This taxon name is not current. The available references for this name are:
Conospermum filifolium subsp. sigmoideum E.M.Benn. ms is more recently known as Conospermum sigmoideum E.M.Benn.
Reason Fide T. Macfarlane in litt.
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A taxon name that is no longer current will retain its ‘Threatened’, ‘Extinct’, or ‘Extinct in the Wild’ status until a new name has been published in a Biodiversity Conservation Order.