Flora of North America species comparison

erect, sometimes ascending, 30–63 cm, glabrous, not glaucous.

ascending to erect, 40–70 cm, spreading-puberulent or retrorsely hairy proximally, glandular-pubescent distally, not glaucous.

basal and cauline, or basal absent, not leathery, glabrous or retrorsely hairy, not glaucous;

basal and proximal cauline 30–90(–116) × 5–26 mm, blade oblanceolate, base tapered, margins entire, apex obtuse to acute;

cauline 6–12 pairs, sessile, 25–113 × 3–13 mm, blade lanceolate to linear, base tapered to truncate, apex obtuse to acute.

basal and cauline, not leathery, glabrate or puberulent;

basal and proximal cauline 20–70 × (5–)9–20 mm, blade oblanceolate, base tapered, margins entire or ± serrate or crenate, apex obtuse to acute;

cauline 6–9 pairs, sessile, 120–150 × 30–40 mm, blade oblong to lanceolate or ovate-lanceolate, base tapered to clasping, margins serrate to dentate, apex acute to acuminate.

continuous, sometimes interrupted, secund, 16–30 cm, axis glabrous, verticillasters 7–11, cymes 1–4-flowered, (1 or)2 per node;

proximal bracts lanceolate to linear, 10–72 × 1–12 mm;

peduncles and pedicels glabrous.

interrupted, conic, 5–20 cm, axis glandular-pubescent, verticillasters 4–7, cymes 3–7-flowered, 2 per node;

proximal bracts ovate-lanceolate to lanceolate, 16–60(–80) × 3–45 mm, margins entire or serrate;

peduncles and pedicels ascending, glandular-pubescent.

calyx lobes lanceolate to elliptic, 3–5 × 2–2.6 mm, glabrous;

corolla lavender to violet, with reddish purple nectar guides, ventricose, 26–34 mm, glabrous externally, sparsely to densely white-villous internally abaxially, tube 7–8 mm, throat gradually to abruptly inflated, not constricted at orifice, 7–10 mm diam., rounded abaxially;

stamens: longer pair exserted, pollen sacs opposite, navicular, 1.4–1.9 mm, dehiscing completely, sides glabrous, sutures smooth or papillate;

staminode 14–16 mm, reaching orifice or exserted, 1–1.2 mm diam., tip straight, glabrous;

style 14–18 mm.

calyx lobes lanceolate, 4–5.5 × 0.8–1.2 mm, glandular-pubescent;

corolla pale lavender to nearly white, with violet nectar guides, tubular-funnelform, 10–16 mm, glandular-pubescent externally, sparsely white-lanate internally abaxially, tube 6–7 mm, throat gradually inflated, 5–7 mm diam., slightly 2-ridged abaxially;

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

staminode 7–8 mm, reaching orifice or slightly exserted, 0.3–0.5 mm diam., tip straight to slightly recurved, distal 4–5 mm moderately to densely pilose, hairs golden, to 1.2 mm;

style 9–12 mm.

9–14 × 5–6 mm.

5–6 × 3.5–4 mm, glabrous.

= 16.