Flora of North America species comparison

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

ascending to erect, (18–)30–80 cm, puberulent or retrorsely hairy proximally, puberulent or 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.

deciduous, 8–13 pairs, short-petiolate or sessile, 23–130 × 3–20 mm, blade lanceolate, rarely linear, base tapered, margins entire or remotely serrate, apex acute to acuminate, rarely obtuse, glabrous or puberulent to pubescent, not glaucous.

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, (3–)6–15(–28) cm, axis sparsely to moderately glandular-pubescent, verticillasters 3–7, cymes 2–7-flowered;

proximal bracts lanceolate to linear, (5–)15–80 × (1–)2–8(–20) mm;

peduncles and pedicels spreading or 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 lanceolate, 7–16 × 2–4 mm, glandular-pubescent;

corolla lavender to purple, unlined internally or lined with faint lavender nectar guides abaxially, nearly personate, funnelform, 35–46 mm, glabrous externally, moderately white-lanate internally abaxially, tube 8–14 mm, throat 8–12 mm diam.;

stamens included, pollen sacs 1.1–1.8 mm;

staminode 10–13 mm, flattened distally, 0.2–0.3 mm diam., tip straight, glabrous;

style 30–40 mm.

2.5–4 × 1.8–2.5 mm, glabrous.

10–14 × 5–7 mm.

= 16, 32.