Flora of North America species comparison

erect, 3–25 cm, glabrous or ± retrorsely hairy, not glaucous.

ascending to erect, (10–)17–70 cm, ± retrorsely hairy proximally, also sparsely glandular-pubescent distally, not glaucous.

basal and cauline, not leathery, glabrous;

basal and proximal cauline (10–)17–60 × 5–18 mm, blade spatulate to oblanceolate, lanceolate, or elliptic, base tapered, margins entire, apex rounded to obtuse or acute;

cauline 2–6 pairs, short-petiolate or sessile, 10–55 × 3–15 mm, blade ovate to lanceolate, base tapered to clasping, margins entire, apex obtuse to acute.

basal and cauline, basal sometimes withering by anthesis, not leathery, glabrous (except for puberulent petioles and midveins);

basal and proximal cauline (12–)25–87(–120) × (3–)5–18(–28) mm, blade lanceolate, base tapered, margins entire, apex obtuse to acute;

cauline 4–6 pairs, short-petiolate or sessile, 17–98 × 2–16 mm, blade lanceolate to linear, base tapered to clasping, margins entire, apex acute.

interrupted, cylindric, 1–6 cm, axis sparsely glandular-pubescent, sometimes also retrorsely hairy, verticillasters 1–3(or 4), cymes 2–6-flowered, 2 per node;

proximal bracts lanceolate, 2–15 × 1–7 mm, margins entire;

peduncles and pedicels erect, sparsely to moderately glandular-pubescent.

interrupted, narrowly conic, (3–)11–30 cm, axis sparsely glandular-pubescent, verticillasters 3–8, cymes 2–4-flowered, 2 per node;

proximal bracts lanceolate to linear, 10–45 × 1–5 mm, margins entire;

peduncles and pedicels ascending, sparsely glandular-pubescent.

calyx lobes lanceolate, 3–4 × 0.8–1.2 mm, glandular-pubescent;

corolla dark blue, sometimes whitish, without nectar guides, funnelform, 9–12 mm, glandular-pubescent externally, moderately whitish lanate internally abaxially, tube 3–4 mm, throat slightly inflated, 2–3 mm diam., 2-ridged abaxially;

stamens included, pollen sacs opposite, explanate to subexplanate, 0.5–0.6 mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth;

staminode 5–6 mm, included, 0.2–0.3 mm diam., tip straight to slightly recurved, distal 0.5–1 mm moderately pilose, hairs golden yellow, to 0.5 mm;

style 4–6 mm.

calyx lobes lanceolate, 3–6 × 1.4–2 mm, glandular-pubescent;

corolla lavender to light blue, with reddish purple nectar guides, funnelform, 17–27 mm, glandular-pubescent externally, sparsely white- or yellowish lanate internally abaxially, tube 5–7 mm, throat gradually inflated, 6–7 mm diam., slightly 2-ridged abaxially;

stamens included, pollen sacs opposite, navicular, 1.3–1.6 mm, dehiscing completely, connective splitting, sides glabrous, sutures papillate;

staminode 12–14 mm, included, 0.3–0.4 mm diam., tip recurved, distal 7–8 mm moderately to densely pilose, hairs yellow-orange, to 1 mm;

style 11–14 mm.

4–7 × 2.5–4 mm, glabrous.

8–10 × 3.2–4 mm, glabrous.

= 16.