Flora of North America species comparison

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

ascending to erect, 7–27 cm, glabrous or ± puberulent distally or at nodes, 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.

essentially cauline, basal leaves absent or reduced, ± leathery, glabrous, not glaucous;

basal and proximal cauline 12–90(–105) × 3–23 mm, blade elliptic-lanceolate to oblanceolate, base tapered, margins entire, apex obtuse to acute;

cauline 2–4 pairs, petiolate or sessile, 35–95(–107) × 11–30 mm, blade elliptic-lanceolate to oblanceolate, base tapered to truncate, apex obtuse to 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.

continuous, ± secund, 3–15 cm, axis glabrous or ± glandular, verticillasters 1–7, cymes 2–8-flowered, 2 per node;

proximal bracts ovate to elliptic, 16–85 × 7–31 mm;

peduncles and pedicels glabrous or ± glandular, peduncles to 15 mm, pedicels 1–3 mm.

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 ovate to lanceolate, 6.5–12 × 2.8–4.5 mm, margins erose, apex acuminate to caudate, ± glandular;

corolla blue to violet, with violet nectar guides, ventricose, 18–33 mm, glabrous externally, glabrous internally, tube 7–9 mm, throat abruptly inflated, slightly constricted at orifice, 7–9 mm diam., rounded abaxially;

stamens included or longer pair reaching orifice, pollen sacs divergent to nearly opposite, navicular-sigmoid, (1.8–)2.2–2.6 mm, dehiscing incompletely, connective not splitting, sides sparsely to moderately hispidulous or pubescent, hairs white, to 0.3 mm;

sutures denticulate, teeth to 0.1 mm;

staminode 13–17 mm, included, 0.5–0.9 mm diam., tip straight, glabrous or distal 1–3 mm pubescent, hairs yellow, to 0.5 mm;

style 17–20 mm.

6–10 × 5–6.5 mm.

8–12 × 5–8 mm.