Nuevos taxones vegetales alóctonos de jardinería en el área continental de NE de Espa a: comportamiento e historia

This paper provides information about two topics rarely found in literature on invasions: 1-the record of succulent species naturalised within a continental-type climate area (Teruel, NE Spain), 2-the distinction between taxonomical varieties of invasive taxa. Besides, historical information on introduction, area of origin and taxonomical consideration is provided for each taxa. A. americana var. marginata Trel, Agave ingens Berger, Malephora purpureo-crocea (Haw.) Schwantes and Sedum dendroideum DC. subsp. praealtum (A. DC.) R. T. Clausen are recorded for the first time in the area.