HOME      •      SEARCH      •      EMAIL    •     ABOUT

Family Cyperaceae
Cyperus iria Linn.


Scientifric names  Common names
Chlorocyperus iria (L.) Rikli Alinang (Tag., Bik.)
Cyperus chrysomelinus Link Okokiang (Bon.) 
Cyperus diaphaniria Steud. Paiung-paiung (Bik.) 
Cyperus iria Linn. Sud-sud (Bik.) 
Cyperus iria var. typicus Domin Taga-taga (Bik.) 
Cyperus iria f. chrysomelinus (Link) Kük Grasshopper's cyperus ((Engl.)
Cyperus iria f. diaphaniria (Steud.) Miq. Ricefield flatsedge ((Engl.)
Cyperus iria var. flavescens Benth. Rice flat sedge (Engl.)
Cyperus iria f. flavescens (Benth.) Domin. Umbrella sedge ((Engl.)
Cyperus iria f. multiflora Domin.  
Cyperus iria var. paniciformis (Franch. & Sav.) C.B.Clarke  
Cyperus iria var. santonici (Rottb.) Fernald & Griscom  
Cyperus microlepis Baker  
Cyperus nangtciangensis Pamp.  
Cyperus paniciformis Franch. & Sav.  
Cyperus panicoides Lam.  
Cyperus resinosus Hochst. ex Steud.  
Cyperus santonici Rottb.  
Cyperus iria L. is an accepted name. KEW: Plants of the World Online

Other vernacular names
BANGLADESH: Barachucha.
BRAZIL: Tiririca-do-brejo.
CAMBODIA: Kak kangkep.
INDIA: Morphula.
INDONESIA: Babawangan, Dekeng wangin, Nyur-nyuran, Rumput jekeng kungit, Rumput silupak.
JAPANESE: Ko gome gayatsuri.
KOREA: Chambang-donsani.
MALAYSIA: Rumput menderong
NEPAL: Chow, Guchen, Mothey, Ochumani
PORTUGUESE: Junca, Junquinho, Tiririca, Tres-quinas.
THAI: Kok huadaeng, Yaa kok saai, Yaa kok lek, Yaa rangkaa khaao.
VIETNAMESE: C[os]i g[aj]o, Coi gao.

Gen info
- Cyperus is a large genus of about 700 species of sedges, distributed throughout all continents in both tropical and temperate regions.
- Cyperus iria is a smooth, tufted sedge found worldwide. It often grows in rice paddies, where it is considered a weed.

Alinang is a tufted, glabrous annual herb, occasionally perennial, growing to a height of 10 to 70 centimeters. Roots are fibrous, 15 to 75. Stems are sharply 3-angled, tufted, smooth, 5 to 80 centimeters high. Leaves are short and long, 2 to 5 millimeters wide; sheath, reddish or purplish brown, enveloping the stem at the base. Umbels are 3 to 30 centimeters in diameter, the rays long and short, few to many. Spikes are loosely spicate. Spikelets are numerous, yellow or brown, 3 to 10 millimeters long. Glumes are 6 to 20, obovate, hardly imbricate, about 1.2 millimeters long, 3- to 5-angled, oblong ovoid.

- Native to the Philippines.
- A very common paddy weed in open, wet places.

- A troublesome weed in ricefields.
- Also found in China, Japan and Korea. In South East Asia: Bangladesh, Cambodia, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Pakistan, Sri Lanka, Thailand and Vietnam. Also in Australia, Fiji, Swaziland, and West Africa. (3)

- Study of aqueous-ethanol extract of C. iria revealed high phenolic and flavonoid contents, 82.79 ± 0.003 mg/g GAE and 13.61 ± 0.002 mg/g QE, respectively. HPLC confirmed the presence of myricetin, quercetin, kaempferol and ferullic acid. (see study below) (9)

- Tonic, stimulant, stomachic and astringent.
- Study has shown larvicidal, mosquitocidal, antioxidant, antibacterial, antifungal, antidiabetic properties.

Parts utilized
Tubers, leaves.

- Decoction of ground tubers used for fevers.

- Among the Mundas of Chota Nagpur, tuber is ground together with Cyperus rotundus and taken for fever.
- In India, plant is considered tonic, stimulant, stomachic and astringent.
Used for amenorrhea.
- In Vietnam, whole plant used for rheumatism, to regulate menstruation. Rhizomes used as diuretic. (7)
- Crafts: Used for weaving mats.

