Proposal (32) to conserve the name Agrostion castellanae with a conserved type

The alliance name Agrostion castellanae has been widely used for nearly sixty years to indicate a type of acidophilic perennial grasslands occurring in the Iberian Peninsula. At present, the alliance is classified in the order Agrostietalia castellanae, and the class Stipo giganteae-Agrostietea castellanae. However, the nomenclatural type (lectotype) of the Agrostion castellanae is a therophytic grassland, namely the association Holco setiglumis-Anthoxanthetum aristati, that was consistently classified for two decades by Iberian authors within the therophytic class Helianthemetea guttati. In order to preserve the name Agrostion castellanae in its current use, we propose to designate the association Festuco amplae-Agrostietum castellanae as the conserved type of the alliance. (32) Agrostion castellanae Rivas Goday 1958 corr. 1964: 353 nom. cons. propos. Typus: Festuco amplae-Agrostietum castellanae Rivas-Martínez et Belmonte 1986: 418 (typus cons. propos.). (≡) Agrostion castellano-tenuis Rivas-Goday 1958: 626 nom. inept. Taxonomic reference: Euro+Med (2023). Syntaxonomic reference: Mucina et al. (2016). Abbreviations: EVC = EuroVegChecklist (Mucina et al. 2016); ICPN = 4th edition of the International Code of Phytosociological Nomenclature (Theurillat et al. 2021)