Flora of North America species comparison

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

procumbent to ascending, branched, leafy, 15–45 cm, lanuginose, often sparsely so, viscid distally.

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;

proximal with blade obovate, spatulate, apex obtuse;

distal sessile, blade ovate to lanceolate, 2–5 cm × 2–20 mm, apex acute, sparsely pubescent adaxially, more densely so abaxially.

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

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

peduncle ascending.

pseudoracemose, lax, solitary flowers in axils of leafy bracts.

ascending, recurved near apex, ca. equaling calyx.

erect in flower, sharply deflexed at base in fruit, usually shorter than calyx, pilose and stipitate-glandular.

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, obovoid, especially in fruit, clavate, constricted around carpophore and narrowed at mouth, umbilicate, inflated, 13–18 mm, loose and papery, pubescence glandular and eglandular, sparsely lanuginose, veins parallel, green or purple, with pale commissures, lobes triangular, ca. 2 mm, apex obtuse;

corolla bright pink, clawed, claw equaling calyx, limb obtriangular, 2-lobed, 7–11 mm, lobes divergent, ovate, appendages 2, shorter than 1 mm, apex acute;

stamens slightly longer than petal claw;

stigmas 3, equaling petals.

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

carpophore 2–2.5 mm.

included in calyx, ovoid-conic, opening by 6 teeth;

carpophore 3–6 mm.

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

dark brown, broadly reniform, 1.3–1.5 mm, with concentric crescents of shallow tubercles on both sides, margins with larger, deeper tubercles.

= 48.

= 24 (Europe).