Flora of North America species comparison

prostrate to erect, branched, flexuous, 5–200 cm.

1–3, erect to ascending, ± unbranched, 5–15 cm, or numerous, procumbent, mat-forming, extensively branched, 20–70(–200) cm.

ocrea 3–15 mm, proximal part cylindric or ± funnelform, distal part silvery, hyaline, soon disintegrating into persistent fibers or nearly completely deciduous;

petiole 0.3–9 mm;

blade green to gray-green, narrowly elliptic, lanceolate, elliptic, obovate, or spatulate, 6–50(–60) × 0.5–22 mm, margins flat, apex acute, obtuse, or rounded;

stem leaves 1–4 times as long as adjacent branch leaves;

distal leaves overtopping flowers.

ocrea 3.5–6.5(–8) mm, proximal part cylindric, distal part silvery, relatively persistent, with inconspicuous veins, leaving almost no fibrous remains after disintegrating;

petiole 0.3–2(–3.5) mm;

blade green or gray-green, lateral veins visible but not raised abaxially, lanceolate to elliptic, oblanceolate, or obovate, 6–30(–45) × 3–6(–13) mm, 2.5–5.6(–10) times as long as wide, apex acute to obtuse;

stem leaves 1–2.5 times as long as branch leaves.

axillary;

cymes uniformly distributed or aggregated at tips of stems and branches, 1–6(–8)-flowered.

enclosed in or exserted from ocreae, 1.5–5 mm.

mostly enclosed in ocreae, 1–2.5 mm.

closed or semi-open;

perianth 1.8–5.5 mm;

tube 20–57% of perianth length;

tepals overlapping or not, green or reddish brown with white, pink, or red margins, petaloid, not keeled, oblong to obovate, often cucullate in fruit;

midveins branched or unbranched, thickened or not;

stamens 5–8.

perianth (2–)2.3–3.4(–3.6) mm, 0.9–1.3(–1.5) times as long as wide;

tube 20–36% of perianth length;

tepals overlapping, green with white or sometimes pink margins, oblong, apex cucullate, outer tepals pouched at base;

veins branched, moderately to strongly thickened;

stamens 7–8.

enclosed in or exserted from perianth, light to dark brown, ovate, (2–)3-gonous, 1.2–4.2 mm, faces subequal or unequal, apex not beaked, edges slightly concave, dull, usually coarsely striate-tubercled, sometimes obscurely tubercled; late-season achenes common or not, 2–5 mm.

usually enclosed in perianth, light brown to brown, ovate, 3-gonous, (1.8–)2–2.8(–3) mm, faces subequal, concave to flat, apex straight, coarsely striate-tubercled to obscurely tubercled; late-season achenes common, 2.5–5 mm.

mostly uniformly distributed, but also aggregated at tips of stems and branches, 2–6-flowered.

= 60.