|Despite its name and appearance, this plant is in the genus Carex, not Cyperus|
Carex pseudocyperus is a species of flowering plant in the sedge family known by the common name cyperus sedge or hop sedge. It grows in marshes, swamps, and the margins of ponds, rivers and canals. The stems can be up to 90 centimetres (35 in) with one male spike and 3–-5 pendulous female spikes, and bright yellow-green leaves to 1.2 metres (3 ft 11 in).
- "BSBI List 2007". Botanical Society of Britain and Ireland (Excel Spreadsheet). 2007. Archived from the original (xls) on 2015-01-25. Retrieved 2014-10-17.
- Fitter, Richard; Fitter, Alastair; Farrer, Ann (1984). Collins Guide to the Grasses, Sedges, Rushes and Ferns of Britain and Northern Europe. London. p. 142. ISBN 0 00 219136 9.
- Stace, Clive A. (2010). New flora of the British isles (Third ed.). Cambridge, U.K.: Cambridge University Press. p. 965. ISBN 9780521707725.
- "Online Atlas of the British and Irish Flora".
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