Flora of North America species comparison

ascending to erect, (10–)15–57 cm, glabrous.

erect, (50–)80–120 cm, glaucous or not.

basal and cauline, glabrous;

basal and proximal cauline 18–180 × 5–45(–53) mm, blade spatulate to lanceolate, base tapered, apex rounded to obtuse, acute, or mucronate;

cauline 2–5 pairs, short-petiolate or sessile, 15–80 × 7–32 mm, blade obovate, ovate, oblanceolate, or lanceolate, base tapered, clasping, or cordate-clasping, apex acute to rounded or mucronate.

basal and proximal cauline 40–100 × 8–50 mm, blade oblanceolate to elliptic, base tapered, margins coarsely dentate, apex obtuse to acute;

cauline 5–8 pairs, sessile, 32–120 × 10–45 mm, blade ovate to lanceolate, base sessile, proximals usually auriculate-clasping, distal ones usually cordate-clasping, margins dentate to serrate, apex acute to acuminate.

continuous or interrupted, cylindric, (5–)9–27 cm, axis glabrous, verticillasters (2–)4–10, cymes (1–)3–6-flowered;

proximal bracts ovate to lanceolate or oblong, 9–46 × 7–15 mm;

peduncles and pedicels glabrous, peduncles to 26 mm.

interrupted, cylindric, 20–80 cm, axis glabrous or glandular-pubescent distally, verticillasters 9–16, cymes (1–)3–8(–13)-flowered;

proximal bracts ovate to lanceolate, 15–35 × 4–25 mm;

peduncles and pedicels spreading to ascending, glabrous or glandular-pubescent.

calyx lobes ovate to lanceolate, (2.5–)4–7 × 1.8–2.8 mm, margins entire or erose, broadly scarious, apex acute to acuminate or caudate, glabrous;

corolla blue to violet, sometimes lavender, with or without reddish violet nectar guides, tubular-funnelform to ventricose, 12–20 mm, glabrous externally, glabrous internally or sparsely white-villous abaxially, tube 4–6 mm, throat gradually inflated, 5–6 mm diam., rounded abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, (0.7–)1–1.5 mm, sutures smooth or papillate;

staminode 8–12 mm, reaching orifice or slightly exserted, (0.2–)0.5–2 mm diam., tip recurved, prominently bifurcate, distal 4–8 mm densely villous, hairs yellow to golden yellow, to 2.5 mm;

style 11–15 mm.

calyx lobes round to ovate or lanceolate, 3.5–5.5 × 2.5–3.2 mm, glabrous or glandular-pubescent;

corolla lavender, blue, pink, or purple, with reddish purple nectar guides, strongly bilabiate, ventricose-ampliate, 24–34 mm, glandular-pubescent externally, glabrous or sparsely white-lanate internally abaxially, glandular-pubescent adaxially, tube 7–9 mm, length 1.6–2 times calyx lobes, throat abruptly inflated, not constricted at orifice, 8–14 mm diam., rounded abaxially;

stamens included or longer pair reaching orifice, filaments of shorter pair glandular-puberulent proximally, pollen sacs navicular, 1.8–2.4 mm, sutures papillate or denticulate, papillae or teeth to 0.1 mm;

staminode 15–16 mm, included, 0.5–0.9 mm diam., tip straight, glabrous distally or distal 1–2 mm sparsely pilose, hairs yellow, to 0.5 mm [5–6 mm moderately pilose, hairs yellow, to 1.5 mm], proximal 1–2 mm glandular-pubescent;

style 15–19 mm, glabrous.

10–14 × 5–7 mm.

9–14 × 6–8 mm, glabrous.

2–3 mm.

= 16.