Flora of North America species comparison

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

prostrate, much-branched from base, not wiry, 10–40 cm, papillose-scabridulous.

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 1-veined, 2.5–3 mm, proximal part cylindric, distal part laciniate;

petiole 0–1 mm;

blade bluish green, narrowly elliptic or oblanceolate, 5–16 × 1–4 mm, margins flat, apex obtuse or acute, papillose-scabridulous;

stem leaves 1–1.5(–2) times longer than adjacent branch leaves, distal leaves overtopping flowers.

axillary;

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

axillary;

cymes uniformly distributed, 3–6-flowered.

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

exserted from ocreae, 3–5 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.

closed;

perianth 1–1.5 mm;

tube 12–27% of perianth length;

tepals overlapping, green with white or pink margins, petaloid, not keeled, elliptic, cucullate;

midveins unbranched, thickened;

stamens 5.

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.

enclosed in perianth, black-brown, broadly ovate, 2–3-gonous, 1.5–2 mm, faces subequal, apex not beaked, edges concave, shiny, smooth; late-season achenes common, 2–4 mm.

= 20.