Flora of North America species comparison

ascending to erect, 25–55(–65) cm, retrorsely hairy and glandular-villous proximally, retrorsely hairy and glandular-pubescent distally, glandular hairs sometimes sparse, not glaucous.

ascending to erect, 13–80 cm, glabrous or retrorsely hairy, hairs pointed, not glaucous.

basal and cauline, basal often withering by anthesis, not leathery, sparsely to densely pubescent, sometimes also with scattered glandular hairs, abaxially, sparsely pubescent adaxially;

basal and proximal cauline 20–120(–180) × 5–35(–40) mm, blade spatulate to obovate or ovate, base tapered, margins subentire or ± serrate or dentate, apex rounded to obtuse or acute;

cauline 4–8 pairs, sessile, 22–100 × 4–24 mm, blade ovate to lanceolate, base truncate to clasping, margins subentire or ± serrate or dentate, apex acute to acuminate.

cauline, opposite, glabrous, sometimes sparsely puberulent, hairs pointed, adaxially along midvein, not glaucous;

cauline 3–6 pairs, petiolate proximally or sessile distally, (12–)30–80 × (7–)15–50 mm, blade ovate-oblong proximally, ovate or lanceolate distally, base truncate to tapered proximally, cordate-clasping distally, margins serrate, apex obtuse to acute.

interrupted, conic, 5–26(–30) cm, axis sparsely to densely glandular-pubescent, verticillasters 3–8, cymes 2–8(–16)-flowered, 2 per node;

proximal bracts lanceolate, 7–72 × 2–22 mm, margins entire or ± dentate;

peduncles and pedicels ascending, sparsely to densely glandular-pubescent.

continuous or interrupted, cylindric, 2–18(–28) cm, axis retrorsely hairy, verticillasters 1–3(–5), cymes 3–10-flowered, 2 per node;

proximal bracts ovate, 13–35(–80) × 6–16(–36) mm;

peduncles and pedicels ascending to erect, retrorsely hairy to puberulent.

calyx lobes ovate to lanceolate, (2–)3–5 × 1–3 mm, sparsely glandular-pubescent;

corolla white, sometimes tinged lavender or blue, with reddish purple nectar guides, tubular to tubular-funnelform, 16–22 mm, glandular-pubescent externally, moderately whitish or yellowish lanate internally abaxially, tube 4–6 mm, throat slightly inflated, 4–7 mm diam., 2-ridged abaxially;

stamens included, pollen sacs opposite, navicular, (0.8–)1–1.2 mm, dehiscing completely, connective splitting, sides glabrous, sutures papillate;

staminode 10–12 mm, exserted, 0.2–0.3 mm diam., tip straight to slightly recurved, distal 8–9 mm moderately to densely villous, hairs yellow or golden yellow, to 1.5 mm;

style 12–14 mm.

calyx lobes obovate to lanceolate, 3.5–11 × 1–3 mm, sparsely pubescent and ciliolate along margins, sometimes glabrate;

corolla blue to violet or purple, without nectar guides, weakly ventricose, 17–25(–28) mm, glabrous externally, glabrous or sparsely to densely white-lanate internally abaxially, tube 4–6 mm, throat gradually inflated, 5–8 mm diam., 2-ridged abaxially;

stamens included, filaments glabrous, pollen sacs parallel, 1.1–1.6 mm, distal 1/2–2/3 indehiscent, sides glabrous, sutures denticulate, teeth to 0.1 mm;

staminode 12–14 mm, exserted, 0.3–0.6 mm diam., distal 2–7 mm sparsely lanate, hairs yellow, to 1.5 mm;

style 10–16 mm.

5–7 × 3–5 mm, glabrous.

5–8 × 3–5.5 mm.

= 16.

= 16.