Flora of North America species comparison

prostrate, loosely mat-forming, 5–40 cm, glabrous, sometimes slightly glaucous.

erect, usually branched near base, 6–22 cm, glabrous.

opposite;

stipules usually distinct, linear-subulate, usually irregularly fringed or lobed, rarely laciniate, 0.4–2 mm, glabrous;

petiole 0.2–2 mm, glabrous;

blade narrowly oblong to oblong-obovate or oblong-ovate, 3–15 × 2–7 mm, base asymmetric, one side angled and other rounded to shallowly cordate, margins minutely sparsely serrulate, especially near apex and on longer side, apex rounded to obtuse, abaxial surface usually pale grayish green, adaxial surface sometimes reddish tinged or with reddish blotch, both surfaces glabrous; palmately veined at base, pinnate distally.

petiole absent;

blade linear to slightly lanceolate or linear-oblanceolate, 5–18 × 0.5–2.5 mm, base linear attenuate, margins entire, apex rounded to obtuse or acute, surfaces glabrous;

venation pinnate, midvein prominent.

obconic, 0.6–0.9 × 0.3–0.6 mm, glabrous;

glands 4, red to purple, narrowly oblong-elliptic, 0.1–0.2 × 0.1–0.5 mm;

appendages white or pinkish tinged, semilunate and fringing distal margin of gland, 0.1–0.3 × 0.1–0.3 mm, distal margin usually irregularly crenulate or lobed.

infundibular, 0.8–1.1 × 0.6–0.9 mm, glabrous;

glands 4, crescent-shaped; 0.2–0.4 × 0.5–0.6 mm;

horns divergent, 0.5–0.7 mm.

1–5.

5–10.

ovary glabrous;

styles 0.1–0.3 mm, 2-fid 1/2 length.

ovary glabrous;

styles 0.3–0.5 mm, 2-fid.

broadly ovoid, 1.3–1.9 × 1.6–2 mm, glabrous;

columella 1.3–1.5 mm.

ovoid-globose, 1.8–2.2 × 3–3.2 mm, slightly 3-lobed;

cocci rounded, smooth, glabrous;

columella 1.5–2 mm.

with thin white coat that readily falls off, surface below tan brown, oblong-ovoid, sharply angular in cross section, 1–1.4 × 0.6–0.9 mm, with 3–4(–6) prominent transverse ridges that usually interrupt abaxial keel.

white to gray, ellipsoid, 1.4–1.7 × 1–1.3 mm, with deep, irregular to rounded, shallow to concave depressions over entire surface;

caruncle reniform-ovate, depressed-conic, 0.5–0.7 × 0.7–1 mm.

solitary or in small, cymose clusters at distal nodes;

peduncle 0.5–1.6 mm.

peduncle 0–0.5 mm.

arrangement: terminal pleiochasial branches 3, 1–3 times 2-branched;

pleiochasial bracts similar in shape to but slightly shorter and wider than distal leaves;

dichasial bracts distinct, not imbricate, reniform-ovate to subdeltate-ovate or broadly ovate-lanceolate, base obliquely truncate to rounded, margins entire, apex obtuse to broadly acuminate;

axillary cymose branches 0–3.

= 22.