Flora of North America species comparison

erect, sometimes ascending, 30–100 cm, glabrous or puberulent proximally, usually slightly glaucous.

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

glabrous or sparsely to densely puberulent, not glaucous;

basal and proximal cauline 30–80(–140) × (6–)12–30(–35) mm, blade oblanceolate, base tapered, margins entire, apex obtuse, acute, or acuminate;

cauline 3–7(–14) pairs, sessile, 28–142 × 1–8(–15) mm, blade lanceolate to linear, base tapered, apex acuminate, sometimes 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.

± secund, sometimes cylindric, 11–69 cm, axis glabrous, verticillasters 6–14(–19), cymes (1 or)2–4-flowered;

proximal bracts linear, 15–70(–126) × 1–10 mm;

peduncles and pedicels spreading to ascending, glabrous.

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 to lanceolate, (3–)4–6(–9) × 1.9–2.8(–3.2) mm, margins entire or erose, glabrous or obscurely glandular-pubescent;

corolla red or orangish red to crimson or scarlet, with reddish violet nectar guides, bilaterally symmetric, strongly bilabiate, tubular-funnelform, 26–32(–36) mm, glabrous or sparsely white-lanate or yellow-lanate internally abaxially, tube 5–8 mm, throat 5–6 mm diam., not constricted at orifice, slightly 2-ridged abaxially, abaxial lobes strongly reflexed, adaxial lobes projecting;

stamens exserted (but usually concealed beneath projecting adaxial lip), pollen sacs opposite, proximal 1/4–1/3 indehiscent, 1.5–2(–2.2) mm, sides glabrous or sparsely to moderately lanate-villous, hairs white, to 1.5 mm, sutures papillate or denticulate, teeth to 0.1 mm;

staminode 15–17 mm, included, tip straight, glabrous;

style 22–27 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.

10–14 × 6–8 mm.

7.5–10 × 5–6 mm.