Flora of North America species comparison

green or slightly suffused with maroon at base; flowering stems 30–80 cm, usually longer than leaves at maturity, 0.8–1.1 mm thick, glabrous but finely scabrous on angles within inflorescence.

10–83 cm × 0.8–1.3 mm, papillose at mid height.

basal sheaths 2–3, green or tinged with maroon, bladeless, very short or absent, glabrous;

others green on back, white-hyaline on front;

blades flat, 2–5 mm wide, glabrous.

ligule of distal leaf (2.1–)2.6–6.8 mm;

blades 1.4–3.8 mm wide, widest blade 2.3–3.8 mm wide.

peduncles of lateral spikes slender, to 4 cm, mostly shorter and usually shorter than spikes, glabrous;

peduncle of terminal spike less than 10 mm, minutely scabrous;

proximal bracts equaling or exceeding inflorescences;

sheaths less than 3 mm;

blades 2–3 mm wide.

27–68 mm, proximalmost 2 spikes overalapping or separate;

proximal internode 7.3–28 mm;

proximal bract 11–61 mm;

spikes (4–)5–6(–7), usually gynecandrous, sometimes pistillate or staminate;

proximal spike usually with 1–3 staminate and 11–22 pistillate flowers, longest per plant with 12–22 pistillate flowers, 9.7–18 × 3.7–6.6 mm, longest per plant 12–18 mm;

terminal spike usually with 1–3 staminate and 14–21 pistillate flowers, sessile or on peduncle to 1.8 mm, 9.6–16 × 3.4–6.2 mm.

green to golden green at maturity, strongly 2-ribbed but otherwise veinless or nearly so, loosely enveloping achene, lance-ovoid, 2.5–4 × 1–1.5 mm, membranous, base with short stipe, apex tapering to flattened, often bent beak, glabrous;

beak 1–1.5 mm, with minute hyaline teeth.

erect to appressed-erect, green to brown, veinless or weakly 1–3(–4)-veined abaxially, veinless adaxially, narrowly lanceolate in outline, 3.7–5.3 × 1.1–1.3(–1.4) mm, 3.2–3.9(–4.2) times as long as wide, apex gradually tapering;

beak 1.5–2.2 mm, 39–49% of total perigynium, margins denticulate for distal 49–60% of length of perigynium, apex entire or bidentulate, teeth 0–0.2(–0.4) mm, 0–8% of length of perigynium.

substipitate, 1.3–2 × 1–1.2 mm.

1.6–2.2 × 1.1–1.3 mm, 1.5–1.8 times as long as wide.

spikes 2–4, 1 per node, each overlapping 1 above, uncrowded, nodding or drooping at maturity, pistillate with 25–50 perigynia, narrowly cylindric but broader and more densely flowered at distal end (flowers 1 mm apart) than proximal end (flowers 3.5 mm apart), 15–60 × 3.5–5.5 mm.

spike staminate or gynecandrous with a few pistillate flowers distally, 25–40 × 2.5–4 mm.

scales white-hyaline with broad green midrib, ovate-oblong, shorter than mature perigynia, apex cuspidate or with green awn about as long as body of scales, scabrous at tip, otherwise glabrous.

scales whitish to castaneous, with green midrib, 2.9–4.4 mm, body 2.9–3.8 × 1.4–1.8 mm, apex acuminate to short-awned, awn to 1.1 mm.

scales with whitish to castaneous margins, 3.1–4.3 × 1–1.5 mm, apex acute to short-awned.

1.3–1.8 mm.

1.8–2.5 mm.

= 60.