Flora of North America species comparison

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

decumbent to ascending, 6–20(–25) cm, retrorsely hairy or puberulent, 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.

basal and cauline, not leathery, retrorsely hairy, not glaucous;

basal and proximal cauline 8–40(–60) × 2–7 mm, blade spatulate to oblanceolate, base tapered, margins entire, apex rounded to obtuse or acute;

cauline 2–4 pairs, sessile, 10–38 × 1–6 mm, blade lanceolate, base tapered, apex 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 to ± interrupted, secund, (2–)4–9 cm, axis retrorsely hairy proximally, mostly glandular-pubescent distally, verticillasters (3 or)4–8, cymes 1- or 2-flowered, (1 or)2 per node;

proximal bracts linear, 3–26 × 0.5–2.5 mm;

peduncles and pedicels glandular-pubescent, peduncles also usually retrorsely hairy.

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(–5) × 2–2.9 mm, glandular-pubescent;

corolla blue to violet or purple, with reddish purple nectar guides, ventricose, 13–20 mm, glandular-pubescent externally, glabrous internally, tube 4.5–6 mm, throat gradually inflated, not constricted at orifice, 4–6(–8) mm diam., slightly 2-ridged abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, navicular, 1–1.4 mm, dehiscing incompletely, connective not splitting, sides glabrous, sutures papillate;

staminode 8–10 mm, reaching orifice, 0.5–0.6 mm diam., tip straight, glabrous;

style 11–15 mm.

7–10 × 4.5–5.5 mm.

7–8 × 6–7 mm.