Flora of North America species comparison

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

ascending to erect, (6–)15–45(–65) cm, glabrous or scabrous.

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.

basal and cauline, basal not reduced, glabrous, sometimes scabrous;

basal and proximal cauline (25–)40–90 × 2–18 mm, blade spatulate to oblanceolate or linear, base tapered, apex rounded to obtuse or acute;

cauline 2–8 pairs, sessile, 18–113 × 2–24(–40) mm, blade ovate to lanceolate or linear, base tapered to cordate-clasping, apex acute to acuminate.

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.

continuous or interrupted, cylindric, (2–)5–30(–37) cm, axis glabrous, rarely scabrous, verticillasters (3–)5–15(–26), cymes (2–)4–8(–10)-flowered;

proximal bracts ovate to lanceolate or linear, (3–)12–98 × (1–)2–28 mm;

peduncles and pedicels glabrous or scabrous, peduncles to 3 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.

calyx lobes ovate to lanceolate, 4–8 × 1–2.5 mm, margins entire or erose, broadly scarious, glabrous or scabrous;

corolla lavender, blue, or pink, with violet or reddish purple nectar guides, tubular-funnelform, 13–20(–22) mm, glabrous externally, sparsely white-pubescent internally abaxially or glabrous, tube 6–8 mm, throat gradually inflated, 4–6 mm diam., rounded abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, (0.9–)1.1–1.5 mm, sutures papillate;

staminode 8–10 mm, reaching orifice, 0.9–1.2 mm diam., tip recurved, distal 4–6 mm sparsely villous, hairs golden yellow, to 1 mm, hairs on proximal part of staminode mostly along margins;

style 8–12 mm.

3.5–5 × 3–4 mm.

9–15 × 5–7 mm.