Flora of North America species comparison

prostrate, mat-forming, 5–50 cm, villous with glistening glandular hairs.

erect or ascending, usually unbranched, occasionally few branched, solitary or few, previous year's dead stems not persistent, 20–100 cm, glabrous or slightly pilose to villous.

opposite;

stipules distinct, filiform, rudimentary to 0.2 mm, glabrous or sparsely villous with glistening glandular hairs;

petiole 0.5–1.5 mm, villous;

blade oblong, ovate, or elliptic, 3–7 × 2–4 mm, base asymmetric, rounded, margins entire, apex obtuse, surfaces villous; weakly 3-veined from base, commonly only midvein conspicuous.

alternate, ascending;

stipules 0.1–0.2 mm;

petiole minute or absent;

blade oblanceolate, obovate, or elliptic, 25–55 × 5–12 mm, base cuneate to rounded, margins entire, occasionally slightly revolute, apex rounded to subacute, abaxial surface glabrous or pilose to villous, adaxial surface usually glabrous, rarely villous;

venation occasionally obscure on small leaves, midvein conspicuous.

campanulate or urceolate, 0.7–1 × 0.5–0.8 mm, villous;

glands 4, red to pink, oblong to slightly reniform, 0.1–0.2 × 0.2–0.3 mm;

appendages white to pink, deeply incised into 3–6 triangular to subulate, attenuate, acute segments, 0.3–0.6 × 0.6–1 mm, segments entire.

campanulate, 1.2–1.5 × 1.2–1.5(–2) mm, glabrous or moderately puberulent (especially near glands);

glands 5, green, reniform, 0.5 × 0.8–1 mm;

appendages white, flabellate, 2.5–3.5(–4.5) × 2.5–3.2 mm, entire.

3–7.

20–25.

ovary villous;

styles 0.3–0.4 mm, 2-fid 1/2 length.

ovary glabrous;

styles 0.8–1.4 mm, 2-fid at apex to 1/2 length.

subglobose to ovoid, 1–1.2 mm diam., villous;

columella 0.9–1.1 mm.

globose, 2.3–3 × 3.5–4.2 mm, glabrous;

columella 2–2.5 mm.

pink to light gray, narrowly ovoid, 4-angled in cross section, 0.8–1 × 0.5–0.6 mm, dimpled or with faint transverse ridges that do not pass through abaxial keel.

white or light gray, ovoid, 2.5–2.8 × 2.2 mm, with shallow and coarse depressions;

caruncle absent.

solitary at distal nodes, nodes often congested toward tips of branches;

peduncle 0.2–1.6 mm.

in terminal pleiochasia, dichasial bracts occasionally whorled or rarely alternate;

peduncle (1.5–)5–11(–13) mm (proximal to 70 mm), glabrous.