Flora of North America species comparison

rhizomelike.

ascending to erect, 14–40(–60) cm, glabrous.

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

basal and cauline, glabrous;

basal and proximal cauline 40–65(–110) × 8–20(–30) mm, blade obovate, base tapered, apex obtuse to acute, sometimes mucronate;

cauline 2–4 pairs, sessile, (9–)12–60 × 7–26 mm, blade lanceolate to ovate or elliptic, base tapered to clasping or cordate-clasping, apex obtuse to acute, sometimes mucronate.

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.

interrupted or ± continuous, secund, sometimes cylindric, 5–23 cm, axis glabrous, verticillasters 4–8, cymes 1–3(or 4)-flowered;

proximal bracts ovate to lanceolate, (3–)7–38 × (1–)2–18 mm;

peduncles and pedicels glabrous, peduncles to 28 mm.

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 ovate to lanceolate, 5–6.7(–7.2) × 2–3(–3.7) mm, margins entire or erose, broadly scarious, glabrous;

corolla lavender to violet, blue, pinkish blue, or white, with or without reddish violet nectar guides, tubular-funnelform, 17–20(–22) mm, glabrous externally, sparsely white-villous internally abaxially or glabrous, tube 5–8 mm, throat gradually inflated, 5–6 mm diam., rounded abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, 1.1–1.6 mm, sutures papillate;

staminode 8–9 mm, reaching orifice or slightly exserted, 0.6–1 mm diam., tip strongly recurved, distal 3–4 mm sparsely to densely villous, hairs mostly along margins, yellowish, to 1 mm;

style 10–12 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.

9–12 × 5–7 mm.

5–8 × 4–5 mm, glabrous.

3.5–5 mm.

= 16.