Figure 3 from: Fenu G, Bernardo L, Calvo R, Cortis P, De Agostini A, Gangale C, Gargano D, Gargano ML, Lussu M, Medagli P, Perrino EV, Sciandrello S, Wagensommer RP, Orsenigo S (2019) Global and Regional IUCN Red List Assessments: 8. Italian Botanist 8: 17-33. https://doi.org/10.3897/italianbotanist.8.47330