Flora of North America species comparison

ascending to erect, (10–)15–50(–55) cm, retrorsely hairy proximally, glandular-pubescent distally.

ascending, 13–40 cm, glabrous or retrorsely hairy, usually in lines, not glaucous.

basal and cauline, not leathery, glabrate or puberulent to scabrous;

basal and proximal cauline petiolate, 20–85(–110) × (4–)7–18(–20) mm, blade oblanceolate or obovate to lanceolate, base tapered, margins entire to obscurely or distinctly serrate, apex obtuse to acute;

cauline 2–5(or 6) pairs, sessile or proximals short-petiolate, 25–65 × (3–)7–19(–21) mm, blade ovate to lanceolate, base tapered to clasping, margins entire or serrate to dentate, apex acute.

persistent, 2–6 pairs, distals usually distinctly smaller than proximals, petiolate or sessile, (5–)6–50(–60) × 3–12 mm, blade lanceolate to oblanceolate or elliptic, base tapered to clasping, margins entire or ± serrate, or dentate, apex obtuse to acute, glabrous, not glaucous.

continuous or interrupted, cylindric, 4–24(–30) cm, axis densely glandular-pubescent, verticillasters (2 or)3–10, cymes 2–7-flowered, 2 per node;

proximal bracts lanceolate, 17–65 × 3–17 mm;

peduncles and pedicels densely glandular-pubescent.

continuous to ± interrupted, secund, 3–11 cm, axis sparsely glandular-pubescent, sometimes also retrorsely hairy proximally, verticillasters 2–7, cymes 1-flowered;

proximal bracts lanceolate, 4–16 × 1–5 mm;

peduncles and pedicels ascending to erect, glandular-pubescent.

calyx lobes ovate to lanceolate, 4–7 × 1.5–3 mm, glandular-pubescent;

corolla white, rarely tinged pink or lavender, with red or reddish purple nectar guides, funnelform, (12–)16–20 mm, glandular-pubescent internally, tube 4–6 mm, throat gradually inflated, not constricted at orifice, (4–)6–8 mm diam., rounded abaxially;

stamens included, pollen sacs opposite, explanate, 0.7–1.1 mm, dehiscing completely, sutures smooth;

staminode 8–9 mm, included, 0.3–0.4 mm diam., tip straight to recurved, distal 3–6 mm sparsely to moderately villous, hairs yellowish, to 1 mm;

style 9–11(–13) mm.

calyx lobes lanceolate to linear, (7–)9–13(–15) × 1.8–3 mm, glandular-pubescent;

corolla bluish lavender to purplish or violet, unlined internally or lined with faint bluish lavender nectar guides abaxially, not personate, funnelform, 28–48 mm, glabrous externally, sparsely to moderately white-lanate or -villous internally abaxially, tube (5–)8–10 mm, throat 8–13 mm diam.;

stamens included, pollen sacs 1–1.3(–1.5) mm;

staminode 7–12 mm, slightly flattened distally, 0.1–0.3 mm diam., tip straight to recurved, distal 1–4 mm sparsely to densely pubescent, hairs yellow, to 1.2 mm;

style 24–27 mm.

8–12 × 4–7 mm.

8–13 × 5.5–7 mm.

= 16.