Flora of North America species comparison

erect, 1–4 mm diam., smooth.

round or flat.

1–2, straw-colored to pink, apex acute.

basal 1–3, cauline 1–2;

auricles 0.6–1.5 mm, apex rounded, scarious;

blade terete to compressed, 0.2–12 cm × 0.5–2 mm.

mostly basal;

sheath margins fused or overlapping, often with 2 earlike extensions (auricles) at blade junction;

blade flat or round, glabrous or margins hairy.

panicles of 5–80 heads, 5–25 cm, branches ascending;

primary bract erect;

heads 2–6-flowered, ellipsoid to obovoid, 2–5 mm diam.

of headlike clusters or single flowers variously arranged;

bracts subtending inflorescence 1 or more2, mostly leaflike;

bracts subtending inflorescence branches 1–2, reduced;

bracteoles subtending solitary flower 0–2, translucent, reduced.

tepals green to light brown, lanceolate;

outer tepals 1.8–2.5 mm, apex obtuse to nearly acute;

inner tepals 2–2.8 mm, apex obtuse to nearly acute;

stamens 3 or 6, anthers 1/2 filament length.

usually bisexual, radially symmetric;

sepals and petals similar, persistent, green to brown or purplish black;

stamens usually 3 or 6;

anthers persistent, linear;

pistils 1;

ovaries superior, locules 1 or 3, placentas 1 and basal or 3 and axile or parietal;

stigmas generally longer than styles.

capsules, loculicidal.

exserted, chestnut to dark brown, imperfectly 3-locular, obconic, 2.4–3.8 mm, apex acute proximal to beak, valves separating at dehiscence.

ellipsoid to fusiform, 0.8–1.2 mm, tailed;

body covered with whitish translucent veil.

3–many, often with white appendages on 1 or both ends.

= 80.