New species of subspontaneous non-native vascular plants in Catalonia (Spain).
We provide the first records of three non-native vascular species found as subspontaneous in Catalonia and used in gardening. Two of them, Ruschia uncinata (L.) Schwantes and Myrtillocactus geometrizans (Pfeiff.) Console, are novelties in Europe, while Kalanchoe daigremontiana Raym.-Hamet & H. Perrier is reported firstly for the aforementioned autonomous community. The first data for the province of Girona or Barcelona are provided for other four species. Keywords: gardening; invasive species; non-native plants; vascular flora; Barcelona; Girona; Catalonia; Spain.