Flora of North America species comparison

several, simple proximal to inflorescence, 30–80 cm, puberulent, becoming subglabrous near base.

erect, simple or with ascending branches, (20–)40–100 cm, coarsely puberulent, stipitate-glandular, viscid distally.

withering proximally, in whorls of 4, ± sessile to short-petiolate, largest in mid-stem region;

blade lanceolate to ovate-lanceolate, 3–10 cm × 4–40 mm, apex acuminate, puberulent on both surfaces, sparsely so adaxially.

mid and proximal stem pairs connate, blade 1–several-veined, oblanceolate to narrowly lanceolate, (3–)5–12 cm × (3–)8–15 mm, apex acute, veins parallel;

basal leaf blades oblanceolate and ± obtuse, sparsely to moderately puberulent on both surfaces, rarely subglabrous.

paniculate, open, bracteate, bracteolate, branches elongate, puberulent;

bracts and bracteoles linear-lanceolate, 2–15 mm.

several–many-flowered, open, bracteate;

bracts resembling leaves but smaller.

straight, often with 1 or 2 pairs of bracteoles, slender, 1/2–3 times calyx, glabrous or scabrous-puberulous.

ascending, straight, equaling or longer than calyx, densely stipitate-glandular, viscid.

calyx obscurely 10-veined, broadly campanulate, becoming obtriangular in fruit, 7–11 × 6–10 mm, herbaceous, margins dentate, very narrow, membranous, sparsely puberulent, lobes broadly triangular, 2–3 mm;

corolla white, ca. 2 times longer than calyx, limb obtriangular, narrowed into claw, divided ca. 1/2 its length into 4–12 lobes, appendages absent;

stamens equaling petals;

styles 3, longer than petals.

calyx prominently 25–30-veined, lobed to 1/3 its length but splitting further in fruit, umbilicate, narrowly conic in flower, conic-ovoid and inflated in fruit, 20–30 × to 15 mm, margins dentate, puberulent and stipitate-glandular, lobes 5, lanceolate, narrow, acuminate, veins parallel;

corolla deep pink, clawed, claw equaling or longer than calyx, limb slightly lobed or unlobed, broadly obovate, spatulate, 8–12 mm, appendages 2–4 mm, lobed or dentate;

stamens equaling claw;

stigmas 3, equaling claw.

globose, opening by 3 broadly triangular teeth;

carpophore 2–3 mm.

flask-shaped, 15–20 mm, opening by 6 recurved, lanceolate teeth;

carpophore to 2 mm.

dark brown, reniform, ca. 1 mm, papillate.

brown, reniform, 1.2–1.8 mm broad, tuberculate.

= (34), 48.

= 20, 24 (Europe, Asia).