This taxon name is not current. The available references for this name are:
Calectasia grandiflora L.Preiss subsp. grandiflora ms is more recently known as Calectasia grandiflora L.Preiss
Reason: No subspecies recognised. See R.L. Barrett & M.D. Barrett in Nuytsia 26:46-52 (2015)
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A taxon name which is no longer current will retain its ‘Threatened’ status until publication of the next Wildlife Conservation (Rare Flora) Notice.