Heterotheca subaxilaris (Compositae), nuevo xenófito para la flora ibérica

Heterotheca subaxillaris (Compositae), a new xenophyte for the iberian flora. A first reference on the presence of Heterotheca subaxillaris (Lam.) Britton & Rusby (Compositae), native of North America, in the iberian flora is provided. This species has been located at the CV-10 highway, in la Pobla Tornesa, Castellón province (Spain).