Flora of North America species comparison

ascending or erect, rarely decumbent, (8–)16–50(–60) cm, glabrous, not glaucous.

ascending to erect, (10–)17–70 cm, ± retrorsely hairy proximally, also sparsely glandular-pubescent distally, not glaucous.

basal and cauline, or basal not persisting, ± leathery or not, glabrous, not glaucous;

basal and proximal cauline (18–)35–180 × (3–)6–15(–24) mm, blade oblanceolate to oblong or linear, base tapered, margins entire, apex obtuse to acute;

cauline 3–5(or 6) pairs, sessile or proximals sometimes short-petiolate, 34–115 × 2–14 mm, blade oblanceolate to oblong or linear, base tapered, apex obtuse to acute.

basal and cauline, basal sometimes withering by anthesis, not leathery, glabrous (except for puberulent petioles and midveins);

basal and proximal cauline (12–)25–87(–120) × (3–)5–18(–28) mm, blade lanceolate, base tapered, margins entire, apex obtuse to acute;

cauline 4–6 pairs, short-petiolate or sessile, 17–98 × 2–16 mm, blade lanceolate to linear, base tapered to clasping, margins entire, apex acute.

interrupted or continuous, secund, (1–)6–18(–25) cm, axis glabrous or sparsely glandular-pubescent, verticillasters (2 or)3–7(–9), cymes (1 or)2–5-flowered, 2 per node;

proximal bracts lanceolate to linear, 25–70(–95) × (1–)3–12(–20) mm;

peduncles and pedicels glabrous or glandular-pubescent.

interrupted, narrowly conic, (3–)11–30 cm, axis sparsely glandular-pubescent, verticillasters 3–8, cymes 2–4-flowered, 2 per node;

proximal bracts lanceolate to linear, 10–45 × 1–5 mm, margins entire;

peduncles and pedicels ascending, sparsely glandular-pubescent.

calyx lobes ovate to lanceolate, (4–)4.8–11 × 1.3–3.2(–3.7) mm, glabrous or glandular-pubescent;

corolla blue to lavender, with reddish purple nectar guides, ventricose, 18–33 mm, sparsely to moderately glandular-pubescent externally, glabrous, rarely sparsely white-villous, internally abaxially, tube 6–11 mm, throat gradually inflated, slightly constricted at orifice, 6–11 mm diam., rounded abaxially;

stamens: longer pair reaching orifice, pollen sacs divergent to opposite, navicular to navicular-sigmoid, (1.3–)1.5–2.4 mm, dehiscing incompletely, proximal 1/5 indehiscent, connective not splitting, sides moderately pubescent, hairs white, to 0.8 mm, sutures denticulate, teeth to 0.1 mm;

staminode 11–19 mm, reaching orifice, 0.3–0.8 mm diam., tip straight to recurved, distal 3–7 mm sparsely to moderately villous, hairs yellow, to 0.8 mm;

style 12–22 mm.

calyx lobes lanceolate, 3–6 × 1.4–2 mm, glandular-pubescent;

corolla lavender to light blue, with reddish purple nectar guides, funnelform, 17–27 mm, glandular-pubescent externally, sparsely white- or yellowish lanate internally abaxially, tube 5–7 mm, throat gradually inflated, 6–7 mm diam., slightly 2-ridged abaxially;

stamens included, pollen sacs opposite, navicular, 1.3–1.6 mm, dehiscing completely, connective splitting, sides glabrous, sutures papillate;

staminode 12–14 mm, included, 0.3–0.4 mm diam., tip recurved, distal 7–8 mm moderately to densely pilose, hairs yellow-orange, to 1 mm;

style 11–14 mm.

6–10 × 5–6.5 mm.

8–10 × 3.2–4 mm, glabrous.

= 16.