Global invasive species database

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Common name
agsom (Chamorro), matakonikoni (Fijian), vinagrillo (Spanish), trevo-azedo (English), chulco (Spanish), hierba de la perdiz (Spanish), yellow oxalis (English), gougus (Yapese), creeping woods (English), kanapa (Bontok), creeping oxalis (English), malabalug-dagis (Pampangan), omis (Palauan), sheep sorrel (English), apsom (Chamorro), creeping yellow oxalis (English), rongomi (Fijian), 'ihi maka 'ula (Hawaiian), 'ihi makole (Hawaiian), petit trèfle (French), pikhik (Ibatan), salamagi (Bontok), creeping wood sorrel (English), creeping lady's sorrel (English), wood sorrel (English), acederilla (Spanish), marasiksik (Ilocano), kihikihi (Tongan), taingang-daga (Tagalog), kihikihi (Niuean), koki'i kura (Cook Islands), pied de pigeon (French), três-corações (English), daraisig (Bicolano), procumbent yellow sorrel (English), oxalis (English), acedera (Spanish), totowiwi (Fijian), clover sorrel (English), kavakava (Cook Islands), yellow wood sorrel (English), katabami (Japanese), 'i'i (Samoan), koki'i (Cook Islands), patoa 'ava'ava (Tahitian), trèbol (Spanish), sour grass (English), agrito (Spanish), oseille filante (French), azedinha (English), trèfle jaune (French), a'aa'a (Samoan), 'ihi 'ai (Hawaiian), 'ihi 'awa (Hawaiian), 'ii (Samoan)
Acetosella corniculata , (L.) Kuntze
Oxalis corniculata , var. atropurpurea Planch.
Oxalis corniculata , var. langloisii (Small) Wieg.
Oxalis corniculata , var. lupulina (R. Knuth) Zucc.
Oxalis corniculata , var. macrophylla Arsene ex R. Knuth
Oxalis corniculata , var. minor Laing
Oxalis corniculata , var. reptans Laing
Oxalis corniculata , var. villosa (Bieb.) Hohen.
Oxalis corniculata , var. viscidula Wieg.
Oxalis pusilla , Salisb.
Oxalis langloisii , (Small) Fedde
Oxalis repens , Thunb.
Oxalis villosa , Bieb.
Xanthoxalis corniculata , (L.) Small
Xanthoxalis corniculata , var. atropurpurea (Planch.) Moldenke
Xanthoxalis langloisii , Small
Xanthoxalis repens , (Thunb.) Moldenke
Similar species
Oxalis corniculata is a cosmopolitan herb that is found worldwide. Spread of this species is due to high production of fertile seeds and its presence on all continents and many islands indicates that seeds are probably carried by birds. O. corniculata is thought to be invasive in many areas: Australasia-Pacific (such as Australia, Cook Islands, Fiji, Hawaii, French Polynesia, Palau, U.S. Minor Outlying Islands), Asia (such as Cambodia, China, Indonesia, Japan, South Korea), Central America (Cayman Islands) and North America (Canada).
Species Description
A caespitose or creeping herb, Oxalis corniculata has stems growing upto 50 cm in length. It has fine hair (pilose) on the stems, petioles and leaflet blades. The stipules of this herb are usually present but inconspicuous, where it grows to 3 mm long. The petioles are 1 - 6 cm long; the leaflets subsessile, subequal and blades obcordate, 4- 20 mm long and broad. Inflorescences, 1-6 are flowered, are usually 2 - 7 cm long. The petals are yellow and are somewhat larger than the sepals (PIER 2007).
Subordinate taxa of O. corniculata include O. corniculata corniculata and O. corniculata var. atropurpurea. (ITIS 2009; USDA ARS 2009).
Habitat Description
Oxalis corniculata, being cosmopolitan in its distribution and having high production in fertile seed, can be found at home in gardens, lawns, arable land and pastures. In Hawaii, it occurs particularly in the open, disturbed sites in coastal and subalpine habitats at elevations of 0 - 2300 m above sea level. In Fiji, on the otherhand, it is a common plant along roads and trails at elevations from near sea level to about 750 metres. Regardless of area, it has been noticed as an invasive and weedy plant.

Principal source:

Compiler: IUCN SSC Invasive Species Specialist Group (ISSG) with support from the Overseas Territories Environmental Programme (OTEP) project XOT603, a joint project with the Cayman Islands Government - Department of Environment


Publication date: 2010-06-08

Recommended citation: Global Invasive Species Database (2021) Species profile: Oxalis corniculata. Downloaded from on 28-11-2021.

