Flora of North America species comparison

decumbent to erect, 3–10(–15) cm, glabrous.

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

basal and cauline, glabrous;

basal and proximal cauline (10–)20–35 × 5–17 mm, blade obovate, base tapered, apex rounded to obtuse;

cauline 1–3 pairs, sessile, 10–29 × 5–12 mm, blade ovate to elliptic, base tapered, apex rounded to 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.

continuous, cylindric, 1–6 cm, axis glabrous, verticillasters 1–5(or 6), cymes 3–5-flowered;

proximal bracts ovate, 6–14 × 3–13 mm;

peduncles and pedicels glabrous.

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, (3–)4–5.5 × 1.7–2.2 mm, margins entire or erose, narrowly to broadly scarious, glabrous;

corolla blue to violet or lavender, with reddish purple nectar guides, tubular-funnelform, 13–17(–19) mm, glabrous externally, sparsely white-villous internally abaxially, tube 4–5 mm, throat gradually inflated, 4–5 mm diam., rounded abaxially;

stamens included, pollen sacs divergent to opposite, 0.8–1.2 mm, sutures smooth or obscurely papillate;

staminode 6–8 mm, included, 0.8–1 mm diam., tip recurved, distal 4–5 mm moderately to densely pubescent, hairs golden yellow, to 1 mm;

style 7–8 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.

5–7 × 5–6 mm.

3.5–5 × 3–4 mm.