- Fodder: In Vietnam, sometimes used as fodder. (7)

Larvicidal / Mosquito Control / Leaves: Study of leaves of six Cyperus species of varying ages were tested on the larvae of yellow fever mosquito. Only Cyperus iria was found to have significant levels of JH III (juvenile hormone III) and suggests a potential for a safe, inexpensive and readily available mosquito larvicidal for the yellow fever mosquito Aedes aegypti. (1)
Antioxidant: Study of wetland medicinal plants for antioxidant capacities in the TEAC assay ranged from 7.53 µM to 1753.41 µM Trolox/mg water extract and 5.69 µM to 2074.35 µM Trolox/mg for methanol extracts. C. iria water extract showed 762.94 ±33.80 µM Trolox/mg while the methanol extract showed 769.41 ±53.57 µM Trolox/mg. Study also reports on reducing capacity value, DPPH assay, and total polyphenol contents. (6)
Terpenoids / Antifungal / Leaves: Ricefield flatsedge is a troublesome weed in rice production. Study identified terpenoids as dominant compounds from organic extracts of C. iria leaves, and evaluated the role of terpenoid production in plant development and resistance to abiotic and biotic stresses. During vegetative growth, total concentration of sesquiterpenoids increased and reached maximum 70 days after germination, then decreased until the emergence of inflorescence. Monoterpenoids were detected from leaves only 90 days after germination. Infestation by beet armyworm (Spodoptera exigua) promoted the emission of total sesquiterpenoids and induced production of more monoterpenoids and sesquiterpenoids. Authors discussed the implications of findings on biosynthetic pathways of sesquiterpenoid production and their potential as fungicides. (8)
Antidiabetic / Anti-Inflammatory / Whole Plant: Study evaluated aqueous-ethanol extract of air-dried whole plant of Cyperus iria for invitro and invivo antihyperglycemmic activity and effects on oxidative stress, and inflammatory cytokines in rats. Extract showed excellent potential for both antioxidant (IC50 3.22 µg/mL) and alpha-amylase (IC50 32.29 µg/mL) inhibitory assays. Streptozotocin induced hyperglycemia declined with improvement in inflammatory and oxidative stress markers along with biochemical parameters in a dose-dependent manner.  The h
ypoglycemic potential may be attributed to the presence of phenolics and flavonoids. (see constituents above) (9)
Antimicrobial / Aerial and Underground Parts: In a study for antimicrobial activity, the chloroform phase of C. iria showed best results at concentration of only 31.2 µg/mL against pathogens Candida albicans and Staphylococcus aureus. (10)


Updated January 2023 / January 2020 / September 2016

Photo © Godofredo Stuart / StuartXchange
OTHER IMAGE SOURCE: Line Drawing / Public Domain / Cyperus iria / USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 301. / USDA
OTHER IMAGE SOURCE: Photograph: Cyperus iria / Cyperus iria /  @ Wiktrop / click on image to go to source page / Wiktrop

Additional Sources and Suggested Readings
The lethal effects of Cyperus iria on Aedes aegypti
/ A M Schwartz, S M Paskewitz, A P Orth, M J Tesch, Y C Toong, W G Goodman / Journal of the American Mosquito Control Association. 01/04/1998; 14(1):78-82.

Cyperus iria Linn / The Plant List

Cyperus iria / The Knowledge Bank
Cypreus iria / Common names / Invasive Species Compendium
In vitro antioxidant properties and total phenolic contents of wetland medicinal plants in Taiwan / Yu-Ling HO, Shyh-Shyun HUANG, Jeng-Shyan DENG, Yaw-Huei LIN, Yuan-Shiun CHANG, and Guan-Jhong HUANG* / Botanical Studies (2012) 53: pp 55-66
Cyperus iria / PROSEA
Terpenoids from Weedy Ricefield Flatsedge (Cyperus iria L.) Are Developmentally Regulated and Stress-Induced, and have Antifungal Properties / Yifan Jiang, Bonnie H Ownley, Feng Chen / Molecules, 2018; 23(12) / https://doi.org/10.3390/molecules23123149
Cyperus iria Aqueous-Ethanol Extract Ameliorated Hyperglycemia, Oxidative Stress and Regulated Inflammatory Cytokines in Streptozotocin Induced Diabetic Rats / Myeda Saeed, Ali Sharif, Saeed Ul Hassan, Bushra Akhtar, Faqir Muhammad, Maryam Malik / DOI: 10.21203/rs.3.rs-216684/v1
Phytochemical profile, evaluation of antimicrobial and antioxidant activity in vitro of the hydroalcoholic extract of two species of the genus Cyperus (Cyperaceae) / Jose Jailson Lima Bezerra, Ticiano Gomes do Nascimento, Nathaly Esperidiao de Melo et al /Brazilian Journal of Pharmaceutical Sciences, 2022; 58: e20205 / DOI:101590/s2175-97902022e20205


DOI: It is not uncommon for links on studies/sources to change. Copying and pasting the information on the search window or using the DOI (if available) will often redirect to the new link page. (Citing and Using a (DOI) Digital Object Identifier)

Potential Herbal Medicines and Drug Interactions
Story Behind the Medicinal Plant Compilation
Latest Updated Tagalog and English Lists of Philippine Medicinal Plants
List of Plants with Known Toxicity
                                                            List of Understudied Philippine Medicinal Plants
Abuse and Plagiarism of the Compilation on Philippine Medicinal Plants
Under the Guise of Fair Use

Bahay Kubo

The Medicinal Plant Song
Alternative Medicine Dictionary
Un-Abbreviated Dialect Sources of Common and Local Names
Plant Names
List of Philippine Medicinal Plants with Chinese Names
HOME      •      SEARCH      •      EMAIL