Flora of North America species comparison

ascending to erect, 10–40 cm, puberulent or retrorsely hairy proximally, rarely glabrous, glandular-pubescent distally, not glaucous.

ascending to erect, (2–)6–60 cm, retrorsely hairy, sometimes also villous or glandular-villous, or glabrate.

basal and cauline, not leathery, glabrous;

basal and proximal cauline 20–102 × 4–15 mm, blade lanceolate to oblanceolate or spatulate, base tapered, margins serrulate or denticulate, sometimes entire, apex obtuse to acute;

cauline (2 or)3–5 pairs, sessile, 18–50(–70) × 3–14 mm, blade ovate to lanceolate, base tapered to clasping, margins serrulate or denticulate, sometimes entire, apex acute to acuminate.

basal and cauline, not leathery, glabrous or glabrate to retrorsely hairy and, sometimes, sparsely villous abaxially, glabrous or glabrate to retrorsely hairy and, sometimes, villous or glandular-villous adaxially;

basal and proximal cauline petiolate, (14–)22–130(–180) × 3–30(–40) mm, blade spatulate to obovate, oblanceolate, elliptic, or linear, base tapered, margins entire or ± dentate to serrate, apex rounded to obtuse or acute;

cauline 2–6 pairs, sessile or proximals short-petiolate, 18–90 × 3–20(–25) mm, blade oblanceolate to oblong, lanceolate, or linear, base tapered to clasping or cordate-clasping, margins entire or ± dentate to serrate, apex obtuse to acute.

interrupted or continuous, cylindric, 5–18 cm, axis glandular-pubescent, verticillasters 3–6(–8), cymes 2–5-flowered, 2 per node;

proximal bracts ovate to lanceolate, 6–40 × 2–10 mm, margins entire or serrulate to denticulate;

peduncles and pedicels ascending to erect, puberulent or glandular-pubescent.

continuous or interrupted, cylindric, (1–)2–20(–27) cm, axis glandular-pubescent to glandular-villous, sometimes also retrorsely hairy, verticillasters 2–7(–9), cymes (1 or)2–6-flowered, 2 per node;

proximal bracts oblanceolate to oblong or lanceolate, 12–75 × 2–23 mm;

peduncles and pedicels glandular-villous or glandular-pubescent and, sometimes, also retrorsely hairy.

calyx lobes ovate to lanceolate, 2–4.5 × 1.5–2.5 mm, glandular-pubescent;

corolla blue to light purple or violet, with reddish purple to bluish purple nectar guides, funnelform, 10–16(–18) mm, glandular-pubescent externally, moderately white-pilose internally abaxially, tube 4–5 mm, throat 3–5 mm diam., 2-ridged abaxially;

stamens included, pollen sacs divergent to opposite, navicular, 0.6–0.8 mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth or ± papillate;

staminode 8–10 mm, included or reaching orifice, 0.2–0.3 mm diam., tip straight to slightly recurved, distal 4–5 mm moderately to densely villous, hairs golden yellow, to 1.3 mm;

style 8–11 mm.

calyx lobes lanceolate, 5.5–13 × 1.4–3 mm, glandular-pubescent to glandular-villous;

corolla lavender to violet, purple, pink, or blue, with reddish purple nectar guides, funnelform or ventricose-ampliate, 16–35(–42) mm, sparsely to densely white- or yellow-villous internally abaxially, sometimes glandular-pubescent laterally, tube 4–9 mm, throat gradually to abruptly inflated, constricted or not at orifice, 6–14 mm diam., rounded abaxially;

stamens included, pollen sacs widely divergent to opposite, navicular to subexplanate or explanate, 0.8–1.9 mm, dehiscing completely, sutures smooth or papillate;

staminode 12–18 mm, exserted or prominently exserted, 0.3–0.9 mm diam., tip recurved, distal 6–15 mm sparsely to densely lanate, hairs yellow, yellowish, or orangish, to 4 mm, and medial hairs shorter, stiffer, and retrorse;

style 9–20 mm, glabrous or proximal 1–10 mm sparsely glandular-pubescent.

5–7 × 2–3 mm, glabrous.

6–13 × 4–6 mm, sparsely glandular-pubescent distally.

= 16.