Flora of North America species comparison

erect or ascending, branched, solitary or few, previous year's dead stems not persistent, 20–40 cm, usually glabrous, rarely strigose to sericeous at nodes.

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

alternate;

stipules to 0.1 mm;

petiole to (0–)1–2 mm, glabrous or strigose to sericeous;

blade usually linear, occasionally elliptic, rarely ovate, proximal often greatly reduced and often scalelike, 10–30 × 1.5–6 mm, base cuneate, margins entire, occasionally sparsely ciliate, apex rounded or broadly acute, abaxial surface glabrous or sparsely strigose to sericeous, adaxial surface glabrous;

venation obscure, only midvein conspicuous.

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.

campanulate, 1–1.2 × 1.3–1.5(–1.7) mm, glabrous or strigose to sericeous on distal 1/2;

glands 5, green, reniform, 0.3 × 0.6 mm;

appendages white, semicircular, 0.3–0.4 × 0.6–0.8 mm, entire.

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.

20–25.

1–5.

ovary glabrous or sparsely strigose to sericeous;

styles 0.6–1.1 mm, 2-fid at apex to 1/2 length.

ovary glabrous;

styles 0.1–0.3 mm, 2-fid 1/2 length.

globose, 2.5–3.2 × 4.3–5.1 mm, glabrous or sparsely strigose to sericeous;

columella 2.4–3.1 mm.

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

columella 1.3–1.5 mm.

usually gray to black, occasionally brown, ovoid-globose, 2.2 × 1.8 mm, smooth;

caruncle absent.

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.

in terminal pleiochasia (fertile axillary branches occasionally present);

peduncle 6.5–17 mm, filiform, glabrous.

solitary or in small, cymose clusters at distal nodes;

peduncle 0.5–1.6 mm.

= 22.