Flora of North America species comparison

ascending to erect, 13–50(–70) cm, glabrous, glaucous.

decumbent to ascending, 6–20(–25) cm, retrorsely hairy or puberulent, not glaucous.

basal and cauline, basal sometimes few, opposite, glabrous, glaucous;

basal and proximal cauline 15–60 × 2–10(–20) mm, blade obovate to oblanceolate or linear, base tapered, margins entire, apex obtuse to acute;

cauline 3–20 pairs, sessile or proximals short-petiolate, 10–90 × 2–20 mm, blade elliptic to ovate, lanceolate, or linear, base tapered to clasping or cordate-clasping, margins entire, apex obtuse to 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 or continuous, secund, (3–)6–31 cm, axis glabrous, verticillasters 3–10, cymes 1–3(or 4)-flowered, 2 per node;

proximal bracts ovate to lanceolate, 4–50 × 1–32 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 ovate to oblong or obovate, 2.5–6.5 × 1.4–3.2 mm, glabrous;

corolla violet to blue or purple, with or without purple nectar guides, funnelform to ventricose, 18–35 mm, glabrous externally, glabrous internally, tube 7–9 mm, throat gradually inflated, 8–10 mm diam., slightly 2-ridged abaxially;

stamens: longer pair reaching orifice or exserted, filaments glabrous, pollen sacs parallel, 1.8–3.5 mm, distal 1/3–1/2 indehiscent, sides hispidulous to pilose, hairs white, to 0.8 mm near filament attachment, sutures denticulate, teeth to 0.3 mm;

staminode 12–19 mm, included, 0.4–0.6 mm diam., glabrous;

style 16–22 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.

7–11 × 14–6 mm.

7–8 × 6–7 mm.