Flora of North America species comparison

ascending to erect, 14–40(–60) cm, glabrous.

prostrate to ascending, to 1 cm, scabrous or puberulent.

basal and cauline, glabrous;

basal and proximal cauline 40–65(–110) × 8–20(–30) mm, blade obovate, base tapered, apex obtuse to acute, sometimes mucronate;

cauline 2–4 pairs, sessile, (9–)12–60 × 7–26 mm, blade lanceolate to ovate or elliptic, base tapered to clasping or cordate-clasping, apex obtuse to acute, sometimes mucronate.

essentially basal, not leathery, scabrous;

basal and proximal cauline sessile, 15–25(–35) × 1.5–2.6(–4.5) mm, blade oblanceolate to linear, base tapered, margins entire or obscurely dentate distally, apex obtuse to acute.

interrupted or ± continuous, secund, sometimes cylindric, 5–23 cm, axis glabrous, verticillasters 4–8, cymes 1–3(or 4)-flowered;

proximal bracts ovate to lanceolate, (3–)7–38 × (1–)2–18 mm;

peduncles and pedicels glabrous, peduncles to 28 mm.

essentially absent, 0.1–0.6 cm, axis puberulent, verticillasters 1 or 2, cymes 1(–3)-flowered, 1(or 2) per node;

proximal bracts oblanceolate to linear, 8–20 × 1–3 mm;

peduncles and pedicels glandular-pubescent and scabrous.

calyx lobes ovate to lanceolate, 5–6.7(–7.2) × 2–3(–3.7) mm, margins entire or erose, broadly scarious, glabrous;

corolla lavender to violet, blue, pinkish blue, or white, with or without reddish violet nectar guides, tubular-funnelform, 17–20(–22) mm, glabrous externally, sparsely white-villous internally abaxially or glabrous, tube 5–8 mm, throat gradually inflated, 5–6 mm diam., rounded abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, 1.1–1.6 mm, sutures papillate;

staminode 8–9 mm, reaching orifice or slightly exserted, 0.6–1 mm diam., tip strongly recurved, distal 3–4 mm sparsely to densely villous, hairs mostly along margins, yellowish, to 1 mm;

style 10–12 mm.

calyx lobes lanceolate, 5–6.5 × 1–1.8 mm, glandular-pubescent and scabrous;

corolla lavender to bluish lavender, without nectar guides, funnelform, 14–18 mm, yellowish or whitish villous internally abaxially, tube 5–6 mm, throat gradually inflated, not constricted at orifice, 4.5–6 mm diam., slightly 2-ridged abaxially;

stamens: longer pair reaching orifice, pollen sacs widely divergent to opposite, navicular, 0.8–1.3 mm, dehiscing completely, sutures papillate;

staminode 8–11 mm, prominently exserted, 0.5–0.8 mm diam., tip straight to recurved, distal 5–7 mm densely pubescent, hairs orange, to 1 mm;

style 9–12 mm.

9–12 × 5–7 mm.

3.5–5 × 3–4 mm.

3.5–5 mm.