Flora of North America species comparison

decumbent to erect, 3–10(–15) cm, glabrous.

retrorsely ascending to erect, (15–)25–65(–100) cm, puberulent proximally, glandular-pubescent distally.

basal and cauline, glabrous;

basal and proximal cauline (10–)20–35 × 5–17 mm, blade obovate, base tapered, apex rounded to obtuse;

cauline 1–3 pairs, sessile, 10–29 × 5–12 mm, blade ovate to elliptic, base tapered, apex rounded to mucronate.

basal and cauline, sometimes basal absent or withering, ± leathery or not, glabrous or puberulent to pubescent;

basal and proximal cauline petiolate, 35–120(–150) × 8–55(–76) mm, blade spatulate to oblanceolate or elliptic, base tapered, margins subentire or serrate to dentate, apex rounded to acute;

cauline 4–8 pairs, sessile, 35–120(–150) × 10–45(–54) mm, blade ovate to lanceolate, base tapered to cordate-clasping, margins subentire to serrate or dentate, apex acute, rarely obtuse.

continuous, cylindric, 1–6 cm, axis glabrous, verticillasters 1–5(or 6), cymes 3–5-flowered;

proximal bracts ovate, 6–14 × 3–13 mm;

peduncles and pedicels glabrous.

interrupted or continuous, cylindric, 10–30(–52) cm, axis densely glandular-pubescent, verticillasters 3–6(–8), cymes 2–6-flowered, 2 per node;

proximal bracts ovate, 20–78 × 8–74 mm;

peduncles and pedicels densely glandular-pubescent.

calyx lobes ovate to lanceolate, (3–)4–5.5 × 1.7–2.2 mm, margins entire or erose, narrowly to broadly scarious, glabrous;

corolla blue to violet or lavender, with reddish purple nectar guides, tubular-funnelform, 13–17(–19) mm, glabrous externally, sparsely white-villous internally abaxially, tube 4–5 mm, throat gradually inflated, 4–5 mm diam., rounded abaxially;

stamens included, pollen sacs divergent to opposite, 0.8–1.2 mm, sutures smooth or obscurely papillate;

staminode 6–8 mm, included, 0.8–1 mm diam., tip recurved, distal 4–5 mm moderately to densely pubescent, hairs golden yellow, to 1 mm;

style 7–8 mm.

calyx lobes ovate to lanceolate, (8–)10–16 × 2.5–4.5 mm, densely glandular-pubescent;

corolla white to pink or violet to purple, with reddish purple nectar guides, ventricose-ampliate, 35–55 mm, glandular-pubescent internally, tube 10–14 mm, throat abruptly inflated, slightly constricted at orifice, (15–)18–25 mm diam., rounded abaxially;

stamens included, pollen sacs opposite, explanate, 1.3–1.6 mm, dehiscing completely, sutures smooth;

staminode 23–30 mm, included or barely exserted, 0.6–0.9 mm diam., tip recurved, distal 20–25 mm sparsely to moderately villous, hairs white or golden yellow, to 3.5 mm;

style 18–34 mm.

5–7 × 5–6 mm.

13–18 × 8–10 mm.