This taxon name is not current. The available references for this name are:
Festuca duriuscula L. has been misapplied against the current name Festuca rubra L.
Reason See J.W. Green in Census of the Vascular Plants of Western Australia Edn. 2:34 (1985)
See also: A longer explanation of these and other terms in our Plant Names Primer.
A taxon name that is no longer current will retain its ‘Threatened’, ‘Extinct’, or ‘Extinct in the Wild’ status until a new name has been published in a Biodiversity Conservation Order.