Flora of North America species comparison

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

ascending to erect, (6–)15–42 cm, ± retrorsely hairy or pubescent, 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, ± leathery or not, densely retrorsely hairy, not glaucous;

basal and proximal cauline 20–70 × 3–16(–22) mm, blade oblanceolate, base tapered, margins entire, apex obtuse to acute;

cauline 2–5 pairs, short-petiolate or sessile, 19–72 × 3–9 mm, blade oblanceolate to lanceolate, base tapered to truncate, 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.

continuous, secund, (4–)10–22 cm, axis retrorsely hairy to retrorsely pubescent or pubescent, verticillasters (3–)5–8, cymes 1–5-flowered, 2 per node;

proximal bracts oblanceolate to lanceolate, 25–70 × 3–9 mm;

peduncles and pedicels retrorsely hairy and glandular-pubescent.

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, 6–8.5 × 2.8–3.8 mm, glandular-pubescent;

corolla blue to lavender, with or without faint lavender nectar guides, ventricose, 24–30 mm, glandular-pubescent externally, glabrous internally, tube 8–12 mm, throat gradually inflated, slightly constricted at orifice, 6–9(–12) mm diam., slightly 2-ridged abaxially;

stamens: longer pair reaching orifice or slightly exserted, pollen sacs divergent, sigmoid, 2–2.5 mm, dehiscing incompletely, proximal 1/5–1/4 indehiscent, connective not splitting, sides glabrous, sutures denticulate, teeth to 0.1 mm;

staminode 16–18 mm, included, 0.5–0.8 mm diam., tip straight, glabrous;

style 20–24 mm.

4–6 × 2.5–4 mm, glabrous.

12–15 × 8–10 mm.