Flora of North America species comparison

ascending to erect, 6–26 cm, retrorsely hairy or glabrate, not glaucous.

ascending to erect, 18–50 cm, glabrous, not glaucous.

basal and cauline, ± leathery or not, glabrous or puberulent proximally on petiole and along midvein abaxially;

basal and proximal cauline 10–60 × 3–18 mm, blade spatulate to elliptic, base tapered, margins entire, sometimes ± serrulate distally, apex rounded to obtuse or acute;

cauline 1–3 pairs, sessile, 14–35 × 2–8 mm, blade lanceolate, sometimes oblanceolate, base truncate, margins entire, rarely ± serrulate distally, apex obtuse to acute.

basal and cauline, or basal sometimes reduced, not leathery, glabrous, not glaucous;

basal and proximal cauline 35–80(–120) × 4–13 mm, blade oblanceolate, base tapered, margins entire, apex rounded to obtuse, or acute;

cauline 3–5 pairs, sessile or proximals sometimes short-petiolate, 20–110 × 5–18 mm, blade oblanceolate to lanceolate, rarely linear, base tapered to clasping, apex obtuse to acute.

interrupted, cylindric, 1–13 cm, axis moderately glandular-pubescent, verticillasters 1–5, cymes 2–5-flowered, 2 per node;

proximal bracts lanceolate, 8–30 × 2–7 mm, margins entire;

peduncles and pedicels ascending to erect, glandular-pubescent.

interrupted or continuous, secund, 4–17 cm, axis glabrous or ± glandular distally, verticillasters 4–11, cymes 2- or 3(–5)-flowered, 2 per node;

proximal bracts lanceolate, 10–50 × 4–16 mm;

peduncles and pedicels glandular to glandular-pubescent, peduncles to 7 mm, pedicels 2–11 mm.

calyx lobes ovate to lanceolate, 2.6–4.8 × 1–1.8 mm, glandular-pubescent;

corolla light blue to light purple, with violet nectar guides, funnelform, 10–14 mm, glandular-pubescent externally, moderately white- or yellowish lanate internally abaxially, tube 4–5 mm, throat slightly inflated, 3.5–4.5 mm diam., 2-ridged abaxially;

stamens included, pollen sacs opposite, navicular to subexplanate, 0.6–0.8 mm, dehiscing completely, connective splitting, sides glabrous, sutures papillate;

staminode 6–7 mm, included, 0.3–0.4 mm diam., tip recurved, distal 0.5–1.5 mm densely pilose, hairs yellow, to 0.7 mm;

style 8–10 mm.

calyx lobes ovate to lanceolate, 5–7.5 × 2–4 mm, margins erose, glandular to glandular-pubescent;

corolla blue to violet, without nectar guides, ventricose, 27–33 mm, glabrous externally, glabrous internally, tube 9–11 mm, throat gradually to abruptly inflated, not constricted at orifice, 8–12 mm diam., 2-ridged abaxially;

stamens: longer pair reaching orifice, pollen sacs divergent, navicular, 2–2.8 mm, dehiscing incompletely, proximal 1/5 indehiscent, connective not splitting, sides villous, hairs white, to 1 mm, sutures denticulate, teeth to 0.1 mm;

staminode 16–18 mm, included, 0.6–0.8 mm diam., tip straight, distal 1–6 mm sparsely lanate, hairs yellowish, to 0.8 mm;

style 17–21 mm.

4–6 × 2.5–4 mm, glabrous.

7–9 × 4.5–5.5 mm.