Flora of North America species comparison

round.

absent.

sheaths closed, without auricles at throat (junction with blade), usually pilose;

blade flat or channeled, never septate, margins with long, soft, multicellular hairs, apex often thickened (callous), veins commonly indistinct.

2–3, not or only barely overlapping;

proximal inflorescence bract equal to barely exceeding inflorescence.

terminal;

flowers inserted individually or in dense clusters (glomerules) variously arranged;

bracts subtending inflorescence (proximal inflorescence bracts) 2, mostly leaflike;

bracts subtending inflorescence branches 1–2, reduced;

bracteoles subtending flowers 2–3.

tepals 6, in 2 whorls;

stamens 6.

pale to brown, shorter than tepals.

1-locular, generally globose;

beak often formed by persistent style base.

1.1–1.5 mm;

caruncle 0.3–0.6 mm.

3, globose to ovoid, base often with tuft of fibrous hairs (vestige of funiculus);

nutritive appendage from outer seed coat (caruncle) often present, white, barely visible to ± equaling seed body.

outer and inner whorl straw-colored to brown, 2.8-3.6 mm, apex pointed.

= 6.

= 24.