EPPO Global Database

Cyperus iria(CYPIR)

Code created in: 1996-10-28

Basic information
  • EPPO Code: CYPIR
  • Preferred name: Cyperus iria
  • Authority: Linnaeus


Western Asia, Central Asia, Indian subcontinent, China, Japan, Korea, southeast Asia, most of Africa (except Mediterranean and south), Madagascar, New Guinea, Australia. A major weed in rice crops. Introduced in USA (southern), Mexico, Central America, Caribbean, most of South America

WSSA list of weeds in North America

Other scientific names
Name Authority
Cyperus panicoides Lamarck
Cyperus parviflorus Nees
Cyperus resinosus Hochstetter
Cyperus santonici Rottbøll

Common names
Name Language
ricefield flatsedge English
rice flatsedge English (US)
corocillo Spanish
iria Spanish
tiririca-do-brejo Portuguese (BR)
kogome-gayatsuri Japanese
コゴメガヤツリ Japanese
cыть ирия Russian
suì mǐ suō cǎo Chinese
碎米莎草 Chinese