Flora of North America species comparison

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

1–many, erect, simple, slender, 10–30 cm, glandular-pubescent.

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.

connate basally, blade ciliate at base, pubescent on both surfaces;

basal numerous, ± petiolate, blade linear-oblanceolate, 1–5 cm × 1–5 mm, somewhat fleshy, apex ± acute;

cauline in 1–3 pairs, sessile, blade linear to linear-lanceolate, 1–4 cm × 1–3 mm, apex ± acute.

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, terminal, (1–)3-flowered, rarely with 1–2 flowers at proximal nodes, bracteate, bracteolate;

bracts and bracteoles leaflike, 2–10 mm.

ascending, recurved near apex, ca. equaling calyx.

usually shorter than calyx, rarely much longer, densely pubescent with purple-septate glandular hairs but not viscid.

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.

calyx prominently 10-veined, elliptic to campanulate, not inflated, not or slightly contracted at mouth, 8–9 × 3–5 mm in flower, 10–12 × 5–6 mm in fruit, to 2 times as long as broad, papery, veins green or purple, densely pubescent, with purple-septate hairs, lobes spreading, lanceolate-triangular, ca. 2 mm, margins purple tinged, round, broad, membranous;

corolla white to pink, clawed, ca. 11/4 times longer than calyx, claw equaling calyx, limb not differentiated from claw, obovate, emarginate to 2-lobed, shorter than calyx, appendages 2, ca. 1 mm;

stamens equaling petals;

styles 5, equaling petals.

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

carpophore 2–2.5 mm.

ovoid-ellipsoid, slightly longer than calyx, opening by 5 recurved teeth;

carpophore shorter than 1 mm.

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

brown, not winged, reniform, angular, less than 1 mm broad, finely papillate.

= 48.

= 24, 48, 72.