Chorological notes on the non-native flora of the province of Tarragona (Catalonia, Spain)

Recent field work in the province of Tarragona (NE Spain, Catalonia) yielded several new records of non-native vascular plants.
Cenchrus orientalis, Manihot grahamii, Melica chilensis and Panicum capillare subsp. hillmanii are probably reported for the first time
from Spain, while Aloe ferox, Canna ×generalis, Cenchrus setaceus, Convolvulus farinosus, Ficus rubiginosa, Jarava plumosa, Koelreuteria
paniculata, Lycianthes rantonnetii, Nassella tenuissima, Paraserianthes lophantha, Plumbago auriculata, Podranea ricasoliana,
Proboscidea louisianica, Sedum palmeri, Solanum bonariense, Tipuana tipu, Tradescantia pallida and Vitis ×ruggerii are reported for the
first time from the province of Tarragona. Several of these are potential or genuine invasive species and/or agricultural weeds. Miscellaneous
additional records are presented for some further alien taxa with only few earlier records in the study area.