Flora of North America species comparison

ascending to erect, (10–)20–65 cm, glabrous or sparsely retrorsely hairy distally, not glaucous.

prostrate, decumbent, ascending, or erect, 2–28 cm, retrorsely hairy or pubescent.

basal and cauline, not leathery, glabrous;

basal and proximal cauline 28–160(–235) × 8–25(–35) mm, blade oblanceolate to elliptic, base tapered, margins entire, apex obtuse to acute;

cauline 2–5 pairs, sessile or proximals short-petiolate, 10–130 × 3–35 mm, blade oblong to ovate or lanceolate, base truncate to clasping, margins entire, apex obtuse to acute.

not leathery, glabrous, glabrate, scabrous, or pubescent, hairs pointed;

cauline (1 or)2–4 pairs, petiolate, (2–)4–47 × 0.5–8 mm, blade elliptic to obovate, oblanceolate, or linear, base tapered, apex acute to mucronate.

continuous or interrupted, cylindric, (1–)2–11(–27) cm, axis glabrous or sparsely retrorsely hairy, verticillasters 1–3(or 4), cymes (2–)4–13-flowered, 2 per node;

proximal bracts lanceolate, (5–)16–66 × (1–)4–19 mm, margins entire;

peduncles and pedicels erect, glabrous.

continuous, ± secund, 1–8(–16) cm, axis retrorsely hairy, hairs pointed and, usually, sparsely glandular-pubescent, verticillasters (1 or)2–8, cymes 1–4-flowered, 1 or 2 per node;

proximal bracts oblanceolate to linear, 10–25 × 0.5–4 mm;

peduncles and pedicels ascending to erect, retrorsely hairy and, usually, sparsely glandular-pubescent.

calyx lobes oblanceolate to lanceolate, (4–)5–9 × 1.4–3.5 mm, glabrous;

corolla blue to purple or violet, without nectar guides, tubular-funnelform, 14–21 mm, glabrous externally, moderately white- or yellowish pilose internally abaxially, tube 5–6 mm, throat slightly inflated to slightly ventricose, 4–7 mm diam., 2-ridged abaxially;

stamens included, pollen sacs divergent, saccate, 0.7–1.2 mm, dehiscing incompletely, distal 1/5–1/4 indehiscent, connective not splitting, sides glabrous, sutures papillate;

staminode 7–9 mm, included, 0.4–0.7 mm diam., tip straight to slightly recurved, distal 1–2 mm densely pilose to lanate, hairs golden yellow, to 1.4 mm, medial 2–4 mm sparsely lanate;

style 8–10 mm.

calyx lobes lanceolate, 4–7(–7.5) × 0.9–1.8(–2.2) mm, broadly scarious-margined, apex acuminate to caudate, retrorsely puberulent, hairs pointed, and sparsely glandular-pubescent;

corolla blue to violet or lavender, lined internally abaxially with violet or reddish purple nectar guides, funnelform, 14–20 mm, sparsely to densely yellow-lanate or yellow-pilose internally abaxially, tube 6–8 mm, throat gradually inflated, 6–8 mm diam., 2-ridged abaxially;

stamens: longer pair reaching orifice, filaments glabrous, pollen sacs opposite, navicular to subexplanate, 0.9–1.4 mm, sutures papillate;

staminode 11–14 mm, reaching orifice or exserted, flattened distally, 0.3–0.4 mm diam., tip straight to recurved, distal 7–10 mm densely pilose, hairs golden yellow, to 1 mm;

style 13–15 mm.

5–7 × 3–4 mm, glabrous.

7–8 × 3.5–4.5 mm.

= 16, 32.