Flora of North America species comparison

ascending to erect, (16–)20–60 cm, glabrous or ± puberulent proximally, ± glaucous.

ascending to erect, 26–45 cm, glabrous, glaucous.

basal and cauline, ± leathery or not, glabrous or proximals puberulent proximally or along midveins, ± glaucous;

basal and proximal cauline (30–)50–95 × 10–15(–28) mm, blade spatulate to oblanceolate, base tapered, margins entire, usually undulate, apex rounded to obtuse;

cauline 2–4 pairs, sessile, 20–73 × 4–15 mm, blade lanceolate to elliptic, base truncate to clasping, margins crisped or undulate, apex acute.

basal and cauline, ± leathery or not, glabrous, glaucous;

basal and proximal cauline 15–60 × 7–13 mm, blade spatulate to elliptic, base tapered, margins entire, apex rounded to obtuse or acute;

cauline 2–4 pairs, sessile or proximals short-petiolate, 26–55 × 7–14 mm, blade oblanceolate to oblong or lanceolate, base truncate to clasping, margins entire, apex obtuse to acute.

interrupted, secund to subsecund, (4–)8–31 cm, axis glabrous, verticillasters 5–9(–12), cymes (1 or)2–5-flowered, 2 per node;

proximal bracts ovate to lanceolate, 15–50 × 3–23 mm;

peduncles and pedicels glabrous, peduncles to 18 mm, pedicels 1–7 mm.

interrupted, cylindric, 8–22 cm, axis glandular-pubescent, verticillasters 2–8, cymes 3–6-flowered, 2 per node;

proximal bracts lanceolate, 16–40 × 2–14 mm, margins entire;

peduncles and pedicels ascending to erect, pedicels glandular-pubescent, sometimes peduncles glabrous.

calyx lobes ovate, 3.5–4.5 × 1.4–2 mm, apex acute to acuminate, glabrous;

corolla blue to violet, with violet nectar guides, funnelform to weakly ventricose, 14–18(–20) mm, glabrous or ± glandular externally, glabrous internally, tube 5–8 mm, throat gradually inflated, not constricted at orifice, 5–7 mm diam., rounded abaxially;

stamens: longer pair reaching orifice, pollen sacs divergent, navicular-sigmoid, 1.2–1.7 mm, dehiscing incompletely, proximal 1/4 indehiscent, connective not splitting, sides sparsely to moderately pilose, hairs white, to 0.5(–0.7) mm, sutures denticulate, teeth to 0.1 mm;

staminode: 9–11 mm, reaching orifice, 0.2–0.4 mm diam., tip straight, distal 2–6 mm sparsely pilose, hairs golden yellow, to 0.6 mm;

style 9–12 mm.

calyx lobes ovate to lanceolate, 2.4–5.5 × 1–2 mm, glandular-pubescent;

corolla violet, without nectar guides, tubular-funnelform, 12–15 mm, glandular-pubescent externally, moderately yellow-pilose internally abaxially, tube 3–4 mm, throat slightly inflated, 3.5–5 mm diam., 2-ridged abaxially;

stamens included, pollen sacs opposite, navicular, 0.7–1 mm, dehiscing completely, connective splitting, sides glabrous, sutures papillate;

staminode 6–8 mm, included, 0.3–0.5 mm diam., tip straight to slightly recurved, distal 1–2 mm densely pilose, hairs golden yellow, to 0.5 mm, or glabrous;

style 8–10 mm.

6–10 × 4–5 mm.

5–7 × 3–4 mm, glabrous.