Flora of North America species comparison

erect, branched, rarely simple, 15–45 cm, with long, often crinkled hairs mixed with short pubescence, viscid-glandular distally.

erect, simple proximal to inflorescence, 25–80 cm, puberulent, glandular distally.

2 per node, blade with coarse, ascending, scabrous pubescence on both surfaces;

basal few, withering, blade oblanceolate to spatulate-petiolate, 0.5–5 cm × 3–15 mm;

cauline blades oblanceolate to lanceolate, 1–7 cm × 1–15 mm, apex obtuse or shortly acuminate to acute.

in 5–7 pairs proximal to inflorescence, sessile, blade lanceolate, narrowed to base, apex acute;

proximal withering, becoming smaller in inflorescence, 2–5 cm × 3–10 mm, sparsely scabrous-pubescent on both surfaces.

open, with racemose branches, internodes and bracts usually ca. equaling fruiting calyx, 1–5 mm, longer proximally.

cymose, terminal, pedunculate, 1–3-flowered, open, bracteate, bracteolate, 10–25 cm, pubescence dense, hairs septate-glandular, septa colorless;

cymes paired at each node;

peduncle ascending, 1–3 cm;

bracts and bracteoles leaflike, reduced distally to 2 mm.

not bent in fruit, 1/2 to equaling calyx.

5–8 mm diam.;

calyx prominently 10-veined, narrowly tubular-ovoid in flower, ovoid in fruit, constricted at mouth, 7–10 × 3–5 mm, membranous between veins, margins dentate, hispid, hairs ca. 2 mm, veins parallel, lobes lanceolate, 2–2.5 mm, apex greenish purple, acute;

petals white or pink, often with dark spot or dark pink throughout, clawed, claw equaling calyx, limb elliptic to obovate, lobed or unlobed, to 6 mm, appendages 2, oblong to narrowly lanceolate, 1–1.5 mm;

stamens equaling or shorter than calyx;

stigmas 3, included in calyx.

nocturnal;

calyx prominently 10-veined, campanulate, 12–14 × 4–6 mm in flower, becoming obovate to obconic and to 10 mm broad in fruit, not contracted proximally around carpophore, margins dentate, glandular-pubescent, veins parallel, with pale commissures, lobes lanceolate-acuminate, 3–4 mm, membranous, margins narrow, apex blunt, veins green;

corolla pale pink, greenish abaxially, clawed, claw equaling calyx, limb oblong, deeply 2-lobed, 4–6 mm, appendages 2, oblong, ca. 1 mm;

stamens equaling petals;

stigmas 3, equaling petals.

equaling calyx, opening with 6 recurved, narrowly triangular teeth;

carpophore shorter than 1 mm, pubescent.

obovoid, equaling calyx and often splitting it at maturity, opening by 5 teeth;

carpophore 3–4 mm.

dark reddish brown, reniform, angular with concave, radially ridged faces, broad outer edge transversely ridged and verrucose, ca. 0.5 mm broad.

black, reniform, 2–3 mm, tuberculate;

tubercles conic, in concentric rows.

= 24.

= 48.