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.

numerous, decumbent to ascending, branched, tufted, leafy, slender, 5–30 cm.

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.

2 per node, sessile or nearly so, blade reticulate-veined, lanceolate to ovate-lanceolate, thin, 0.8–2 cm × 3–8 mm, broadest proximally, base rounded, apex acute.

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

cymose, open, compound, leafy, single flowers borne terminally and in axils of distal leaves;

bracteoles, when present, 2.

straight, slender, 1/2–3 times longer than 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.

calyx green, obscurely 10-veined, narrowly campanulate, in fruit 6–9 × 3–4 mm, herbaceous, pubescent, veins without conspicuous pale commissures;

lobes triangular, 2–3 mm;

corolla dark red, sometimes white, clawed, claw slightly longer than calyx, limb deeply 2-lobed, 2–3 mm, appendages 2, very small;

stamens exserted;

styles 3, exserted.

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

carpophore shorter than 1 mm, pubescent.

ellipsoid, included in calyx, opening by 6 teeth;

carpophore ca. 1.5 mm.

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

brown, not winged, broadly reniform, flattened, ca. 0.8 mm, reticulate.

= 24.

= 24.