Flora of North America species comparison

erect, green, simple or divaricately branched, ± wiry, 4–40 cm, papillose-scabridulous.

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

uniformly distributed, not articulated to ocreae, basal leaves usually caducous, distal leaves abruptly reduced to bracts;

ocrea 5–10 mm, glabrous or papillose-scabridulous, proximal part cylindric, distal part white or tawny, disintegrating into ± bristly-fringed fibers;

petiole absent;

blade 3-veined, without pleats, linear, 5–25(–30) × 0.5–2 mm, margins revolute, papillose-denticulate or smooth, apex mucronate or weakly spine-tipped.

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 in distal axils, 1-flowered.

axillary;

cymes uniformly distributed, 3–6-flowered.

absent.

exserted from ocreae, 3–5 mm.

open or closed;

perianth 2.5–3.5 mm;

tube 10–20% of perianth length;

tepals overlapping, uniformly white to pink, petaloid, elliptic, navicular, apex acute to acuminate;

midveins unbranched;

stamens 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 slightly exserted from perianth, brown, narrowly elliptic, 1.8–2.2 mm, faces subequal, shiny, smooth.

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.