Flora of North America species comparison

ascending to erect, (15–)35–60 cm, retrorsely hairy, hairs pointed, at least proximally, not glaucous.

20–40 cm, glabrous or glabrate.

cauline, opposite, glabrous, glaucous;

cauline 4–8 pairs, short-petiolate or sessile, (15–)20–60 × (2–)6–13(–20) mm, blade elliptic or proximals oblanceolate to lanceolate, base tapered, margins entire, apex obtuse to acute.

10–20 pairs, 5–32 × 0.3–2 mm, blade base tapered, margins glabrous or scabrous, apex acuminate to mucronate.

continuous, cylindric, 5–22 cm, axis glabrous or retrorsely hairy, verticillasters 4–8(–11), cymes 1- or 2(–4)-flowered, 2 per node;

proximal bracts lanceolate to elliptic, 8–66 × 1–13 mm;

peduncles and pedicels ascending to erect, peduncles glabrous or sparsely retrorsely hairy, pedicels papillate or glandular distally.

2–15(–23) cm, verticillasters (2–)5–10(–30), cymes 1- or 2-flowered;

proximal bracts linear, 3–22 × 0.2–1 mm;

peduncles and pedicels glabrous or scabrous.

calyx lobes lanceolate, 4–6(–7) × 1.4–2.6 mm, glabrous;

corolla lavender to light violet or violet, with or without faint lavender nectar guides, ventricose-ampliate, (20–)22–25(–30) mm, glabrous externally, glabrous internally, tube 6–8 mm, throat gradually inflated, 7–9 mm diam., 2-ridged abaxially;

stamens: longer pair exserted, filaments glabrous, pollen sacs parallel, 1.5–1.9(–2.1) mm, distal 1/2–2/3 indehiscent, sides glabrous or hispidulous to lanate, hairs white, to 0.5 mm, sutures denticulate, teeth to 0.2 mm;

staminode 12–14 mm, reaching orifice or exserted, 0.6–0.8 mm diam., glabrous;

style 18–20 mm.

calyx lobes ovate, 1–2.7 × 0.9–1.5 mm;

corolla lavender to violet, lined internally abaxially with reddish purple nectar guides, funnelform, 8–14 mm, glandular-pubescent internally in 2 lines on abaxial surface, sometimes also in sinuses of adaxial lobes, tube (1.5–)2–3 mm, throat 3–5 mm diam.;

stamens included or longer pair reaching orifice or barely exserted, pollen sacs 0.4–0.5 mm;

staminode 5–6 mm;

style 7–9 mm.

7–11 × 3.5–4.5 mm.

(4–)5–8 × 3–4 mm.

= 32.

= 16.