Flora of North America species comparison

spreading to erect, zigzagged, green, simple or branched from base, wiry, 5–12(–15) cm, glabrous.

erect, green or brown-ish, simple or branched from below middle, not wiry, 5–50 cm, glabrous or papillose-scabridulous.

uniformly distributed, articulated to ocreae, basal leaves persistent, distal leaves abruptly reduced to bracts;

ocrea 2–5 mm, glabrous, proximal part funnelform, distal part lacerate;

petiole essentially absent;

blade 1-veined, not pleated, oblanceolate to obovate, 5–20 × 2–5 mm, margins revolute, never touching along midrib, sparsely papillose-denticulate, apex rounded or apiculate.

uniformly distributed, articulated to ocreae, basal leaves caducous or persistent, distal leaves abruptly reduced to bracts;

ocrea 6–15 mm, glabrous or papillose-scabridulous, proximal part cylindric, distal part soon disintegrating into a few brown fibers;

petiole 0.1–1 mm;

blade 1-veined, with 1 pleat on each side of midrib, narrowly lanceolate to linear, 25–40 × 1–8 mm, margins usually flat, papillose-denticulate, apex mucronate or cuspidate.

axillary and terminal, spikelike, dense;

cymes congested at tips of stems and branches, 3–5-flowered.

axillary and terminal, spikelike, slender, elongate;

cymes spaced along branches, 1–2(–3)-flowered.

enclosed in ocreae, erect to spreading, 2–3 mm.

enclosed in ocreae, erect, 1–1.5 mm.

open;

perianth 2–2.5 mm;

tube 12–25% of perianth length;

tepals overlapping, uniformly white, petaloid, oblong to obovate, cucullate, navicular in distal 1/4, apex rounded;

midveins unbranched;

stamens 8.

closed;

perianth 2.5–4.2 mm;

tube 15–22% of perianth length;

tepals overlapping, green, often brownish when dried, with pink or white margins, petaloid or sepaloid, elliptic, cucullate, navicular, apex rounded;

midveins usually unbranched, rarely branched;

stamens 8.

enclosed in or exserted from perianth, black, ovate to ovate-oblong, 1.8–2.1 mm, faces subequal, shiny, smooth.

enclosed in or slightly exserted from perianth, black, elliptic to oblong, 2.3–4 mm, faces subequal, shiny, smooth or minutely striate-tubercled near edges and apex.

= 20.