Countries (or multi-country features) with distribution records for Oxalis corniculata
Informations on Oxalis corniculata has been recorded for the following locations. Click on the name for additional informations.
Lorem Ipsum
Location Status Invasiveness Occurrence Source
Details of Oxalis corniculata in information
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Red List assessed species 0:
Management information
15 references found for Oxalis corniculata

Management information
Bermuda Natural History Museum, undated. Bermuda species database Bermuda Natural History Museum, PO Box FL 145, Flatts, FL BX, Bermuda.
IUCN/SSC Invasive Species Specialist Group (ISSG)., 2010. A Compilation of Information Sources for Conservation Managers.
Summary: This compilation of information sources can be sorted on keywords for example: Baits & Lures, Non Target Species, Eradication, Monitoring, Risk Assessment, Weeds, Herbicides etc. This compilation is at present in Excel format, this will be web-enabled as a searchable database shortly. This version of the database has been developed by the IUCN SSC ISSG as part of an Overseas Territories Environmental Programme funded project XOT603 in partnership with the Cayman Islands Government - Department of Environment. The compilation is a work under progress, the ISSG will manage, maintain and enhance the database with current and newly published information, reports, journal articles etc.
General information
Chen Ming-lin; Liu Deng-yi; Li Shan-shan, 2007. Observation of micromorphological characters of five species in Oxalis. Journal of Plant Resources & Environment. 16(3). AUG 2007. 7-18.
de Abreu, Maria Carolina; de Carvalho, Reginaldo; de Sales, Margareth Ferreira, 2008. Oxalis L. (Oxalidaceae) in Pernambuco State, Brazil. Acta Botanica Brasilica. 22(2). APR-JUN 2008. 399-416.
Dreyer, L. L.; Esler, K. J.; Zietsman, J., 2006. Flowering phenology of South African Oxalis - possible indicator of climate change? South African Journal of Botany. 72(1). FEB 2006. 150-156.
Grostad, Trond; Halvorsen, Roger, 2006. Yellow-flowering Oxalis species in Norway. Blyttia. 64(3). 2006. 191-197.
ITIS (Integrated Taxonomic Information System), 2009. Online Database Oxalis corniculata L.
Summary: An online database that provides taxnomic information as well as common names and geographical ranges. Available from : [Accessed 1 July 2009]
M. Walker pers comm. 2004.
Summary: Mary Walker is currently completing a book on the flora of Anguilla
PIER (Pacific Island Ecosystems at Risk), 2007. Oxalis corniculata L.
Summary: Available from: [ Acessed 1 July 2009]
Proctor G.R. 1996. Additions and corrections to Flora of the Cayman Islands . Kew Bulletin 51: 483-507
Ryan P.G., Glass J.P. 2001. Inaccessible Island Nature Reserve Management Plan. Government of Tristan da Cunha, Edinvurgh, Tristan da Cunha.
Small, John K., 1896. A Neglected Species of Oxalis and Its Relatives. Bulletin of the Torrey Botanical Club, Vol. 23, No. 7 (Jul. 20, 1896), pp. 265-269
Sykes, W. R., 2009. The Oxalis corniculata group. New Zealand Journal of Botany. 47(2). JUN 2009. 107-113.
Witting, Ruediger; Wittig, Monika, 2009. Plant communities on trampled sites in villages of Nordrhein-Westfalen. Tuexenia.(29). 2009. 215-235.
The following 0 contacts offer information an advice on Oxalis corniculata
Oxalis corniculata
agsom, matakonikoni, vinagrillo, trevo-azedo , chulco, hierba de la perdiz, yellow oxalis, gougus, creeping woods, kanapa, creeping oxalis, malabalug-dagis, omis, sheep sorrel, apsom, creeping yellow oxalis, rongomi, 'ihi maka 'ula, 'ihi makole, petit trèfle, pikhik, salamagi, creeping wood sorrel, creeping lady's sorrel, wood sorrel, acederilla, marasiksik, kihikihi, taingang-daga, kihikihi, koki'i kura, pied de pigeon, três-corações, daraisig, procumbent yellow sorrel, oxalis, acedera, totowiwi, clover sorrel, kavakava, yellow wood sorrel, katabami, 'i'i, koki'i, patoa 'ava'ava, trèbol, sour grass, agrito, oseille filante, azedinha, trèfle jaune, a'aa'a, 'ihi 'ai, 'ihi 'awa, 'ii
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Recommended citation
(2021). Oxalis corniculata. IUCN Environmental Impact Classification for Alien Taxa (EICAT).