Flora of North America species comparison

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

prostrate, only tip ascending, 2–8(–10) cm, not cinereous, retrorsely hairy, hairs pointed.

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.

not leathery, not cinereous, retrorsely hairy, hairs pointed;

cauline 3–20 pairs, petiolate, 2.5–14(–21) × 1–4 mm, blade obovate to spatulate, oblanceolate, or linear, base tapered, apex rounded to acute or mucronate.

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, cylindric to secund, 0.5–3 cm, axis retrorsely hairy to retrorsely cinereous, hairs pointed, sometimes also glandular-pubescent, verticillasters 1–5, cymes 1–3-flowered, 1 per node;

proximal bracts linear, 2.8–13(–17) × 0.7–3 mm;

peduncles and pedicels ascending to erect, retrorsely hairy to retrorsely cinereous, hairs pointed, and glandular-pubescent.

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 to linear, 4–6.5(–8.5) × 1–1.5(–1.9) mm, herbaceous- or narrowly scarious-margined, retrorsely hairy, hairs pointed, and sparsely glandular-pubescent;

corolla blue to purplish lavender or lavender, lined internally abaxially with reddish violet nectar guides, funnelform, 10–17(–21) mm, yellow-villous internally abaxially, tube 5–6 mm, throat gradually inflated, 4.5–6 mm diam., 2-ridged abaxially;

stamens: longer pair reaching orifice or exserted, filaments glabrous, pollen sacs opposite, navicular to explanate, 0.6–1.2 mm, sutures papillate;

staminode 9–12 mm, reaching orifice, flattened distally, 0.3–0.5 mm diam., tip straight to recurved, distal 7–9 mm densely pilose, hairs golden yellow, to 1 mm;

style 13–15 mm.

5–7 × 2–3 mm, glabrous.

3.5–5 × 3–4 mm.

= 16.