Flora of North America species comparison

20–40 cm, glabrous or glabrate.

32–75 cm.

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

cauline 7–11 pairs, 16–50 × 10–28 mm, base tapered to truncate, apex obtuse to acute.

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.

6–18 cm, verticillasters 2–4, cymes (1 or)2 or 3(or 4)-flowered;

proximal bracts ovate to lanceolate, 4–10 × 3–10 mm;

peduncles and pedicels retrorsely hairy.

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.

calyx lobes ovate to lanceolate, 3–5 × 1.3–2.2 mm;

corolla with lavender or violet nectar guides, 20–25 mm, sparsely white-lanate internally abaxially, tube 6–7 mm, throat 8–10 mm diam.;

pollen sacs 1.1–1.4 mm;

staminode 17–19 mm, distal 2–4 mm sparsely villous, hairs white, to 2 mm;

style 14–15 mm.

(4–)5–8 × 3–4 mm.

7–9 × 4–7 mm.

= 16.