Flora of North America species comparison

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

ascending to erect, 4–20(–25) cm, retrorsely hairy.

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, retrorsely hairy or basal and proximal cauline sometimes glabrate or glabrous abaxially;

basal and proximal cauline petiolate, 15–50(–60) × 5–18(–23) mm, blade oblanceolate to elliptic, base tapered, margins entire or remotely serrate distally, apex obtuse to acute;

cauline 2–4 pairs, sessile, 15–60 × 3–8 mm, blade oblanceolate to lanceolate, rarely pandurate, base tapered to clasping, margins entire or remotely serrate, apex obtuse to acute.

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.

continuous, cylindric to ± secund, 1–13 cm, axis glandular-pubescent, verticillasters 2–6, cymes 2- or 3(or 4)-flowered, 2 per node;

proximal bracts lanceolate, rarely oblanceolate, 12–42(–76) × 1–12(–16) mm;

peduncles and pedicels 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, 6–10(–12) × 1.6–2.6(–3) mm, glandular-pubescent;

corolla lavender to purple or pink, with reddish purple nectar guides, ventricose, 18–28 mm, densely white-lanate internally abaxially, tube (6–)8–12 mm, throat abruptly inflated, prominently constricted at orifice, 7–12 mm diam., rounded abaxially;

stamens: longer pair reaching orifice, pollen sacs opposite, explanate, 0.8–1.2 mm, dehiscing completely, sutures smooth;

staminode 16–18 mm, prominently exserted, 0.2–0.3 mm diam., tip coiled, distal 8–11 mm densely pilose, hairs orange or yellowish orange, to 1.3 mm;

style 15–23 mm.

10–17 × 5–8 mm.

7–11 × 5–7 mm.