Egeria densa found in the Pyrenees (ES)
In 2012, Egeria densa (Hydrocharitaceae, EPPO List of Invasive Alien Plants) was recorded in Solsonès in the province of Lleida (Catalunya), Spain. This is the first time that E. densa is found in the Pyrenees. However, this is the second record for Catalunya, as E. densa was found in the 1990s in Breda, in the county of La Selva. In Spain, the species has also been recorded in Andalucía, Communidad Valenciana (found in Gandía in the 1990s), Galicia, País Vasco, and Madrid, while in France the species is recorded in the departments of Aquitaine, Haute-Garonne and Tarn-et-Garonne. In the Pyrenees, the species has been found at an altitude of 1310;m covering 12 m² of an artificial lake. The discovery in the same area of a naturalized population of the newt (salamander) Ommatotriton ophryticus suggests that E.;densa could have been introduced with these amphibians.
Aymerich P (2012) Una població de l’hidròfit invasor Egeria densa Planch. (Hydrocharitaceae) a l’àmbit pirinenc. Orsis 26, 51-55.