Flora of North America species comparison

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

ascending to erect, 10–35(–46) cm, glabrous.

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 cauline, glabrous;

basal and proximal cauline 23–65(–100) × (9–)13–40 mm, blade oblanceolate, base tapered, apex rounded to obtuse or acute;

cauline (2–)4–6(–9) pairs, sessile, (8–)20–30 × 8–26 mm, blade ovate to orbiculate, base clasping, apex mucronate.

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, (2–)11–18(–27) cm, axis glabrous, verticillasters 6–9(–15), cymes 2–6-flowered;

proximal bracts orbiculate to ovate, 7–28 × 3–26 mm;

peduncles and pedicels glabrous.

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 ovate, (3–)4.5–6.5 × 1.5–2.3 mm, margins entire or erose, broadly scarious, glabrous;

corolla blue to violet, with reddish violet nectar guides, guides sometimes passing onto limb, tubular-funnelform, (10–)13–17(–20) mm, glabrous externally, sparsely white-villous internally abaxially, tube (5–)7–10 mm, throat gradually inflated, 4.5–5.5(–7) mm diam., rounded abaxially;

stamens included or longer pair reaching orifice, pollen sacs divergent to opposite, 0.7–1.1 mm, sutures papillate;

staminode 7–13 mm, reaching orifice, (0.6–)0.9–1.9 mm diam., tip strongly recurved, distal 2–5 mm moderately to densely pilose, hairs brownish yellow or golden yellow, to 1 mm;

style (7–)9–12 mm.

10–14 × 5–7 mm.

8–10 × 6–7 mm.

2–3 mm.

= 16.