Cuphea carthagenensis (Jacquin) J.F. Macbride, Lythraceae: a newly naturalised species from eastern Nepal

Cuphea carthagenensis (Jacquin) J.F. Macbride, a native of South America, is recorded for the first time from Mechinagar municipality of south-eastern Nepal. This weed has already been in the neigh-boring north-east region of India since the 1950s and might have recently spread into south-eastern Nepal where it is colonizing riparian habitats. We provide a detailed taxonomic account, as well as the distribution, major habitat, and invasion status of C. carthagenensis.