Flora of North America species comparison

prostrate or ascending, brown, branched, rooting at nodes, not wiry, 10–100 cm, glabrous, covered with remains of lacerate, hyaline ocreae.

erect to ascending, sparingly branched in distal 1/2, not wiry, 15–75 cm.

crowded at branch tips, articulated to ocreae, basal leaves caducous or persistent, distal leaves not reduced in size;

ocrea 15–20 mm, glabrous, proximal part cylindric to funnelform, distal part silvery, entire or slightly lacerate, disintegrating into persistent white-gray curly fibers;

petiole 0–0.5 mm;

blade 1-veined, without pleats, linear to oblanceolate, (5–)10–20(–33) × 3–8 mm, coriaceous, margins revolute, smooth, apex acute or mucronate.

ocrea 7–12 mm, proximal part cylindric, distal part usually persistent, with strong veins, margins entire or lacerate, silvery, later disintegrating into ± persistent brown fibers;

petiole 1–5 mm;

blade light green or yellowish, elliptic to obovate, 30–60(–80) × (8–)10–25 mm, margins flat, apex obtuse;

stem leaves 1.5–3.5(–4) times longer than branch leaves;

distal leaves overtopping flowers in distal part of inflorescence.

axillary;

cymes crowded in distal axils, 2–5-flowered.

axillary;

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

enclosed in ocreae, erect to spreading, 2–5 mm.

mostly exserted from ocreae, 3–7 mm.

semi-open or open;

perianth (4.5–)6–10 mm;

tube 22–48% of perianth length;

tepals partially overlapping, uniformly pink or white, reddish brown when dried, petaloid, oblong-ovate to ± lanceolate, apex rounded;

midveins pinnately branched;

stamens 8.

closed;

perianth 2.8–3.8(–4.2) mm;

tube 20–37% of perianth length;

tepals overlapping, green with yellowish, rarely whitish green, margins, sepaloid, not keeled, oblong to obovate, cucullate;

midveins branched, moderately to heavily thickened;

stamens 7–8.

enclosed in or slightly exserted from perianth, black, ovate, 4–5 mm, faces subequal, shiny, smooth.

enclosed in perianth, brown to tan, ovate, 3-gonous, 2.3–3.5 mm, faces subequal, ± concave, apex not beaked, edges concave, dull, striate-tubercled; late-season achenes uncommon, 4–5 mm.