Flora of North America species comparison

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

erect, (50–)80–120 cm, glaucous or not.

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.

basal and proximal cauline 40–100 × 8–50 mm, blade oblanceolate to elliptic, base tapered, margins coarsely dentate, apex obtuse to acute;

cauline 5–8 pairs, sessile, 32–120 × 10–45 mm, blade ovate to lanceolate, base sessile, proximals usually auriculate-clasping, distal ones usually cordate-clasping, margins dentate to serrate, apex acute to acuminate.

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.

interrupted, cylindric, 20–80 cm, axis glabrous or glandular-pubescent distally, verticillasters 9–16, cymes (1–)3–8(–13)-flowered;

proximal bracts ovate to lanceolate, 15–35 × 4–25 mm;

peduncles and pedicels spreading to ascending, glabrous or glandular-pubescent.

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 round to ovate or lanceolate, 3.5–5.5 × 2.5–3.2 mm, glabrous or glandular-pubescent;

corolla lavender, blue, pink, or purple, with reddish purple nectar guides, strongly bilabiate, ventricose-ampliate, 24–34 mm, glandular-pubescent externally, glabrous or sparsely white-lanate internally abaxially, glandular-pubescent adaxially, tube 7–9 mm, length 1.6–2 times calyx lobes, throat abruptly inflated, not constricted at orifice, 8–14 mm diam., rounded abaxially;

stamens included or longer pair reaching orifice, filaments of shorter pair glandular-puberulent proximally, pollen sacs navicular, 1.8–2.4 mm, sutures papillate or denticulate, papillae or teeth to 0.1 mm;

staminode 15–16 mm, included, 0.5–0.9 mm diam., tip straight, glabrous distally or distal 1–2 mm sparsely pilose, hairs yellow, to 0.5 mm [5–6 mm moderately pilose, hairs yellow, to 1.5 mm], proximal 1–2 mm glandular-pubescent;

style 15–19 mm, glabrous.

7–11 × 3.5–4.5 mm.

9–14 × 6–8 mm, glabrous.

= 32.

= 16.