We present the first finding of Anthyllis cytisoides L. in Italy. This western Mediterranean woody species was found close to the coastline on the southwest side of Mt. Argentario in southern Tuscany, on limestone rocks within a xerophytic garrigue community of the Erico multiflorae-Rosmarinetum officinali association. A description of the plant is given along with an original iconography and photos taken in the field. The reasons for considering this population of natural origin are briefly discussed, along with the possible causes of its wide disjunction from the rest of the species range.