Carex flaccosperma Dewey

Plants densely cespitose; rhizome internodes 1.2–2.8 mm thick. Culms yellow-brown at base, 10–60(–75) cm. Leaves: sheaths glabrous; blades glaucous, widest blades 6.3–14.7 mm wide, smooth abaxially or sparsely antrorsely scaberulous on main veins. Inflorescences 0.40–1 of culm height; peduncles of lateral spikes smooth; peduncles of terminal spikes 0.7–20(–51) mm, barely to much exceeding lateral spikes; proximal bract sheath loose, abaxially glabrous, sheath front apex truncate; ligules (3–)4.7–9 mm; distal bract slightly shorter than to much exceeding terminal spike. Spikes 4–6, distal 2–4 overlapping; lateral spikes pistillate, with 12–39 perigynia, 11–41 × (5–)5.7–8(–9.6) mm, ratio of spike length (in mm) to flower number = (0.86–)1–1.3(–1.6); terminal spikes 6–34 × 1–3.2 mm. Pistillate scales 1.9–2.8(–3.1) × (1.5–)1.7–2.4 mm, margins whitish, entire, apex awnless or with awn to 0.6(–1.6) mm. Staminate scales 3.8–5.3 ´ 1–1.8 mm. Anthers 1.6–2 mm. Perigynia spirally imbricate, 44–57-veined, unwrinkled, oblong-ovoid, (4–)4.2–5.5(–6) × (1.5–)1.7–2.4 mm, (2–)2.2–2.8(–3.1) times as long as wide, obtusely triangular in cross section, dull, base very gradually tapered, apex gradually tapered; beak absent or straight, 0–0.3 mm. Achenes obovoid, 2.5–3.4 × (1.3–)1.4–1.6(–1.7) mm, 0.37–0.5 times as long as perigynia, loosely enveloped by perigynia; stipe straight, (0.2–)0.3–0.5(–0.6) mm; beak straight or bent less than 30°, (0.1–)0.2–0.4(–0.5) mm.

Can be grown by cuttings or seedlings.