There are highlighted the contributions of different national and foreign botanists in the last 218 years to the knowledge floral of the territory, at pre- sent approved like Site of Community Importance 'Muela de Cortes y Caroche', based on bibliographical information and bouchers deposited in official national herbaria and private collections. Among the most prominent authors that have cov- ered this territory are mentioned Cavanilles, Willkomm, Porta, Rigo, Pau, Vicioso, Borja, Rivas Goday, Rivas Martínez, Mansanet, Bolòs, Vigo, Peris, Stübing, Fi- guerola, Alcober, Mateo, Laguna, etc. Amongst the most outstanding quotations and of which there has been confirmed his presence as components of the flora in the territory in some moment of the history they stand out, among many others, Chaenorhinum tenellum (Cav.) Lange, Cirsium valentinum Porta & Rigo, Biscutella leptophylla Pau, Crocus serotinus Salisb., Garidella nigellastrum L., Doronicum plantagineum L., Campanula fastigiata Dufour, etc.