.4 mm;

style 5–6 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.

2.5–4 × 1.8–2.5 mm, glabrous.

6–9 × 4–5 mm, glabrous.

= 16, 32.