Cyperus esculentus f. angustispicatus (Britton) Fernald
Cyperus esculentus subsp. aureus K.Richt.
Cyperus esculentus var. cyclolepis Boeckeler ex Kük.
Cyperus esculentus f. evolutus C.B.Clarke
Cyperus esculentus var. heermannii (Buckley) Britton
Cyperus esculentus var. helodes (Schrad. ex Nees) C.B.Clarke
Cyperus esculentus var. leptostachyus Boeckeler
Cyperus esculentus var. lutescens (Torr. & Hook.) Kük. ex Osten
Cyperus esculentus var. lutescens (Torr. & Hook.) Kük.
Cyperus esculentus var. macrostachyus Boeckeler
Cyperus esculentus f. macrostachyus (Boeckeler) Fernald
Cyperus esculentus var. phymatodes (Muhl.) Kük.
Cyperus esculentus f. princeps C.B.Clarke
Cyperus esculentus var. sativus Boeckeler
Cyperus esculentus var. sprucei C.B.Clarke
Cyperus fresenii Steud.
Cyperus fulvescens Liebm.
Cyperus gracilescens Schult.
Cyperus gracilis Link
Cyperus heermannii Buckley
Cyperus helodes Schrad. ex Nees
Cyperus hydra Kunth
Cyperus lutescens Torr. & Hook.
Cyperus melanorhizus Delile
Cyperus nervosus Bertol.
Cyperus officinalis T.Nees
Cyperus pallidus Savi
Cyperus phymatodes Muhl.
Cyperus phymatodes var. heermannii (Buckley) S.Watson
Cyperus repens Elliott
Cyperus ruficomus Buckley
Cyperus scirpoides R.Br.
Cyperus sieberianus Link
Cyperus tenoreanus Schult.
Cyperus tenorei C.Presl
Cyperus tenorianus Roem. & Schult.
Cyperus tuberosus Pursh
Cyperus variabilis Salzm. ex Steud.
Pterocyperus esculentus (L.) Opiz
Pycreus esculentus (L.) Hayek
Cyperus esculentus (also called chufa,[3]tiger nut,[4]atadwe,[5]yellow nutsedge,[6]earth almond, and in Chishona, pfende[7]) is a species of plant in the sedge family widespread across much of the world.[8] It is found in most of the Eastern Hemisphere, including Southern Europe, Africa and Madagascar, as well as the Middle East and the Indian subcontinent.[9][10][11]C. esculentus is cultivated for its edible tubers, called earth almonds or tiger nuts (due to the stripes on their tubers and their hard shell), as a snack food and for the preparation of horchata de chufa, a sweet, milk-like beverage.[12][13]
Cyperus esculentus can be found wild, as a weed, or as a crop. It is an invasive species outside its native range, and is readily transported accidentally to become invasive. In many countries, C. esculentus is considered a weed.[12][14] It is often found in wet soils such as rice paddies and peanut farms as well as well-irrigated lawns and golf courses during warm weather.