Flora of North America species comparison

20–90 cm, retrorsely hairy, sometimes glabrescent.

ascending to erect, (20–)35–70(–90) cm, glabrous or ± puberulent proximally, rarely distinctly puberulent, not glaucous.

glabrous or retrorsely hairy;

basal and proximal cauline 16–80 × 3–10 mm, blade oblanceolate to lanceolate, base tapered, margins entire, apex obtuse to acute;

cauline 6–15(–20) pairs, 45–150 × 1–6 mm, blade linear, base tapered, apex acute to acuminate.

basal and cauline, ± leathery or not, glabrous except for antrorsely-scabrous margins or ± puberulent proximally, rarely distinctly puberulent, not glaucous;

basal and proximal cauline (30–)50–150 × 5–16(–20) mm, blade oblanceolate, base tapered, margins entire, apex rounded to obtuse;

cauline 4–8 pairs, sessile, 40–100 × 2–7(–10) mm, blade lanceolate to linear, base tapered, apex acuminate.

cylindric to ± secund, 10–35 cm, axis glabrous, verticillasters (2–)5–8, cymes (1 or)2–4(or 5)-flowered;

proximal bracts linear, 8–30(–80) × 0.5–2 mm;

peduncles and pedicels glabrous or pedicels rarely glandular-pubescent.

interrupted to ± continuous, secund, (3–)9–40 cm, axis glabrous, verticillasters 4–10(–13), cymes 1- or 2(–4)-flowered, 2 per node;

proximal bracts lanceolate to linear, 10–65 × 1–8 mm, apex acuminate;

peduncles and pedicels glabrous, peduncles to 27 mm, pedicels 1–20 mm.

calyx lobes elliptic to ovate, 4.2–7(–8.5) × 2–2.6(–3.5) mm, glabrous, rarely glandular-pubescent;

corolla violet to blue, lavender, or purple, lined internally abaxially with reddish purple nectar guides, ventricose, 23–37 mm, glabrous internally, tube 7–10 mm, throat abruptly inflated, 9–10 mm diam., slightly 2-ridged abaxially;

stamens included, pollen sacs parallel to divergent, 1.6–1.8 mm, sutures denticulate, teeth to 0.2 mm;

staminode 20–23 mm, exserted, 1.8–2.6 mm diam.;

style 20–24 mm.

calyx lobes ovate, (2.5–)3–5 × 1.3–2.5 mm, apex acute, sometimes acuminate or obtuse, glabrous;

corolla purple to violet or blue, with violet nectar guides, ventricose-ampliate, (18–)24–32 mm, glabrous externally, glabrous internally, tube 4–7 mm, throat gradually inflated, slightly constricted at orifice, 6–10(–12) mm diam., slightly 2-ridged abaxially;

stamens: longer pair slightly exserted, pollen sacs divergent to opposite, navicular-sigmoid, 1.7–2.4 mm, dehiscing incompletely, proximal 1/4 sometimes indehiscent, connective not splitting, sides moderately to densely lanate to villous, hairs white, to 1.8 mm, sutures denticulate, teeth to 0.1 mm;

staminode 11–14 mm, included, 0.5–0.8 mm diam., tip straight, glabrous or distal 1–5 mm sparsely villous, hairs yellow or orange, to 0.7 mm;

style 17–21 mm.

9–15 × 6–9 mm.

7–13 × 4–7 mm.

= 16.