This taxon name is not current. The available references for this name are:
Gamochaeta coarctata (Willd.) Kerguelen is more recently known as Gamochaeta americana (Mill.) Wedd.
Reason See S.E. Freire et al. in Phytotaxa 523:277 (2021)
Gnaphalium coarctatum Willd. is a nomenclatural synonym.
Reason See M. Kerguelen in Lejeunia 120:104 (1987)
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A taxon name that is no longer current will retain its ‘Threatened’, ‘Extinct’, or ‘Extinct in the Wild’ status until a new name has been published in a Biodiversity Conservation Order.