Flora of North America species comparison

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

ascending or erect, rarely decumbent, (8–)16–50(–60) 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, or basal not persisting, ± leathery or not, glabrous, not glaucous;

basal and proximal cauline (18–)35–180 × (3–)6–15(–24) mm, blade oblanceolate to oblong or linear, base tapered, margins entire, apex obtuse to acute;

cauline 3–5(or 6) pairs, sessile or proximals sometimes short-petiolate, 34–115 × 2–14 mm, blade oblanceolate to oblong or linear, base tapered, apex obtuse to acute.

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 or continuous, secund, (1–)6–18(–25) cm, axis glabrous or sparsely glandular-pubescent, verticillasters (2 or)3–7(–9), cymes (1 or)2–5-flowered, 2 per node;

proximal bracts lanceolate to linear, 25–70(–95) × (1–)3–12(–20) mm;

peduncles and pedicels glabrous or glandular-pubescent.

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 to lanceolate, (4–)4.8–11 × 1.3–3.2(–3.7) mm, glabrous or glandular-pubescent;

corolla blue to lavender, with reddish purple nectar guides, ventricose, 18–33 mm, sparsely to moderately glandular-pubescent externally, glabrous, rarely sparsely white-villous, internally abaxially, tube 6–11 mm, throat gradually inflated, slightly constricted at orifice, 6–11 mm diam., rounded abaxially;

stamens: longer pair reaching orifice, pollen sacs divergent to opposite, navicular to navicular-sigmoid, (1.3–)1.5–2.4 mm, dehiscing incompletely, proximal 1/5 indehiscent, connective not splitting, sides moderately pubescent, hairs white, to 0.8 mm, sutures denticulate, teeth to 0.1 mm;

staminode 11–19 mm, reaching orifice, 0.3–0.8 mm diam., tip straight to recurved, distal 3–7 mm sparsely to moderately villous, hairs yellow, to 0.8 mm;

style 12–22 mm.

4.5–7 × 3–4.5 mm.

6–10 × 5–6.5 mm.

= 16.