This taxon name is not current. The available references for this name are:
Erigeron ambiguus F.Muell. is more recently known as Iotasperma australiense G.L.Nesom
Reason See A.R. Bean in Muelleria 37:34 (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A taxon name that is no longer current will retain its ‘Threatened’, ‘Extinct’, or ‘Extinct in the Wild’ status until a new name has been published in a Biodiversity Conservation Order.