This taxon name is current. The available references for this name are:
Arthrochilus byrnesii Blaxell is a nomenclatural synonym.
Reason Fide A.P. Brown in litt. (13/06/2018)
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A taxon name that is no longer current will retain its ‘Threatened’, ‘Extinct’, or ‘Extinct in the Wild’ status until a new name has been published in a Biodiversity Conservation Order.