Flora of North America species comparison

ascending to erect, (10–)20–65 cm, glabrous or sparsely retrorsely hairy distally, not glaucous.

20–50 cm, puberulent or retrorsely hairy proximally, puberulent and glandular-pubescent distally.

basal and cauline, not leathery, glabrous;

basal and proximal cauline 28–160(–235) × 8–25(–35) mm, blade oblanceolate to elliptic, base tapered, margins entire, apex obtuse to acute;

cauline 2–5 pairs, sessile or proximals short-petiolate, 10–130 × 3–35 mm, blade oblong to ovate or lanceolate, base truncate to clasping, margins entire, apex obtuse to acute.

puberulent or retrorsely hairy, sometimes only along midveins and margins;

basal and proximal cauline 28–68 × 3–9 mm, blade oblanceolate to lanceolate or linear, base tapered, margins entire, apex obtuse to acute;

cauline 6–9 pairs, 32–95 × 4–12 mm, blade lanceolate to linear, base tapered, apex acute.

continuous or interrupted, cylindric, (1–)2–11(–27) cm, axis glabrous or sparsely retrorsely hairy, verticillasters 1–3(or 4), cymes (2–)4–13-flowered, 2 per node;

proximal bracts lanceolate, (5–)16–66 × (1–)4–19 mm, margins entire;

peduncles and pedicels erect, glabrous.

± secund, 6–28 cm, axis glandular-pubescent, verticillasters 4–11, cymes 1- or 2-flowered;

proximal bracts lanceolate to linear, 4–35 × 1–4 mm;

peduncles and pedicels glandular-pubescent.

calyx lobes oblanceolate to lanceolate, (4–)5–9 × 1.4–3.5 mm, glabrous;

corolla blue to purple or violet, without nectar guides, tubular-funnelform, 14–21 mm, glabrous externally, moderately white- or yellowish pilose internally abaxially, tube 5–6 mm, throat slightly inflated to slightly ventricose, 4–7 mm diam., 2-ridged abaxially;

stamens included, pollen sacs divergent, saccate, 0.7–1.2 mm, dehiscing incompletely, distal 1/5–1/4 indehiscent, connective not splitting, sides glabrous, sutures papillate;

staminode 7–9 mm, included, 0.4–0.7 mm diam., tip straight to slightly recurved, distal 1–2 mm densely pilose to lanate, hairs golden yellow, to 1.4 mm, medial 2–4 mm sparsely lanate;

style 8–10 mm.

calyx lobes ovate to lanceolate, 5–8 × 2–2.8 mm, glandular-pubescent;

corolla violet to lavender to purple, lined internally abaxially with purple nectar guides, ventricose, 25–35 mm, glabrous internally, tube 7–9 mm, throat abruptly inflated, 9–10 mm diam., slightly 2-ridged abaxially;

stamens: longer pair reaching orifice, pollen sacs divergent, 1.8–2.2 mm, sutures denticulate, teeth to 0.3 mm;

staminode 17–19 mm, included, 0.6–1 mm diam.;

style 15–20 mm.

5–7 × 3–4 mm, glabrous.

11–15 × 7–9 mm.

= 16, 32.

= 16.