Flora of North America species comparison

prostrate, decumbent, ascending, or erect, 2–14(–20) cm, pubescent to densely retrorsely hairy.

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

basal and cauline, not leathery, retrorsely hairy;

basal and proximal cauline petiolate, (5–)10–40(–55) × 4–14 mm, blade spatulate to oblanceolate, base tapered, margins entire, apex obtuse to acute, rarely rounded;

cauline 1–3 pairs, sessile, 12–38 × 3–7 mm, blade oblanceolate, not arcuate, base tapered, margins entire, apex obtuse to acute.

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.

continuous, cylindric, 0.5–8(–10) cm, axis retrorsely hairy, verticillasters 1–4(–7), cymes 1- or 2(–4)-flowered, 1 or 2 per node;

proximal bracts oblanceolate to lanceolate, 12–34 × 2–8 mm;

peduncles and pedicels retrorsely hairy, sometimes sparsely glandular-pubescent.

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.

calyx lobes lanceolate, 4–6 × 1–1.9 mm, retrorsely hairy, sometimes sparsely glandular-pubescent;

corolla light blue to blue or violet, with, rarely without, faint blue or reddish purple nectar guides, funnelform, 14–20 mm, glandular-pubescent externally, sparsely white-lanate internally abaxially, tube 6–7 mm, throat gradually inflated, not constricted at orifice, 4–7 mm diam., slightly 2-ridged abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, navicular, 0.9–1.2 mm, dehiscing completely, sutures papillate;

staminode 7–10 mm, included or reaching orifice, 0.7–0.9 mm diam., tip recurved to coiled, distal 5–8 mm sparsely pubescent to lanate, hairs yellow or yellow-orange, to 1 mm;

style 10–12 mm.

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.

4–6 × 4–5 mm.

3–5 × 2–3.5 mm, glabrous.

= 32.