Flora of North America species comparison

erect, (15–)20–55(–60) cm, glabrous.

ascending to erect, 8–28(–40) cm, retrorsely hairy.

basal and cauline, glabrous;

basal and proximal cauline 20–100 × 4–24 mm, blade spatulate to oblanceolate, base tapered, apex rounded to obtuse or acute, sometimes mucronate;

cauline 2–5 pairs, sessile, (14–)23–95 × (4–)6–31 mm, blade lanceolate or ovate to trullate, base clasping to cordate-clasping, apex obtuse to acute.

basal and cauline, not leathery, retrorsely hairy, hairs sometimes appressed, white, scalelike, sometimes basal and proximal cauline glabrate or glabrous abaxially;

basal and proximal cauline petiolate, 15–60(–78) × 4–12(–17) mm, blade spatulate to oblanceolate, base tapered, margins entire or dentate-serrate, apex rounded to obtuse or acute;

cauline 3 or 4 pairs, sessile or proximals short-petiolate, 20–50(–75) × 2–5(–10) mm, blade lanceolate to oblanceolate, base tapered to clasping, margins entire or obscurely and remotely dentate, apex obtuse to acute.

interrupted, cylindric, (5–)11–38 cm, axis glabrous, verticillasters (3 or)4–12, cymes 2- or 3(–5)-flowered;

proximal bracts trullate to ovate, 11–70 × 7–38 mm;

peduncles and pedicels glabrous.

± interrupted, cylindric, (3–)6–18 cm, axis glandular-pubescent and, sometimes, retrorsely hairy, verticillasters 3–6, cymes 2–5-flowered, 2 per node;

proximal bracts lanceolate, 18–46 × 2–12 mm;

peduncles and pedicels glandular-pubescent.

calyx lobes ovate, 4.5–7 × 1.5–3.5 mm, margins entire or erose, broadly scarious, glabrous or obscurely glandular along margins distally;

corolla lavender to violet or bluish, with violet or reddish purple nectar guides, tubular-salverform, 14–23(–28) mm, glabrous externally or glandular, glabrous or sparsely white-villous internally abaxially, tube 7–9 mm, throat slightly inflated, 4–6 mm diam., rounded abaxially;

stamens included, pollen sacs opposite, 1–1.3 mm, sutures papillate;

staminode 8–11 mm, reaching orifice, 0.8–1.6 mm diam., tip recurved, distal 1–3 mm villous, hairs golden yellow, to 1.5 mm;

style 11–15 mm.

calyx lobes lanceolate, 5.5–8 × 1.2–2 mm, glandular-pubescent;

corolla light blue to bluish purple or magenta, with reddish violet nectar guides, ventricose, 14–22 mm, sparsely white-lanate internally abaxially, tube 5–7 mm, throat abruptly inflated, not constricted at orifice, (3–)5–7 mm diam., rounded abaxially;

stamens: longer pair reaching orifice, pollen sacs opposite, explanate, 0.7–1(–1.2) mm, dehiscing completely, sutures smooth;

staminode 8–9 mm, exserted, 0.3–0.5 mm diam., tip straight to recurved, distal 5–7 mm moderately to densely pilose, hairs yellow or orangish yellow, to 1.2 mm;

style 9–10 mm.

10–15 × 8–10 mm.

(6–)8–11 × 4.5–7 mm.

= 16.