Eleocharis quadrangulata

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Square-stem spikerush
Eleocharis quadrangulata NRCS-1.jpg
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Monocots
(unranked): Commelinids
Order: Poales
Family: Cyperaceae
Genus: Eleocharis
Species: E. quadrangulata
Binomial name
Eleocharis quadrangulata
(Michx.) Roem. & Schult.
  • Scirpus quadrangulatus Michx.
  • Limnochloa quadrangulata (Michx.) Nees.
  • Eleocharis quadrangulata var. typica Fernald
  • Eleocharis quadrangulata var. crassior Fernald

Eleocharis quadrangulata is a species of spikesedge known by the common names square-stem spikerush and four-angled spikerush. It is native to eastern and central North America (from Texas and Florida north to Ontario and Massachusetts), with additional populations in California, Oregon, and west-central Mexico (Durango, Jalisco, etc.).[1][2][3][4] It grows in and around freshwater in lakes, ponds, and other bodies of water. It is a rhizomatous perennial herb growing one half to one meter in height. The spongy, compressible stem is a few millimeters wide and sharply four-angled. The inflorescence is a single spikelet 1.5 to 7.5 centimeters long which is made up of several flowers covered in light brown bracts.[5]


  1. ^ a b Kew World Checklist of Selected Plant Families
  2. ^ Flora of North America, Eleocharis quadrangulata (Michaux) Roemer & Schultes in J. J. Roemer et al., Syst. Veg. 2: 155. 1817.
  3. ^ Biota of North America Program, 2013 county distribution map
  4. ^ McVaugh, R. 1993. Cyperaceae. 13: 225–440. In R. McVaugh (ed.) Flora Novo-Galiciana. The University of Michigan, Ann Arbor
  5. ^ Espejo Serna, A. & López-Ferrari, A.R. (1997). Las Monocotiledóneas Mexicanas una Sinopsis Florística 5: 1-98. Consejo Nacional de la Flora de México, México D.F..

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