IUCN threat status:

Least Concern (LC)


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Plants colonial from long-creeping rhizomes. Culms to 100 cm × (0.8–)1–1.2 mm distally. Leaves: blades flat, tip trigonous, channeled in cross section, to 40 cm × 1.5–6(–8) mm; distal leaf blade much longer than sheath. Inflorescences: blade-bearing involucral bracts 1–3, proximally blade, often sheath black, leaflike, longest 1–12 cm. Spikelets (1–)2–10, in subumbels, patent or pendent, ovoid, 10–20 mm in flower, 20–50 mm in fruit; peduncles 5–60 mm, smooth or scabrous; scales lanceolate or ovate, 5–10 mm, with prominent midrib fading proximal to tip, apex ± acute; proximal scales without lateral ribs. Flowers: perianth bristles 10 or more, white or pale yellow brown, 15–30 mm, smooth; anthers 2–5 mm. Achenes black, oblanceoloid, 2–5 mm.


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© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA

Source: Missouri Botanical Garden

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