Flora of North America species comparison

prostrate, decumbent, ascending, or erect, 2–14(–20) cm, pubescent to densely retrorsely hairy.

ascending to erect, 25–40 cm, retrorsely hairy proximally, glandular-pubescent distally, not glaucous.

basal and cauline, not leathery, retrorsely hairy;

basal and proximal cauline petiolate, (5–)10–40(–55) × 4–14 mm, blade spatulate to oblanceolate, base tapered, margins entire, apex obtuse to acute, rarely rounded;

cauline 1–3 pairs, sessile, 12–38 × 3–7 mm, blade oblanceolate, not arcuate, base tapered, margins entire, apex obtuse to acute.

basal and cauline, basal sometimes withering by anthesis, not leathery, glabrous or retrorsely hairy proximally;

basal and proximal cauline 25–70(–85) × 5–23 mm, blade ovate to lanceolate, base tapered, margins entire, apex acute;

cauline 3–6 pairs, petiolate or sessile, 20–90(–110) × 2–18 mm, blade oblanceolate to lanceolate, base tapered, margins entire, apex acute.

continuous, cylindric, 0.5–8(–10) cm, axis retrorsely hairy, verticillasters 1–4(–7), cymes 1- or 2(–4)-flowered, 1 or 2 per node;

proximal bracts oblanceolate to lanceolate, 12–34 × 2–8 mm;

peduncles and pedicels retrorsely hairy, sometimes sparsely glandular-pubescent.

interrupted, narrowly conic, 3–10 cm, axis sparsely glandular-pubescent, verticillasters 3–6, cymes 2–10-flowered, 2 per node;

proximal bracts lanceolate to linear, 3–40 × 0.5–4 mm, margins entire;

peduncles and pedicels ascending to erect, sparsely glandular-pubescent.

calyx lobes lanceolate, 4–6 × 1–1.9 mm, retrorsely hairy, sometimes sparsely glandular-pubescent;

corolla light blue to blue or violet, with, rarely without, faint blue or reddish purple nectar guides, funnelform, 14–20 mm, glandular-pubescent externally, sparsely white-lanate internally abaxially, tube 6–7 mm, throat gradually inflated, not constricted at orifice, 4–7 mm diam., slightly 2-ridged abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, navicular, 0.9–1.2 mm, dehiscing completely, sutures papillate;

staminode 7–10 mm, included or reaching orifice, 0.7–0.9 mm diam., tip recurved to coiled, distal 5–8 mm sparsely pubescent to lanate, hairs yellow or yellow-orange, to 1 mm;

style 10–12 mm.

calyx lobes ovate to lanceolate, 3.5–7 × 1–2 mm, glandular-pubescent;

corolla blue to light violet, with reddish purple nectar guides, funnelform, 14–19 mm, glandular-pubescent or glabrescent externally, glabrous or sparsely white- or yellow-villous internally abaxially, tube 5–6 mm, throat gradually inflated, 4–9 mm diam., slightly 2-ridged abaxially;

stamens included, pollen sacs opposite, navicular, 0.9–1.1 mm, dehiscing completely, connective splitting, sides glabrous, sutures papillate;

staminode 15–16 mm, included, 0.3–0.4 mm diam., tip straight to slightly recurved, distal 6–10 mm pilose, hairs golden, to 1.5 mm;

style 13–16 mm.

4–6 × 4–5 mm.

7–10 × 2.5–4 mm, glabrous.