Flora of North America species comparison

ascending to erect, (30–)60–100 cm, slightly glaucous or not.

ascending to erect, 8–20 cm, glutinous, usually covered with sand, not glaucous.

basal and proximal cauline 20–165 × 12–50 mm, blade ovate to lanceolate, base tapered, margins finely to coarsely dentate, apex obtuse to acute;

cauline 4–7 pairs, sessile or proximals short-petiolate, 45–90 × 22–76 mm, blade ovate to triangular, base tapered or sessile on proximals, auriculate-clasping to connate-perfoliate on distal ones, margins finely to coarsely dentate, apex 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.

interrupted or continuous, secund, (6–)12–48 cm, axis glabrous, verticillasters 4–13, cymes 1–3(–6)-flowered;

proximal bracts ovate (connate-perfoliate) or lanceolate (auriculate-clasping), (9–)16–55 × 10–60 mm;

peduncles and pedicels ascending to erect, glabrous or glandular-pubescent.

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 ovate, 3–5.5 × 2–3.2 mm, glabrous or glandular-pubescent;

corolla rose pink, with reddish purple nectar guides, strongly bilabiate, ventricose, (18–)25–34 mm, glandular-pubescent externally, glandular-pubescent internally, tube 6–9 mm, length 1.6–2 times calyx lobes, throat gradually inflated, ± constricted at orifice, 7–10 mm diam., rounded abaxially;

stamens: longer pair reaching orifice, filaments of shorter pair glandular-puberulent proximally, pollen sacs explanate, 1.5–2 mm, sutures smooth;

staminode 11–17 mm, included, 0.2–0.4 mm diam., tip straight to recurved, glabrous or distal 1–2 mm sparsely to moderately lanate, hairs yellow, to 1 mm;

style 20–25 mm, glabrous.

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.

7–12 × 4–6 mm, glabrous.

7.5–10 × 5–6 mm.