Flora of North America species comparison

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

prostrate to ascending, often mat-forming, 7–35 cm, glabrous, pilose, or villous.

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, divided nearly to base into 3–5 subulate to filiform segments, these sometimes 2-fid toward apex or laciniate, 0.7–2.1 mm, glabrous;

petiole 0.5–1 mm, glabrous, villous, or pilose;

blade ovate, oblong, elliptic, or obovate, 3–13 × 2–7 mm, base asymmetric, rounded to oblique, margins usually entire in proximal 1/2 and serrulate in distal 1/2, rarely serrulate nearly to base, apex obtuse or truncate, surfaces often with red spot in center, not papillate, glabrous, villous, or pilose; weakly 3-veined from base, usually 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.

obconic, 0.6–1.1 × 0.6–1 mm, glabrous, villous, or pilose;

glands 4, yellow to pink, usually oblong to reniform, 0.1 × 0.2–0.3 mm;

appendages white to pink, oblong or flabellate, rarely absent, (0–)0.1–0.2 × (0–)0.3–0.4 mm, distal margin entire or shallowly lobed.

3–10.

5–20.

ovary glabrous;

styles 0.8–1.5 mm, 2-fid.

ovary glabrous, villous, or pilose;

styles 0.3–0.4 mm, 2-fid 1/2 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 ovoid to oblate, cocci not elongated nor terminating in empty portion, 1.4–1.9 × 1.5–2, glabrous, pilose, or villous;

columella 1.2–1.6 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.

pink, light brown, or grayish, ovoid to narrowly ovoid, 4-angled in cross section, 1–1.4 × 0.6–0.9 mm, smooth to dimpled or rugose, or with faint transverse ridges that do not interrupt abaxial keel.

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 or in small, cymose clusters at distal nodes or on congested, axillary branches;

peduncle 0.4–1.7 mm.