This taxon name is not current. The available references for this name are:
Tysonia F.Muell. is more recently known as Neotysonia Dalla Torre & Harms
Reason: See A.A. Anderberg in Opera Botanica 104:114(1991)
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A taxon name which is no longer current will retain its ‘Threatened’ status until publication of the next Threatened Flora - Rare Flora Notice.