Flora of North America species comparison

ascending to erect, 25–80 cm, retrorsely hairy, hairs pointed, not glaucous.

ascending to erect, 15–65 cm, glabrous, not glaucous.

cauline, whorled, sometimes alternate, glabrate or retrorsely hairy, hairs pointed, not glaucous;

cauline 15–20 pairs, sessile, (5–)10–52 × 1–6(–12) mm, blade linear, sometimes lanceolate, base tapered, margins coarsely serrate-dentate, distals sometimes entire, apex acute.

basal and cauline, not leathery, glabrous or retrorsely hairy, not glaucous;

basal and proximal cauline 12–80 × 4–10(–15) mm, blade spatulate to oblanceolate or lanceolate, base tapered, margins entire, apex rounded to obtuse, or acute;

cauline 3 or 4 pairs, sessile, 12–50(–75) × 1–5 mm, blade oblanceolate to linear, base tapered, apex acute to acuminate.

interrupted, cylindric, 4–35 cm, axis glandular-pubescent, verticillasters 5–10, cymes 1–4-flowered, 1 or 2(or 3) per node;

proximal bracts linear, rarely lanceolate, 5–34 × 1–6 mm;

peduncles and pedicels spreading to ascending, peduncles retrorsely hairy and, sometimes, glandular-pubescent distally, pedicels glandular-pubescent.

interrupted, secund, 2–25(–47) cm, axis glabrous, verticillasters 4–14, cymes 1- or 2(or 3)-flowered, 1 or 2 per node;

proximal bracts linear, 6–15(–68) × 1–2 mm;

peduncles and pedicels glabrous.

calyx lobes lanceolate, 3.5–5.8 × 1–2 mm, glandular-pubescent;

corolla bluish lavender to lavender, pinkish, pale purple, or violet, with reddish purple nectar guides, funnelform, 13–19 mm, glandular-pubescent externally, glabrous internally or sparsely white-lanate abaxially, tube 5–7 mm, throat gradually inflated, 5–6 mm diam., rounded abaxially;

stamens included, filaments glabrous or white-pubescent distally, pollen sacs parallel, 0.9–1.3 mm, distal 2/3 indehiscent, sides glabrous, sutures denticulate, teeth to 0.1 mm;

staminode 9–11 mm, exserted, 0.2–0.3 mm diam., distal 6–7 mm moderately to densely lanate, hairs yellow, to 2.5 mm;

style 8–10 mm.

calyx lobes ovate, 2.6–4 × 1.5–2.2 mm, glabrous;

corolla blue to lavender, with faint reddish purple nectar guides, ventricose, 18–23(–25) mm, glabrous externally, sparsely white-villous internally abaxially, tube 7–9 mm, throat gradually to abruptly inflated, not constricted at orifice, 7–10 mm diam., slightly 2-ridged abaxially;

stamens reaching orifice or longer pair slightly exserted, pollen sacs opposite, navicular, 1.2–1.8 mm, dehiscing incompletely, proximal 1/5 sometimes indehiscent, connective not splitting, sides lanate, rarely glabrous, hairs white, to 0.9 mm, sutures denticulate, teeth to 0.1 mm;

staminode 9–11 mm, reaching orifice, 0.5–0.7 mm diam., tip straight, glabrous;

style 12–17 mm.

4.5–7 × 3–4.5 mm.

6.9–13 × 4.5–6.5 mm.

= 16.