Flora of North America species comparison

ascending to erect, 40–115 cm, glabrous or retrorsely hairy, not glaucous.

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

basal and cauline, basal sometimes withering by anthesis, not leathery, glabrous or puberulent;

basal and proximal cauline 40–150 × 7–48 mm, blade oblanceolate to lanceolate, base tapered, margins entire or ± serrate, apex obtuse to acute;

cauline 3–7 pairs, sessile or proximals sometimes petiolate, 18–128 × 8–28 mm, blade lanceolate, proximals sometimes oblanceolate, base clasping, sometimes tapered, margins entire or ± serrate, apex acute.

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, narrowly conic, (3–)8–20 cm, axis glabrous or retrorsely hairy and sparsely glandular-pubescent, verticillasters 2–6, cymes (2–)4–11-flowered, 2 per node;

proximal bracts lanceolate to linear, 8–38 × 1–3 mm, margins entire;

peduncles and pedicels spreading or ascending, glabrous or retrorsely hairy and sparsely glandular-pubescent.

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, 3–6 × 1.5–2.1 mm, glabrous or glandular-pubescent;

corolla pale lavender to violet, with reddish purple nectar guides, ventricose, 15–22 mm, glandular-pubescent externally, sparsely to moderately white-lanate internally abaxially, tube 5–6 mm, throat abruptly inflated, 5–8 mm diam., slightly 2-ridged abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, navicular, 1–1.2 mm, dehiscing completely, connective splitting, sides glabrous, sutures papillate;

staminode 10–12 mm, exserted, 0.4–0.5 mm diam., tip straight to slightly recurved, distal 5–7 mm moderately to densely pubescent, hairs yellow, to 2.3 mm;

style 12–15 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.

5–8 × 3.5–5 mm, glabrous.

3.5–5 × 3–4 mm.