Festuca duriuscula subsp. durissima Festuca ovina subsp. durissima Festuca yvesii Festuca duriuscula var. durissima Festuca ovina subvar. durissima Festuca indigesta subsp. durissima Festuca ovina f. villiflora Festuca ruscinonensis
Taxonomic data from World Flora Online, accessed June 20, 2024