This taxon name is not current. The available references for this name are:
Microcoleus chthonoplastes Gomont is more recently known as Coleofasciculus chthonoplastes (Gomont) Siegesmund, J.R.Johans. & Friedl
Reason See M.A. Siegesmund et al. in J.Phycol. 44:1575 (2008)
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A taxon name that is no longer current will retain its ‘Threatened’, ‘Extinct’, or ‘Extinct in the Wild’ status until a new name has been published in a Biodiversity Conservation Order.