Flora of North America species comparison

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

erect, 8–12 cm, glabrous, glaucescent.

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, leathery, glabrous;

basal and proximal cauline 11–40 × 3–14 mm, blade spatulate to oval or orbiculate, base tapered, margins entire or ± denticulate or serrulate distally, apex rounded to obtuse;

cauline 2–4, sessile, 9–20 × 4–10 mm, blade: proximals spatulate, distals obovate or elliptic, base truncate, margins entire or ± denticulate distally, apex rounded or 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.

continuous, cylindric, 2–4 cm, axis glabrous, verticillasters 2 or 3, cymes 2–5-flowered, 2 per node;

proximal bracts elliptic to ovate, 6–18 × 2–10 mm, margins entire;

peduncles and pedicels ascending to erect, 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, 1.5–2 × 0.8–1.2 mm, glabrous or ± glandular-ciliolate;

corolla white to pink, without nectar guides, funnelform, 11–15 mm, glabrous externally, densely white-villous internally abaxially, tube slightly differentiated, 3–5 mm, throat slightly inflated, 2–3 mm diam., rounded abaxially;

stamens included, pollen sacs opposite, explanate, 0.4–0.5 mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth;

staminode 8–10 mm, reaching orifice, 0.2–0.3 mm diam., tip straight, distal 2–3 mm sparsely pilose, hairs white or yellowish, to 0.6 mm;

style 9–13 mm.

10–14 × 5–7 mm.

5–8 × 3–4.5 mm, glabrous.

2–3 mm.