Flora of North America species comparison

decumbent, ascending, or erect, 5–65 cm, glabrous or retrorsely hairy, sometimes also glandular-pubescent distally, not glaucous.

ascending to erect, 16–50 cm, puberulent to retrorsely hairy, hairs pointed, not glaucous.

basal and cauline, not leathery, glabrous;

basal and proximal cauline 5–140 × 3–20 mm, blade spatulate to oblanceolate or elliptic, base tapered, margins entire, apex rounded to obtuse or acute;

cauline 2–5 pairs, short-petiolate or sessile, 10–60(–70) × 1–14 mm, blade oblong to oblanceolate or lanceolate, base tapered to clasping, margins entire, apex obtuse to acute.

cauline, opposite, puberulent, hairs pointed, or glabrous, not glaucous;

cauline 8–12 pairs, sessile, 12–70 × 0.5–1(–2) mm, blade linear, base not tapered, margins entire, apex acute.

interrupted, cylindric, 1–12 cm, axis ± glandular-pubescent, verticillasters 1–6, cymes (1 or)2–6-flowered, 2 per node;

proximal bracts lanceolate, 4–35 × 1–6 mm, margins entire;

peduncles and pedicels erect, ± glandular-pubescent.

interrupted, cylindric, 9–22 cm, axis glandular-pubescent, verticillasters 1–5, cymes 1–3-flowered, (1 or)2 per node;

proximal bracts linear, 9–30 × 0.5–1 mm;

peduncles and pedicels spreading to ascending, glandular-pubescent.

calyx lobes oblong to lanceolate, 4–6 × 0.7–1.2 mm, glandular-pubescent;

corolla lavender to blue, violet, or purple, essentially without nectar guides, tubular-funnelform, 10–16 mm, glandular-pubescent externally, moderately yellow-pilose to yellow-lanate internally abaxially, tube 5–7 mm, throat slightly inflated, 3–5 mm diam., prominently 2-ridged abaxially;

stamens: longer pair reaching orifice or slightly exserted, pollen sacs opposite, navicular, 0.6–0.8(–1) mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth;

staminode 6–9 mm, included, 0.3–0.6 mm diam., tip straight to recurved, glabrous or distal 1–3 mm sparsely to moderately pilose, hairs yellow, to 0.5 mm;

style 9–12 mm.

calyx lobes ovate to lanceolate, 2–4.5 × 0.7–1.7 mm, glandular-pubescent;

corolla light purple to violet or purple, without nectar guides, funnelform, 13–18 mm, glandular-pubescent externally, glabrous internally, tube 3–4 mm, throat gradually inflated, 5–7 mm diam., 2-ridged abaxially;

stamens included or longer pair reaching orifice, filaments glabrous, pollen sacs parallel, 1.2–1.6 mm, distal 1/2 indehiscent, sides pubescent, hairs white, to 0.5 mm near filament attachment, sutures denticulate, teeth to 0.2 mm;

staminode 10–12 mm, included or reaching orifice, 0.3–0.5 mm diam., glabrous;

style 11–15 mm.

4–6 × 2.5–3.5 mm, glabrous.

5–7.5 × 2.5–4 mm.

= 16.