Flora of North America species comparison

erect or ascending, unbranched or branched, 10–70 cm, glabrous.

prostrate, 10–35 cm, glabrous or pilose.

petiole absent or to 0.2 mm;

blade oblanceolate, oblong-oblanceolate, spatulate, or cuneate, 10–50 × 6–11 mm, base broadly attenuate to rounded or shallowly cordate-clasping, margins finely serrulate (usually distally), apex usually rounded to obtuse, occasionally slightly retuse or obcordate proximally, bluntly mucronate, surfaces glabrous;

venation pinnate, midvein prominent.

opposite;

stipules distinct, subulate, 0.5–1.6 mm, glabrous or pilose;

petiole 0.3–2 mm, glabrous or pilose;

blade ovate to deltate or falcate, 2.3–13 × 1.5–6 mm, base asymmetric, usually cordate, rarely rounded, margins occasionally reddish, entire, often revolute, apex acute to obtuse, occasionally mucronate, surfaces glabrous or pilose;

midvein conspicuous, lateral veins frequently visible abaxially.

campanulate to cupulate, 0.6–1(–1.5) × 0.8–1.2 mm, glabrous;

glands 4–5, elliptic, oblong, to slightly reniform, 0.2–0.6 × 0.4–1 mm;

horns absent.

campanulate, 1–2.5 × 1.3–2.4 mm, glabrous or pilose;

glands 4, yellow becoming deep red, elliptic or oblong to orbiculate, 0.4–0.6 × 0.5–0.7 mm;

appendages absent or whitish, orbiculate, 0.1–0.2 × 0.3–0.5 mm, distal margin entire.

3–10.

30–70.

ovary glabrous;

styles 0.8–1.5 mm, 2-fid.

ovary glabrous or pilose;

styles 0.4–0.5 mm, 2-fid at apex.

depressed-globose, 2–3.5 × 4 mm, 3-lobed;

cocci rounded, verrucose, verrucae 0.1–0.2 mm, glabrous;

columella 1.4–2.2 mm.

subglobose to broadly ovoid, 1.4–2.7 × 1.9–3.1 mm, glabrous or pilose;

columella 1.4–2 mm.

red-brown to dark purple, occasionally ± glaucous, broadly ellipsoid-ovoid to nearly globose, 1.3–2.5 × 1.5–1.8 mm, smooth, reticulate, or finely low-ridged;

caruncle irregularly reniform to round, subconic to lenticular, 0.3–0.4 × 0.5–0.6 mm.

whitish gray to black, ovoid to oblong, terete to bluntly subangled in cross section, 1.1–1.7 × 0.8–1.3 mm, rugose or smooth.

arrangement: terminal pleiochasial branches 3(–5), each 1–3 times 2-branched;

pleiochasial bracts broadly ovate to ovate-oblong, shorter and wider than distal leaves;

dichasial bracts distinct, broadly ovate, ovate-triangular, or ovate-elliptic, base cordate-clasping or subcordate to rounded, margins serrulate, apex rounded to obtuse or acute;

axillary cymose branches (0–4)5–12.

peduncle 0.3–1(–1.5) mm.

solitary at distal nodes;

peduncle 0.9–2.2 mm.