Flora of North America species comparison

to 70, more than 0.2 mm diam..

round or flattened in cross section.

often present at culm base.

to 2.2 cm, 1/2–3/4 height of plant.

sheaths open;

blade flat, channeled, ensiform or terete, sometimes septate, margins involute.

terminal solitary flowers;

bracts subtending inflorescence 1, widely truncate, enwrapping culm, inconspicuous, 0.25–0.9 mm, membranous, apex widely truncate, completely sheathing culm..

terminal or pseudoaxillary, monochasia or dichasia, usually with monochasial branches, cymes or 1–many heads in racemes or panicles;

bracteoles 2 or absent.

3-merous, : tepals erect to recurved at maturity, greenish or tinged red, 2–4 × 0.6–0.9 mm;

outer and inner series nearly equal, apex acutish;

stamens usually 3, filaments 0.9–1.6 mm, anthers 0.3–0.4 mm, 1/3 length of filaments;

style 0.1–0.3 mm, stigma 0.4–1.3 mm.

tepals (4–)6 in 2 whorls;

stamens (2–)3–6.

reddish to maroon, 3-locular, ovoid to ellipsoid, 1.8–3.2 × 1–2.5 mm, nearly equal or shorter than the tepals.

1-locular or 3-locular, septicidal.

ovoid, 0.3–0.4 mm.

many, ellipsoid to ovoid, sometimes tailed.

= 16.