Flora of North America species comparison

ascending to erect, 13–50(–70) cm, glabrous, glaucous.

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

basal and cauline, basal sometimes few, opposite, glabrous, glaucous;

basal and proximal cauline 15–60 × 2–10(–20) mm, blade obovate to oblanceolate or linear, base tapered, margins entire, apex obtuse to acute;

cauline 3–20 pairs, sessile or proximals short-petiolate, 10–90 × 2–20 mm, blade elliptic to ovate, lanceolate, or linear, base tapered to clasping or cordate-clasping, margins entire, apex obtuse to 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 or continuous, secund, (3–)6–31 cm, axis glabrous, verticillasters 3–10, cymes 1–3(or 4)-flowered, 2 per node;

proximal bracts ovate to lanceolate, 4–50 × 1–32 mm;

peduncles and pedicels ascending to erect, glabrous.

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 to oblong or obovate, 2.5–6.5 × 1.4–3.2 mm, glabrous;

corolla violet to blue or purple, with or without purple nectar guides, funnelform to ventricose, 18–35 mm, glabrous externally, glabrous internally, tube 7–9 mm, throat gradually inflated, 8–10 mm diam., slightly 2-ridged abaxially;

stamens: longer pair reaching orifice or exserted, filaments glabrous, pollen sacs parallel, 1.8–3.5 mm, distal 1/3–1/2 indehiscent, sides hispidulous to pilose, hairs white, to 0.8 mm near filament attachment, sutures denticulate, teeth to 0.3 mm;

staminode 12–19 mm, included, 0.4–0.6 mm diam., glabrous;

style 16–22 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.

7–11 × 14–6 mm.

5–7 × 3–4 mm, glabrous.