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.

simple but with short axillary leafy shoots, leafy, 40–60 cm, glossy, ± glabrous, with 10–20 nodes proximal to inflorescence.

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.

basal withered at time of flowering;

cauline whorled, appearing fasciculate (more than 4) at each node, connate at base, reduced distally, tapered at both ends, blade linear to very narrowly elliptic-lanceolate, 0.5–8 cm × 1–12 mm, base broadened, margins scabrous, apex acute, subglabrous to minutely puberulent on both surfaces.

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

thyrsate, verticillate, open, with many short, ascending branches bearing large numbers of small, unisexual flowers, bracteate;

bracts connate basally, triangular, 2–10 mm, margins finely ciliate, apex acuminate.

ascending, straight, fasciculate, wiry, ± equaling calyx, glabrous or sparsely and minutely puberulent.

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.

mostly unisexual;

calyx pale green, indistinctly 10-veined, elliptic, constricted near base, umbilicate, ca. 5 × 2 mm, lobes with thickened midrib, ovate-obtuse, 0.2 mm, margins crenate, membranous;

corolla greenish white, clawed, claw and limb not differentiated, narrowly oblong, unlobed, less than 2 times length of calyx, appendages absent;

stamens exserted, longer than corolla;

styles 3, exserted, longer than corolla.

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

carpophore shorter than 1 mm, pubescent.

green, ovoid-conic, longer than calyx, opening by 6 teeth;

carpophore shorter than 1 mm.

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

brown, winged, reniform, ca. 1 mm, faces with shallow radiating ridges.

= 24.