Flora of North America species comparison

ascending to erect, (8–)15–50 cm, retrorsely hairy, not glaucous.

ascending to erect, 20–65 cm, glabrous or retrorsely hairy, hairs ± pointed, sometimes glaucous.

basal and cauline, basal sometimes absent, not leathery, retrorsely hairy, not glaucous;

basal and proximal cauline 16–60(–80) × 1–3(–4) mm, blade linear, base tapered, margins entire, apex obtuse to acute;

cauline 6–11 pairs, sessile, (2–)10–75 × (0.2–)0.5–3 mm, blade linear, base tapered, apex acuminate.

essentially cauline, basal absent or essentially so, opposite, glabrous, sometimes glaucous distally or abaxially;

cauline (3–)6–10 pairs, petiolate or sessile, (20–)40–80(–105) × (2–)4–15 mm, blade spatulate to oblanceolate or lanceolate, base tapered, margins entire, apex rounded to obtuse or acute.

interrupted, secund, (2–)5–25 cm, axis glabrous or puberulent, verticillasters 3–10, cymes 1- or 2-flowered, 1 or 2 per node;

proximal bracts linear, 4–30 × 0.5–2 mm;

peduncles and pedicels glabrous or puberulent.

interrupted, cylindric, (3–)7–28 cm, axis glandular-pubescent, usually sparsely so proximally, verticillasters 3–6(–9), cymes 2–4(–7)-flowered, 2 per node;

proximal bracts lanceolate to linear, 14–75 × 1–6 mm;

peduncles and pedicels ascending to erect, glandular-pubescent.

calyx lobes ovate, sometimes obovate or truncate, 3–4.5(–5) × 1.5–2.4 mm, glabrous or sparsely puberulent;

corolla bluish violet to violet, lavender, or purple, with reddish purple nectar guides, ventricose, 17–23 mm, glabrous externally, glabrous internally, tube 5–7 mm, throat gradually inflated, slightly constricted at orifice, (5–)7–9 mm diam., rounded abaxially;

stamens: longer pair exserted, pollen sacs opposite, navicular, 1.2–1.5 mm, dehiscing incompletely, connective not splitting, sides glabrous, sutures papillate;

staminode 12–14 mm, exserted, 0.5–0.8 mm diam., tip straight to recurved, glabrous;

style 13–17 mm.

calyx lobes oblong to lanceolate, 3.5–5.5 × 0.8–1.4 mm, glandular-pubescent;

corolla blue to violet or purple, with or without dark blue nectar guides, funnelform, 15–20(–24) mm, glandular-pubescent externally, glabrous internally or sparsely to densely white- or yellow-pilose abaxially, tube 6–8 mm, throat gradually inflated, 4–5 mm diam., 2-ridged abaxially;

stamens included or longer pair reaching orifice, filaments glabrous, pollen sacs parallel, 1–1.3 mm, distal 1/2 indehiscent, sides glabrous, sutures denticulate, teeth to 0.1 mm;

staminode 8–10 mm, included, 0.3–0.4 mm diam., distal 3–5 mm sparsely to moderately pubescent, hairs yellow, to 0.5 mm;

style 12–15 mm.

7–14 × 4–5 mm.

5–7 × 3.5–4 mm.

= 16.