Data of alien plants for the east of Iberian Peninsula.
With the observations of the last years in the east of the Iberian Peninsula (specifically in Catalonia, Valencian Country and the Teruel province), records of 41 naturalized or casual alien plants are reported. It is worth noting Annona cherimola and Manihot grahamii that are reported for first time in the Iberian flora; Echinopsis pachanoi and Hydrocotyle verticillata for Catalonia; Solandra maxima for Valencian Country. Opuntia pestifer must be excluded from the Valencian flora, and it is confirmed that the previous data correspond to Opuntia aurantiaca. In addition, new localities of Acacia karroo, Cylindropuntia kleiniae, Euphorbia tirucalli, Leucaena leucocephala, Lophocereus marginatus, Nicandra physalodes, Pelargonium inquinans, Physalis peruviana, Podranea ricasoliana, Sedum pachyphyllum, Senna corymbosa, Tradescantia pallida and Tradescantia sillamontana, interesting and few known species in the eastern Iberian alien flora are provided.