Flora of North America species comparison

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

decumbent to ascending, 7–25(–30) cm, retrorsely hairy, hairs pointed, often densely so, not glaucous.

cauline, opposite, glabrous, glaucous;

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

cauline, opposite, retrorsely hairy or puberulent, hairs pointed, not glaucous;

cauline (2 or)3–6 pairs, short-petiolate or sessile, 17–50(–80) × 2–7(–10) mm, blade oblanceolate to linear, base tapered, margins entire, apex obtuse to acute.

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.

continuous, cylindric, 3–15 cm, axis retrorsely hairy or puberulent, verticillasters 4–10, cymes (1 or)2–4-flowered, 2 per node;

proximal bracts oblanceolate to lanceolate, 11–40 × 2–8 mm;

peduncles and pedicels ascending to erect, peduncles puberulent, pedicels puberulent and glandular-pubescent, at least distally.

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 lanceolate, 4–6 × 1.4–1.9 mm, glandular-pubescent;

corolla violet to purple, reddish purple, or blue, without nectar guides, ventricose, 15–22 mm, glandular-pubescent externally, glabrous internally, tube 5–7 mm, throat gradually inflated, 4.5–7 mm diam., slightly 2-ridged abaxially;

stamens included or longer pair reaching orifice, filaments glabrous, pollen sacs parallel, 1–1.5(–1.8) mm, distal 1/2–2/3 indehiscent, sides glabrous, sutures denticulate, teeth to 0.1 mm;

staminode 11–13 mm, reaching orifice or barely exserted, 0.4–0.5 mm diam., glabrous;

style 12–16 mm.

7–10 × 4.5–5.5 mm.

6–10 × 4–6 mm.