Flora of North America species comparison

ascending to erect, (18–)40–80(–120) cm, glabrous, sometimes retrorsely hairy proximally, not glaucous.

decumbent, ascending, or erect, 3–12 cm, retrorsely hairy.

basal and cauline, ± leathery or not, glabrous or sparsely retrorsely hairy, rarely densely retrorsely hairy, not glaucous;

basal and proximal cauline 40–80(–120) × 7–20(–30) mm, blade obovate to oblanceolate, base tapered, margins entire, apex obtuse to acute;

cauline 5–7(or 8) pairs, sessile, 38–110 × 1–10 mm, blade oblanceolate to linear, base tapered, apex obtuse to acute.

basal and cauline or mostly basal, not leathery, retrorsely hairy;

basal and proximal cauline short-petiolate or sessile, 7–35(–50) × 1–4 mm, blade oblanceolate to linear, base tapered, margins entire, apex obtuse to acute;

cauline 1–3 pairs, sessile, 12–30 × 1–4 mm, blade oblanceolate to oblong or linear, usually arcuate, base tapered, margins entire, apex acute.

erupted, secund, sometimes subsecund, (12–)15–32 cm, axis glabrous, verticillasters 6–12, cymes 1–2(–5)-flowered, 2 per node;

proximal bracts linear, (6–)26–84 × 1–4 mm;

peduncles and pedicels glabrous.

interrupted to compact, cylindric, 1–6 cm, axis retrorsely hairy, verticillasters 1–6, cymes 1- or 2-flowered, 1 or 2 per node;

proximal bracts oblanceolate to lanceolate, 7–30 × 1–3 mm;

peduncles and pedicels retrorsely hairy and sparsely glandular-pubescent.

calyx lobes ovate, (2.2–)3.5–6(–7) × 2.1–2.7 mm, glabrous;

corolla blue to pinkish blue or lavender, with violet nectar guides, ventricose, 25–35(–38) mm, glabrous externally, glabrous internally, tube 8–11(–14) mm, throat abruptly inflated, slightly constricted at orifice, 9–13 mm diam., slightly 2-ridged abaxially;

stamens: longer pair exserted, pollen sacs divergent to nearly opposite, navicular-sigmoid, 2–2.5(–2.8) mm, dehiscing incompletely, proximal 1/5 indehiscent, connective not splitting, sides densely villous or lanate, hairs white, to 2.5 mm, sutures smooth, papillate, or denticulate, teeth to 0.1 mm;

staminode 12–17 mm, included, 0.8–1 mm diam., tip straight, glabrous or distal 1–2 mm sparsely pilose, hairs white, to 0.5 mm;

style 16–25 mm.

calyx lobes lanceolate, 4.5–7 × 1.5–2 mm, puberulent and glandular-pubescent;

corolla blue to violet, with reddish purple nectar guides, tubular-funnelform, 15–20(–23) mm, glabrous or sparsely white-lanate internally abaxially, tube 4–6 mm, throat gradually inflated, not constricted at orifice, 6–8 mm diam., rounded abaxially;

stamens included, pollen sacs opposite, navicular, 0.9–1.2 mm, dehiscing completely, sutures papillate;

staminode 9–12 mm, included, 0.5–0.6 mm diam., tip recurved, distal 6–8 mm sparsely pilose, hairs yellow, to 0.5 mm;

style 9–11 mm.

(7–)10–15 × 4–5 mm.

4–7 × 3.5–5.5 mm.