This taxon name is not current. The available references for this name are:
Rostranthus ms is more recently known as Pyrorchis D.L.Jones & M.A.Clem.
Reason: fide A.P. Brown pers. comm. (Feb. 2014)
See also: A longer explanation of these and other terms in our Plant Names Primer.
A taxon name which is no longer current will retain its ‘Threatened’ status until publication of the next Threatened Flora - Rare Flora Notice.