Cyperus niger is a species of sedge known by the common name black flatsedge. This plant is native to the Americas, where it can be found in wet areas from South and Central America to the southwestern United States, from California and Oklahoma south to Argentina.
Cyperus niger is a perennial herb with small, wispy rhizomes. There may be a few long, thin leaves around the base of the plant. The thin stems often grow bunched together and may reach half a meter in height. The inflorescence contains a few to over 20 spikelets, each under a centimeter long, flat, and containing usually fewer than ten flowers. Each flower is covered by an oval-shaped dark brown or greenish bract. The fruit is a discoid achene just over a millimeter long.
- Kew World Checklist of Selected Plant Families
- Flora of North America, Vol. 23 Page 161, Cyperus niger Ruiz & Pavón, Fl. Peruv. 1: 47. 1798.
- Biota of North America Program, 2013 county distribution map
- Govaerts, R. & Simpson, D.A. (2007). World Checklist of Cyperaceae. Sedges: 1-765. The Board of Trustees of the Royal Botanic Gardens, Kew.
- Jepson Manual Treatment
|This Cyperaceae article is a stub. You can help Wikipedia by expanding it.|