Flora of North America species comparison

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

ascending to erect, 18–50 cm, glabrous, 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, 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, 1–6 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 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 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 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.

4–7 × 2.5–4 mm, glabrous.

7–9 × 4.5–5.5 mm.