Flora of North America species comparison

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

erect, branched, densely clumped, previous year’s dead stems persistent, 25–45(–60) cm, glabrous, striate.

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.

alternate, persisting, usually reflexed, occasionally spreading;

stipules 0.1–0.3 mm;

petiole 0.2–2.2 mm, glabrous;

blade narrowly ovate to lanceolate proximally, narrowly lanceolate, linear, or filiform distally, 10–32 × 0.5–6.5 mm, base cuneate, margins entire, apex acute, surfaces pilose when young, sparsely strigose or glabrous with age;

venation obscure, only midvein conspicuous.

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.

turbinate to campanulate, 2.2–3.7 × 1.5–2.5 mm, moderately strigose;

glands 5, dark green, reniform, 0.7–1.1 × 1–1.6 mm;

appendages white to pink, flabellate, 0.5–1.5 × 0.8–2.2 mm, dentate or erose.

1–5.

20–25.

ovary glabrous;

styles 0.1–0.3 mm, 2-fid 1/2 length.

ovary strigose;

styles 1–1.3 mm, 2-fid at apex.

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

columella 1.3–1.5 mm.

subglobose, 2–3 × 4 mm, sparsely strigose;

columella 2–3 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.

gray-green to gray-brown, globose-ovoid, 1.8–2.2 × 1.2–1.6 mm, longitudinally pitted;

caruncle absent.

solitary or in small, cymose clusters at distal nodes;

peduncle 0.5–1.6 mm.

in terminal monochasia (thus appearing solitary at alternate nodes);

peduncle 0.5–2.5 (or 10–25) mm, glabrous or sparsely strigose.

= 22.