Flora of North America species comparison

erect, usually simple, 30–150 cm, with short, dense, eglandular pubescence, sparsely so toward base.

erect, simple proximal to inflorescence, slender or stout, 10–80 cm, puberulent.

sessile, 2 per node;

blade prominently 3–5-veined, ovate-acuminate, round at base, (4–)6–10(–13) cm × (20–)30–50(–90) mm, appressed-pubescent on both surfaces.

2 per node;

basal petiolate, blade oblanceolate, 6–25 cm × 4–30 mm, retrorsely puberulent on both surfaces;

cauline in 1–12 pairs, usually sessile, blade well developed, lanceolate to ovate-lanceolate, oblanceolate, or rarely linear or linear-lanceolate.

paniculate, narrow, many-flowered, open, bracteate, pedunculate, 10–50 × 3–5 cm, densely puberulent;

bracts narrowly lanceolate, 3–15 mm, apex acuminate;

peduncle ascending.

cymose, pseudo-racemose, or rarely paniculate, erect or nodding, with 1–12 flowering nodes, 2–20-flowered, open or dense, flowers paired or in many-flowered whorls, bracteate, cymes often sessile;

bracts 3–60 mm.

ascending, recurved near apex, ca. equaling calyx.

becoming deflexed at base of calyx, 1/4–2 times calyx, glandular-pubescent.

nocturnal;

calyx prominently 10-veined, tubular to narrowly campanulate and 6–9 × 3–4 mm in flower, turbinate and 10–12 × 4–5 mm in fruit, narrowed proximally around carpophore, veins parallel, green, broad, with pale commissures, puberulent, sometimes with few glands, lobes triangular-acute, 2–3 mm;

corolla white, clawed, claw equaling calyx, broadened into limb, limb obtriangular, deeply lobed, 7–9 mm, lobes ca. 8, linear, appendages minute;

stamens slightly longer than corolla;

styles 3, ca. 2 times as long as corolla.

shortly pedicellate or sessile;

calyx prominently 10-veined, campanulate or tubular in flower, clavate, turbinate, or fusiform in fruit, constricted or not at base around carpophore in fruit, 8–20 × 3–8 mm, veins parallel, purplish or green, with pale commissures;

lobes lanceolate, 2–5 mm, apex obtuse with broad membranous margin and tip;

corolla white, greenish white, or pink, sometimes tinged pink or purple, clawed, claw longer than calyx, limb deeply 2–4-lobed, often with smaller lateral teeth, 2.5–8 mm, appendages 1–3 mm;

stamens ± equaling corolla claw;

styles 3–4, ± equaling corolla claw.

narrowly ovoid, slightly longer than calyx, opening by 3 (splitting into 6) ascending teeth;

carpophore 2–2.5 mm.

ovoid to ellipsoid, equaling or slightly longer than calyx, opening by 6 or 8 teeth;

carpophore 1.5–6 mm.

dark brown, reniform, 0.8–1.5 mm, shallowly tuberculate.

brown or grayish brown, reniform, 1–1.5 mm, margins papillate, rugose on sides.

= 48.