Flora of North America species comparison

ascending to erect, (6–)15–45(–65) cm, glabrous or scabrous.

decumbent to ascending, 5–26 cm, usually ± fistulose, glutinous and covered with sand, not glaucous.

basal and cauline, basal not reduced, glabrous, sometimes scabrous;

basal and proximal cauline (25–)40–90 × 2–18 mm, blade spatulate to oblanceolate or linear, base tapered, apex rounded to obtuse or acute;

cauline 2–8 pairs, sessile, 18–113 × 2–24(–40) mm, blade ovate to lanceolate or linear, base tapered to cordate-clasping, apex acute to acuminate.

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

basal and proximal cauline 18–80 × 4–15 mm, blade oblanceolate, base tapered, margins entire, crisped, apex obtuse to acute;

cauline 2–5 pairs, sessile, 15–75 × 2–8 mm, blade oblanceolate to lanceolate, base tapered to truncate, margins crisped, apex rounded or obtuse to acute.

continuous or interrupted, cylindric, (2–)5–30(–37) cm, axis glabrous, rarely scabrous, verticillasters (3–)5–15(–26), cymes (2–)4–8(–10)-flowered;

proximal bracts ovate to lanceolate or linear, (3–)12–98 × (1–)2–28 mm;

peduncles and pedicels glabrous or scabrous, peduncles to 3 mm.

continuous, cylindric, 4–15 cm, axis glutinous and covered with sand, verticillasters 4–10, cymes 1–6-flowered, 2 per node;

proximal bracts lanceolate, 14–45 × 2–5(–8) mm;

peduncles and pedicels glutinous and covered with sand.

calyx lobes ovate to lanceolate, 4–8 × 1–2.5 mm, margins entire or erose, broadly scarious, glabrous or scabrous;

corolla lavender, blue, or pink, with violet or reddish purple nectar guides, tubular-funnelform, 13–20(–22) mm, glabrous externally, sparsely white-pubescent internally abaxially or glabrous, tube 6–8 mm, throat gradually inflated, 4–6 mm diam., rounded abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, (0.9–)1.1–1.5 mm, sutures papillate;

staminode 8–10 mm, reaching orifice, 0.9–1.2 mm diam., tip recurved, distal 4–6 mm sparsely villous, hairs golden yellow, to 1 mm, hairs on proximal part of staminode mostly along margins;

style 8–12 mm.

calyx lobes lanceolate, 5–6.5 × 1–2 mm, glutinous and covered with sand;

corolla lavender to blue-lavender, with violet nectar guides, weakly ventricose, 14–17 mm, glabrous externally, usually glutinous and covered with sand distally, especially on lobes, glabrous internally, tube 5–6 mm, throat gradually inflated, not constricted at orifice, 5–6 mm diam., slightly 2-ridged abaxially;

stamens: longer pair reaching orifice, pollen sacs opposite, navicular, 0.9–1.4 mm, dehiscing completely or incompletely, connective splitting or not, sides glabrous, sutures papillate;

staminode: 8–9 mm, included, 0.3–0.5 mm diam., tip straight, distal 4–5 mm sparsely papillate, papillae violet, to 0.2 mm;

style 10–12 mm.

9–15 × 5–7 mm.

3.5–6.5 mm.