Flora of North America species comparison

ascending to erect, 40–90 cm, glabrous, glaucous.

ascending to erect, 30–150 cm, glaucous, sometimes not.

cauline, opposite, glabrous, glaucous;

cauline 6–14 pairs, sessile, 30–85(–102) × 3–13 mm, blade elliptic, base tapered, margins entire, apex acute.

basal and proximal cauline 35–80 × 18–30 mm, blade spatulate to ovate or elliptic, base tapered, margins coarsely serrate to coarsely dentate, apex rounded to acute;

cauline 4–7 pairs, sessile, 18–80 × 10–40 mm, blade ovate-oblong to triangular-ovate, base connate-perfoliate, margins finely serrate, apex obtuse to acute or acuminate.

interrupted, cylindric, 6–30 cm, axis glabrous, verticillasters (5–)8–14, cymes 1(or 2)-flowered, 2 per node;

proximal bracts narrowly elliptic to linear, 8–45 × 1–8 mm;

peduncles and pedicels ascending to erect, glabrous.

interrupted, secund, 16–45 cm, axis glabrous or sparsely glandular-pubescent distally, verticillasters 8–14, cymes 2–6-flowered;

proximal bracts depressed-ovate to ovate or triangular, 12–50 × 15–55 mm;

peduncles and pedicels erect, sparsely glandular-pubescent.

calyx lobes obovate to ovate or elliptic, 1.8–3.2 × 1.5–2.2 mm, glabrous or minutely ciliolate distally;

corolla light lavender to violet or purple, with violet nectar guides, weakly ventricose, 22–26(–28) mm, glabrous externally, glabrous internally, tube 7–9 mm, throat gradually inflated, 7–9 mm diam., 2-ridged abaxially;

stamens included or longer pair exserted, filaments glabrous, pollen sacs parallel to slightly divergent, 1.5–2 mm, distal 2/3 indehiscent, sides glabrous, sutures denticulate, teeth to 0.1 mm;

staminode 15–16 mm, included, 0.5–0.6 mm diam., glabrous;

style 16–20 mm.

calyx lobes ovate, 3–4.2(–5) × 1.5–2.5 mm, glandular-pubescent;

corolla rose to magenta or pinkish lavender, without nectar guides, bilabiate, funnelform to slightly ventricose, 16–20 mm, glandular-pubescent externally, glandular-pubescent internally, tube 5–6 mm, length 1.7–2 times calyx lobes, throat gradually inflated, not constricted at orifice, 4–6 mm diam., rounded abaxially;

stamens included, filaments glabrous, pollen sacs explanate, 1.1–1.5 mm, sutures smooth;

staminode 9–13 mm, included, 0.2–0.3 mm diam., tip straight, glabrous;

style 10–12 mm, glabrous.

7–10 × 4.5–5.5 mm.

7–10 × 4–6 mm, glabrous.