Flora of North America species comparison

ascending to erect, 40–90 cm, glabrous, glaucous.

prostrate or ascending, 2–10 cm, cinereous, retrorsely hairy, hairs pointed.

cauline, opposite, glabrous, glaucous;

cauline 6–14 pairs, sessile, 30–85(–102) × 3–13 mm, blade elliptic, base tapered, margins entire, apex acute.

not leathery, cinereous, densely retrorsely hairy, hairs pointed;

cauline 5–9 pairs, sessile, 4–14 × 0.5–1.4 mm, blade linear, base tapered, apex mucronate, sometimes acuminate.

interrupted, cylindric, 6–30 cm, axis glabrous, verticillasters (5–)8–14, cymes 1(or 2)-flowered, 2 per node;

proximal bracts narrowly elliptic to linear, 8–45 × 1–8 mm;

peduncles and pedicels ascending to erect, glabrous.

continuous, cylindric, 3–15 cm, axis retrorsely hairy to retrorsely cinereous, hairs pointed, verticillasters 1–8, cymes 1 or 2(or 3)-flowered, 1 per node;

proximal bracts linear, 6–15 × 0.6–1.5 mm;

peduncles and pedicels ascending to erect, retrorsely cinereous, hairs pointed, and, sometimes, sparsely glandular-pubescent.

calyx lobes obovate to ovate or elliptic, 1.8–3.2 × 1.5–2.2 mm, glabrous or minutely ciliolate distally;

corolla light lavender to violet or purple, with violet nectar guides, weakly ventricose, 22–26(–28) mm, glabrous externally, glabrous internally, tube 7–9 mm, throat gradually inflated, 7–9 mm diam., 2-ridged abaxially;

stamens included or longer pair exserted, filaments glabrous, pollen sacs parallel to slightly divergent, 1.5–2 mm, distal 2/3 indehiscent, sides glabrous, sutures denticulate, teeth to 0.1 mm;

staminode 15–16 mm, included, 0.5–0.6 mm diam., glabrous;

style 16–20 mm.

calyx lobes lanceolate, (3–)4–6 × 0.7–1 mm, narrowly scarious-margined, retrorsely hairy, hairs pointed, and sparsely glandular-pubescent;

corolla blue or violet, lined internally abaxially with reddish violet nectar guides, funnelform, 15–19 mm, sparsely white- or yellowish lanate internally abaxially, tube 6–7 mm, throat gradually inflated, 4–5.5 mm diam., 2-ridged abaxially;

stamens: longer pair reaching orifice, filaments glabrous, pollen sacs opposite, navicular to subexplanate, 0.7–1 mm, sutures papillate;

staminode 8–9 mm, included or reaching orifice, flattened distally, 0.2–0.3 mm diam., tip straight to recurved, distal 6–7 mm pilose, hairs yellowish orange, to 0.7 mm;

style 13–16 mm.

7–10 × 4.5–5.5 mm.

3.3–4.5 × 2.8–3.6 mm.

= 16.