Flora of North America species comparison

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

prostrate, ascending, or erect, often numerous and wiry, less than 0.1 mm diam., 5–20 cm, glabrous, puberulent, canescent, villous, or hirsute, shorter hairs often uncinate and longer hairs straight or irregularly twisted.

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, triangular, sometimes lacerate or ciliate, 0.2–0.3 mm, glabrous or hairy;

petiole 0.3–1 mm, glabrous or hairy;

blade narrowly to broadly deltate, cordate, or reniform, 2–5(–7) × 1–4.5(–5) mm, base asymmetric, cordate to rounded, margins entire, ± revolute, apex obtuse or rounded, surfaces glabrous or hairy;

only midvein conspicuous.

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.

turbinate to campanulate, 0.8–1 × 1.1–1.3 mm, glabrous or hairy;

glands 4, green to yellow-green, oblong to subcircular, 0.2–0.4 × 0.4–0.6 mm;

appendages absent or white, forming narrow rim at edge of gland, rarely slightly wider than gland, (0–)0.1(–0.3) × 0.4–0.6 mm, distal margin entire.

3–10.

8–14.

ovary glabrous;

styles 0.8–1.5 mm, 2-fid.

ovary glabrous or hairy, subtended by triangular pad of tissue;

styles spreading, 0.3–0.4 mm, 2-fid 1/2 to nearly entire length.

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.

broadly deltoid, 1.2–1.5 × 2–2.2 mm, glabrous or hairy;

columella 0.9–1.3 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.

reddish brown, ovoid, 4-angled in cross section, 0.8–1.2 × 0.5–0.6 mm, obscurely wrinkled.

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 0.7–1.5 mm.