Flora of North America species comparison

ascending to erect, 4–40(–70) cm, glabrous or retrorsely hairy, not glaucous.

ascending to erect, 9–35 cm, glabrous, often glutinous and covered with sand, not glaucous.

basal and cauline, not leathery, glabrous;

basal and proximal cauline 45–125 × 5–26 mm, blade elliptic to oblanceolate, base tapered, margins entire, apex obtuse to acute;

cauline 4–7 pairs, sessile or proximals short-petiolate, (7–)12–86 × (2–)3–20(–25) mm, blade oblanceolate to lanceolate or elliptic, rarely ovate, base tapered to truncate, margins entire, apex obtuse to acute.

basal and cauline, ± leathery or not, glabrous, often glutinous and covered with sand, not glaucous;

basal and proximal cauline 18–105 × 1–10 mm, blade oblanceolate to linear, base tapered, margins entire, apex obtuse to acute;

cauline (2 or)3 or 4 pairs, petiolate or sessile, 28–110 × 1–6 mm, blade linear, base tapered to truncate, apex acute.

interrupted, cylindric, 2–25(–50) cm, axis glabrous or retrorsely hairy, verticillasters (1 or)2–10, cymes 2–9-flowered, 2 per node;

proximal bracts lanceolate, rarely ovate, 4–50 × 2–12 mm, margins entire;

peduncles and pedicels erect, retrorsely hairy.

continuous, secund, 3–26 cm, axis glabrous, sometimes glutinous and covered with sand, verticillasters 3–6(–9), cymes 1–3-flowered, 2 per node;

proximal bracts linear, 22–115 × 1.5–4 mm;

peduncles and pedicels glabrous, sometimes glutinous and covered with sand.

calyx lobes oblong to lanceolate, 3–4.8 × 0.7–1.8 mm, apex truncate to cuspidate or short- to long-caudate, glabrous;

corolla yellow, rarely white, ochroleucous, pink, or lavender, without nectar guides, tubular to tubular-funnelform, 6–11 mm, glabrous externally, moderately yellowish or white-lanate internally abaxially, tube 3–4 mm, throat slightly inflated, 2–3 mm diam., 2-ridged abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, explanate, 0.4–0.5 mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth;

staminode 4–6 mm, included, 0.3–0.4 mm diam., tip straight, distal 0.5–1 mm pilose, hairs yellowish brown, to 0.5 mm;

style 7–9 mm.

calyx lobes lanceolate, (6–)7–12 × 2.8–4 mm, glabrous, glutinous and sometimes covered with sand;

corolla blue to violet or purple, with violet nectar guides, ventricose, 20–28 mm, glabrous externally, glabrous internally, tube 8–9 mm, throat abruptly inflated, slightly constricted at orifice, (7–)10–12 mm diam., slightly 2-ridged abaxially;

stamens: longer pair reaching orifice, pollen sacs divergent, navicular-sigmoid, 2–2.5 mm, dehiscing incompletely, proximal 1/5 indehiscent, connective not splitting, sides moderately villous or lanate, hairs white, to 1 mm, sutures denticulate, teeth to 0.1 mm;

staminode: 11–18 mm, reaching orifice or slightly exserted, 0.6–0.8 mm diam., tip straight, distal 1–2 mm sparsely to moderately pilose, hairs yellow, to 1 mm;

style 17–20 mm.

3–5 × 2–3.5 mm, glabrous.

(5–)7–11 × (4–)5–8 mm.

= 32.