This taxon name is not current. The available references for this name are:
Helichrysum blackallii N.T.Burb. is more recently known as Ozothamnus blackallii (N.T.Burb.) Anderb.
Reason See A.A. Anderberg in Opera Bot. 104:89 (1991)
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A taxon name that is no longer current will retain its ‘Threatened’, ‘Extinct’, or ‘Extinct in the Wild’ status until a new name has been published in a Biodiversity Conservation Order.