Flora of North America species comparison

ascending, (10–)50–65(–80) cm, glabrous or puberulent to pubescent, not glaucous.

erect, (6–)10–45 cm, retrorsely hairy, also glandular-pubescent distally, not glaucous.

basal and cauline, or basal absent or reduced, not leathery, glabrous or puberulent to pubescent, not glaucous;

basal and proximal cauline 20–80(–155) × 5–20(–45) mm, blade obovate to oblanceolate or lanceolate, base tapered, margins entire, usually undulate, apex obtuse to acute, sometimes mucronate;

cauline (2 or)3–6(–8) pairs, sessile, 27–120(–150) × (6–)22–35(–43) mm, blade lanceolate, base truncate to cordate, apex obtuse to acute.

basal and cauline, not leathery, proximals usually retrorsely hairy proximally, especially along midveins and margins, mostly glabrate distally, distals retrorsely hairy and, sometimes, sparsely glandular-pubescent, sometimes ± glaucescent;

basal and proximal cauline 15–75 × (2–)5–19 mm, blade spatulate to oblanceolate or elliptic, base tapered, margins entire, apex rounded to obtuse or acute, sometimes mucronate;

cauline 2–5 pairs, sessile, 11–70 × (1–)4–15 mm, blade of proximal leaves oblanceolate to lanceolate, distal leaves lanceolate, base tapered to clasping, margins entire, rarely ± denticulate distally, apex acute to acuminate.

continuous, secund, (3–)6–26(–30) cm, axis glabrous or puberulent, verticillasters (3–)5–12, cymes 2–4-flowered, 2 per node;

proximal bracts ovate to lanceolate, 14–100 × 2–36 mm;

peduncles and pedicels glabrous or puberulent, peduncles to 71 mm, pedicels 4–14 mm.

interrupted, secund, (1–)3–24(–30) cm, axis glandular-pubescent, verticillasters (2 or)3–7, cymes 1–4-flowered, (1 or)2 per node;

proximal bracts lanceolate to linear, 7–38(–60) × 1–7 mm, margins entire;

peduncles and pedicels erect, glandular-pubescent.

calyx lobes ovate to orbiculate, 2–11 × 1.3–5.5 mm, glabrous or puberulent;

corolla blue to violet, with reddish purple nectar guides, ventricose, 24–48 mm, glabrous externally, glabrous internally or sparsely to moderately white-lanate internally abaxially, tube 5–12 mm, throat gradually inflated, slightly constricted at orifice, 8–13(–18) mm diam., rounded abaxially;

stamens included or longer pair reaching orifice, pollen sacs divergent, navicular, 1.4–2.5(–2.8) mm, dehiscing incompletely, connective not splitting, sides sparsely to moderately hirsute, hairs white or tan, to 0.5 mm, rarely glabrous, sutures denticulate, teeth to 0.2 mm;

staminode (15–)18–22 mm, included or barely exserted, 0.6–1.3 mm diam., tip straight to recurved, rounded to distinctly bifurcate at apex, glabrous or distal 1–2 mm sparsely lanate, hairs pale yellow, to 1.5 mm;

style 18–20 mm.

calyx lobes lanceolate, 2.8–6 × 0.9–2 mm, glandular-pubescent;

corolla blue to violet-blue, with reddish purple nectar guides, tubular to tubular-funnelform, 11–20 mm, glandular-pubescent externally, sparsely to moderately white-villous to white-lanate internally abaxially, tube 5–7 mm, throat slightly inflated, 3–6 mm diam., 2-ridged abaxially;

stamens included, pollen sacs opposite, navicular, 0.8–1.2 mm, dehiscing completely, connective splitting, sides glabrous, sutures papillate;

staminode 10–12 mm, included or slightly exserted, 0.3–0.4 mm diam., tip straight to slightly recurved, distal 3–6 mm densely pilose, hairs golden, to 2 mm;

style 9–13 mm.

10–17 × 5–8 mm.

5–7 × 3–4.5 mm, glabrous.

= 16.