Flora of North America species comparison

rhizomelike.

ascending to erect, (15–)35–60 cm, retrorsely hairy, hairs pointed, at least proximally, not glaucous.

ascending to erect, 10–27 cm, glabrous, glutinous, usually covered with sand, not glaucous.

cauline, opposite, glabrous, glaucous;

cauline 4–8 pairs, short-petiolate or sessile, (15–)20–60 × (2–)6–13(–20) mm, blade elliptic or proximals oblanceolate to lanceolate, base tapered, margins entire, apex obtuse to acute.

cauline, leathery, glabrous, sometimes glutinous;

cauline 3–5 pairs, short-petiolate or sessile, (12–)20–50(–55) × (3–)10–24 mm, blade obovate or spatulate proximally, obovate to lanceolate distally, base tapered, margins dentate, apex rounded to obtuse or acute.

continuous, cylindric, 5–22 cm, axis glabrous or retrorsely hairy, verticillasters 4–8(–11), cymes 1- or 2(–4)-flowered, 2 per node;

proximal bracts lanceolate to elliptic, 8–66 × 1–13 mm;

peduncles and pedicels ascending to erect, peduncles glabrous or sparsely retrorsely hairy, pedicels papillate or glandular distally.

continuous, cylindric, (1–)2–9 cm, axis glabrous or sparsely puberulent, glutinous, verticillasters 2–8, cymes 2–6-flowered, 2 per node;

proximal bracts lanceolate, 16–58 × 3–12 mm, margins dentate;

peduncles and pedicels erect, glabrous or puberulent, glutinous.

calyx lobes lanceolate, 4–6(–7) × 1.4–2.6 mm, glabrous;

corolla lavender to light violet or violet, with or without faint lavender nectar guides, ventricose-ampliate, (20–)22–25(–30) mm, glabrous externally, glabrous internally, tube 6–8 mm, throat gradually inflated, 7–9 mm diam., 2-ridged abaxially;

stamens: longer pair exserted, filaments glabrous, pollen sacs parallel, 1.5–1.9(–2.1) mm, distal 1/2–2/3 indehiscent, sides glabrous or hispidulous to lanate, hairs white, to 0.5 mm, sutures denticulate, teeth to 0.2 mm;

staminode 12–14 mm, reaching orifice or exserted, 0.6–0.8 mm diam., glabrous;

style 18–20 mm.

calyx lobes ovate to lanceolate, 4.5–8.4 × 1.6–3 mm, glutinous;

corolla white to lavender, with reddish purple nectar guides, tubular-funnelform, 11–15(–18) mm, glabrous externally, sparsely white-pilose internally abaxially, tube 6–7 mm, throat gradually inflated, 3–5 mm diam., rounded abaxially;

stamens included, pollen sacs opposite, navicular to subexplanate, 0.8–0.9 mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth;

staminode 7–10 mm, included, 0.6–0.8 mm diam., tip slightly recurved, distal 0.5–2.5 mm sparsely pilose, hairs white, to 0.5 mm;

style 7–8 mm.

7–11 × 3.5–4.5 mm.

5–8 × 4–5 mm, glabrous.

= 32.

= 16.