Flora of North America species comparison

erect, sometimes ascending, (12–)20–65(–90) cm, glabrous or puberulent, not glaucous.

ascending to erect, 2–6(–8) cm, pubescent or densely retrorsely hairy.

basal and cauline or, often, basal absent, not leathery, glabrous or puberulent, not or slightly glaucous;

basal and proximal cauline (20–)60–114 × (3–)12–21 mm, blade oblanceolate or lanceolate, rarely linear, base tapered, margins entire, apex obtuse to acute;

cauline 5–11 pairs, sessile, 40–118 × 3–17 mm, blade lanceolate, base tapered to truncate, apex obtuse to acute.

basal and cauline, not leathery, retrorsely hairy;

basal and proximal cauline petiolate, 8–30 × 2–9 mm, blade spatulate to oblanceolate, base tapered, margins entire, apex rounded to obtuse or acute;

cauline (0 or)1–3 pairs, sessile, 14–23 × 1–4 mm, blade oblanceolate to linear, not arcuate, base tapered, margins entire, apex acute.

continuous, sometimes interrupted, secund, (3–)6–40 cm, axis glabrous or retrorsely hairy, verticillasters (3–)6–14, cymes 2–5-flowered, 2 per node;

proximal bracts lanceolate to linear, 19–74(–98) × 2–10 mm;

peduncles and pedicels glabrous or retrorsely hairy.

continuous, cylindric, 1–4 cm, axis puberulent or retrorsely hairy, verticillasters 1–5, cymes (1 or)2-flowered, 2 per node;

proximal bracts oblanceolate to lanceolate or linear, 13–24 × 1–4 mm;

peduncles and pedicels retrorsely hairy, sometimes sparsely glandular-pubescent.

calyx lobes ovate to elliptic, 2.2–5 × 1.3–2.2 mm, glabrous or puberulent;

corolla violet to lavender, pink-lavender, or purple, with reddish purple nectar guides, ventricose, 17–27 mm, glabrous externally, sparsely white-villous, rarely glabrous, internally abaxially, tube 5–8 mm, throat gradually to abruptly inflated, slightly constricted at orifice, 6–8 mm diam., rounded abaxially;

stamens: longer pair slightly exserted, pollen sacs divergent to opposite, navicular, 1.5–1.8 mm, dehiscing completely or incompletely, connective splitting or not, sides glabrous, sutures smooth or papillate;

staminode 12–14 mm, reaching orifice or exserted, 0.7–1.2 mm diam., tip straight, glabrous;

style 13–15 mm.

calyx lobes lanceolate, 5–8.5 × 1–2.1 mm, retrorsely hairy, sometimes sparsely glandular-pubescent;

corolla light blue to blue, lavender, or violet, without nectar guides, funnelform, 14–20 mm, glabrous or sparsely white-lanate internally abaxially, tube 6–8 mm, throat gradually inflated, not constricted at orifice, 4–7 mm diam., slightly 2-ridged abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, navicular, 0.9–1.2 mm, dehiscing completely, sutures papillate;

staminode 9–11 mm, included or reaching orifice, 0.5–1.1 mm diam., tip straight to recurved, distal 5–7 mm moderately pubescent to lanate, hairs yellow or yellow-orange, to 1.5 mm;

style 9–12 mm.

9–14 × 4–8 mm.

4–6.5 × 4–5 mm.