Flora of North America species comparison

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

ascending to erect, 8–20 cm, 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.

basal and cauline, ± leathery, glutinous, usually covered with sand, not glaucous;

basal and proximal cauline 35–70 × 2–5(–8) mm, blade oblanceolate, base tapered, margins entire, apex obtuse to acute;

cauline 2–8 pairs, sessile, 34–55 × 2–6 mm, blade elliptic to linear, base tapered to truncate, apex obtuse to 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, secund, 3–9 cm, axis glutinous, sometimes covered with sand, verticillasters 3–5, cymes 1–5-flowered, 2 per node;

proximal bracts lanceolate, 15–23 × 1–3 mm;

peduncles and pedicels glutinous, sometimes covered with sand.

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 lanceolate, 3–6 × 1.5–1.8 mm, glutinous and covered with sand;

corolla violet to blue, with faint reddish purple nectar guides, ventricose-ampliate, 15–21 mm, glabrous externally, glabrous internally, tube 4–5 mm, throat gradually inflated, not constricted at orifice, 6–7 mm diam., rounded abaxially;

stamens included or longer pair reaching orifice, pollen sacs divergent, navicular, 1.5–2 mm, dehiscing incompletely, connective not splitting, sides sparsely to moderately lanate, hairs white, to 0.6 mm, sutures denticulate, teeth to 0.1 mm;

staminode 8–10 mm, included, 0.4–0.5 mm diam., tip straight to recurved, distal 1–3 mm sparsely lanate, hairs yellowish, to 0.6 mm;

style 12–14 mm.

7–11 × 3.5–4.5 mm.

7.5–10 × 5–6 mm.

= 32.