New records of alien vascular plants in Catalonia and the Valencian Country

[CA] Presentem cites de 34 plantes aŀlòctones trobades a Catalunya i al País Valencià fruit principalment del treball de camp dut a terme en aquests territoris. Com a novetats, en citem dues per a Europa –Agave albomarginata i Euryops chrysanthemoides × E. pectinatus–, cinc per a la península Ibèrica –Opuntia chlorotica, Ptelea trifoliata, Rosa multiflora, Siphonostylis unguicularis i Solandra maxima–, vuit per a Catalunya –Aspidistra elatior, Echinopsis oxygona, Mammillaria elongata, Morus kagayamae, Paraserianthes lophantha, Proboscidea louisianica, Tara spinosa i Vachellia caven–, i vuit per a les diferents províncies catalanes: per a Barcelona, Malephora purpureocrocea, Oenothera lindheimeri, Solanum pseudocapsicum, Tecomaria capensis i Tipuana tipu; per a Girona, Bouteloua dactyloides; per a Lleida, Erythrostemon gilliesii; i, per a Tarragona, Agave lophantha. Tot i no ésser novetats, també aportem noves observacions de plantes poc citades. La majoria de les espècies són presents al territori de forma ocasional (tot i que en alguns casos estan plenament naturalitzades), i en general hi són com a conseqüència d’activitats principalment de jardineria.[EN] We provide here records of 34 non-native plants found in Catalonia and the Valencian Country, mainly as a result of recent field research. The following taxa are cited as new at different scales: two in Europe –Agave albomarginata and Euryops chrysanthemoides × E. pectinatus–, five in the Iberian Peninsula –Opuntia chlorotica, Ptelea trifoliata, Rosa multiflora, Siphonostylis unguicularis and Solandra maxima–, eight in Catalonia –Aspidistra elatior, Echinopsis oxygona, Mammillaria elongata, Morus kagayamae, Paraserianthes lophantha, Proboscidea louisianica, Tara spinosa and Vachellia caven–, five in the province of Barcelona Malephora purpureocrocea, Oenothera lindheimeri, Solanum pseudocapsicum, Tecomaria capensis and Tipuana tipu; and one in the provinces of Girona, Lleida and Tarragona –Bouteloua dactyloides, Erythrostemon gilliesii, and Agave lophantha, respectively. Data of some other plants not new for these regions but scarcely cited are also provided. Although most of the species are casual, for a few cases they are naturalized, mostly being originally introduced for horticultural purposes.Peer reviewe