Flora of North America species comparison

erect when young, decumbent or prostrate later, moderately branched especially from base, not wiry, 50–70 cm.

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

ocreae 5–12 mm, proximal part cylindric, distal part soon disintegrating into brown fibers;

petiole 0.3–1.5 mm;

blade light yellowish green, elliptic to obovate, 8–35 × 3–15 mm, margins flat, apex rounded;

stem leaves 1–2.1(–3) times longer than branch leaves;

distal leaves overtopping flowers.

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.

axillary, cymes in axils of most leaves and toward tips of stems and branchs, 1–3(–5)-flowered.

axillary;

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

enclosed in ocreae, 1.3–1.8(–2) mm.

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

closed;

perianth 2.6–4 mm;

tube 40–55% of perianth length;

tepals incurved, yellow-green with yellow to green, rarely pinkish, margins, sepaloid, ± keeled, narrowly oblong, cucullate;

midveins unbranched, moderately to heavily thickened, tepals appearing keeled;

stamens 5–8.

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.

enclosed in perianth, yellow-green to tan, ovate, 3-gonous, 2.4–3.5 mm, faces unequal, apex not beaked, edges concave or nearly straight, dull, uniformly tubercled; late-season achenes common, 3–5 mm.

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.

= 40, 60.