Flora of North America species comparison

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

1–10, procumbent to ascending, branched at most nodes, proximal branches divaricate, not wiry, 10–40 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 (6–)8–12 mm, proximal part cylindric, distal part with veins conspicuous, soon disintegrating into persistent fibers;

petiole 0.3–2 mm;

blade green, lateral veins strongly raised adaxially, narrowly elliptic to linear-lanceolate, (10–)15–27(–30) × 0.5–4.8(–8) mm, (4.5–)5–15(–19) times as long as wide, apex acute;

stem leaves 1.2–2.4 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.

enclosed in or exserted from ocreae, 1.5–3 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 2.2–3.1 mm, 1.6–2.6 times as long as wide;

tube 26–40(–42)% of perianth length;

tepals often not overlapping, green with pink or red margins, oblong, ± cucullate, outer tepals not 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 exserted from perianth, blackish brown, ovate, 3-gonous, 2.1–2.6(–3) mm, faces subequal or unequal, flat to concave, apex straight, coarsely striate-tubercled; late-season achenes uncommon, 2.5–4 mm.

uniformly distributed along stems and branches, 1–3-flowered.

= 60.