Flora of North America species comparison

prostrate, decumbent, ascending, or erect, 2–28 cm, retrorsely hairy or pubescent.

ascending to erect, 18–70 cm, glandular-pubescent, sometimes densely so distally, not glaucous.

not leathery, glabrous, glabrate, scabrous, or pubescent, hairs pointed;

cauline (1 or)2–4 pairs, petiolate, (2–)4–47 × 0.5–8 mm, blade elliptic to obovate, oblanceolate, or linear, base tapered, apex acute to mucronate.

cauline, opposite or subopposite, not leathery, glandular-pubescent;

cauline (4–)7–10 pairs, sessile or proximals short-petiolate, 14–60 × 8–20(–30) mm, blade obovate to ovate or lanceolate, base tapered to clasping, margins dentate, dentate-serrate, or serrate, apex acute to acuminate.

continuous, ± secund, 1–8(–16) cm, axis retrorsely hairy, hairs pointed and, usually, sparsely glandular-pubescent, verticillasters (1 or)2–8, cymes 1–4-flowered, 1 or 2 per node;

proximal bracts oblanceolate to linear, 10–25 × 0.5–4 mm;

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

interrupted or continuous, cylindric, 13–35 cm, axis densely glandular-pubescent, verticillasters 9–18, cymes 1–5-flowered, 2 per node;

proximal bracts ovate to lanceolate, (7–)15–40 × (2–)8–18 mm, margins dentate to dentate-serrate;

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

calyx lobes lanceolate, 4–7(–7.5) × 0.9–1.8(–2.2) mm, broadly scarious-margined, apex acuminate to caudate, retrorsely puberulent, hairs pointed, and sparsely glandular-pubescent;

corolla blue to violet or lavender, lined internally abaxially with violet or reddish purple nectar guides, funnelform, 14–20 mm, sparsely to densely yellow-lanate or yellow-pilose internally abaxially, tube 6–8 mm, throat gradually inflated, 6–8 mm diam., 2-ridged abaxially;

stamens: longer pair reaching orifice, filaments glabrous, pollen sacs opposite, navicular to subexplanate, 0.9–1.4 mm, sutures papillate;

staminode 11–14 mm, reaching orifice or exserted, flattened distally, 0.3–0.4 mm diam., tip straight to recurved, distal 7–10 mm densely pilose, hairs golden yellow, to 1 mm;

style 13–15 mm.

calyx lobes ovate to lanceolate, 3–6 × 0.8–1.6 mm, densely glandular-pubescent;

corolla white to light lavender or light pink, with reddish violet nectar guides, funnelform, 9–11 mm, glandular-pubescent externally, glandular-pubescent internally, tube 3–4 mm, throat slightly inflated, 3–4 mm diam., rounded abaxially;

stamens included, pollen sacs opposite, navicular to subexplanate, 0.5–0.7 mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth;

staminode 9–10 mm, included or exserted, 0.2–0.3 mm diam., tip straight, glabrous;

style 7–8 mm.

7–8 × 3.5–4.5 mm.

4–5 × 2.5–3 mm, glabrous.