EPPO Global Database

Hydrocotyle ranunculoides(HYDRA)

Distribution details in France

Situation
Current pest situation evaluated by EPPO on the basis of information dated 2011: Present, few occurrences
Pest status declared by NPPO: Present, few occurrences (2011-06)
Comments
EPPO Reporting Service (2004/042) : Alert listing. Unofficial reports

2005: In France, H. ranunculoides has been reported in pools in the Essonne valley south of Paris and in the Dombes area (near Lyon); invaded pools are completely covered by the end of the season, but there is currently no spread to other water bodies.

EPPO Reporting Service (2013/114) : Hydrocotyle ranunculoides (Apiaceae, EPPO A2 List) was previously reported in France in the Ain and in the Essonne departments. It has been found for the first time in the region Aquitaine on the Cousturet river in the municipality of Saubion, in the Landes Department. After its discovery in 2012, a manual removal of the plant was planned. Twelve interventions were organized, representing 36 working days, to remove in total 20.5 m3 of the plant.
The species has also been found in the Saubion municipality in the locality ‘Lagrollet’, as well as in the municipality of Tosse. Filters have also been placed to contain the species and to prevent its spread to the water catchment. The species has been observed on the Baudigau river, at the junction with the Marais d’Orx (protected wetland area of the Landes department). H. ranunculoides has also been recorded in the neighbouring deparment of Gironde.
References
* NPPO of France (2011-06).

* Conservatoire Botanique National Sud-Atlantique (2012) Document d’alerte. Plante exotique envahissante émergente. Hydrocotyle ranunculoides. 1 p.

* Dupain M (2013) L'Hydrocotyle fausse-renoncule (Hydrocotyle ranunculoides L. f.) en Gironde. Bulletin de la Société Linnéenne de Bordeaux, 148, nouvelle série n° 41(1), 53-57

* Personal communication with Alain Dutartre, Institut national de recherche en sciences et technologies pour l’environnement et l’agriculture (Irstea), 2013

* Personal communication with François Arrué, Syndicat Mixte de Rivière Bourret-Boudigau, 2013
Situation in neighbouring countries
Country State Status
Belgium Present, restricted distribution view...
Germany Present, no details view...
Italy Sardegna Present, no details view...
Italy Present, restricted distribution view...
Spain Absent, unreliable record view...