Flora of North America species comparison

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

erect, 3–40(–44) cm, 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.

glabrous or obscurely scabrous, especially along margins, glaucous;

basal and proximal cauline (25–)30–60 × 5–10(–14) mm, blade oblanceolate, base tapered, margins entire, apex obtuse to acute, sometimes mucronate;

cauline 2 or 3 pairs, sessile, 15–50(–57) × 2–8(–12) mm, blade lanceolate to linear, base tapered, margins entire, apex acute.

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, cylindric to ± secund, (2–)3–25(–30) cm, axis glabrous, verticillasters 3–10, cymes 1–5-flowered;

proximal bracts lanceolate, 7–30(–50) × 3–12 mm;

peduncles and pedicels ascending to erect, glabrous.

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 obovate, rarely elliptic, (3.5–)4–6 × 1.8–3 mm, margins entire or erose, glabrous;

corolla violet or reddish violet to purple, with reddish or reddish purple nectar guides, bilaterally symmetric, bilabiate, tubular-funnelform, 14–18(–20) mm, glabrous or glandular-pubescent externally, glabrous or glandular-pubescent internally, tube 6–8 mm, throat gradually inflated, 6–7 mm diam., rounded or slightly 2-ridged abaxially;

stamens included, pollen sacs navicular, sometimes explanate, 0.9–1.2 mm, sutures smooth or papillate;

staminode 8–9 mm, flattened distally, 0.5–0.6 mm diam., tip recurved, distal 1–2 mm papillate, papillae golden yellow, to 0.2 mm, rarely glabrous;

style 10–12 mm.

7–8 × 3.5–4.5 mm.

8–11 × 4–6 mm.