This taxon name is not current. The available references for this name are:
Isotoma hypocrateriformis var. trichogramma N.G.Walsh ms is more recently known as Isotoma hypocrateriformis (R.Br.) Druce
Reason: Fide N.G. Walsh in litt. (2010)
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A taxon name which is no longer current will retain its ‘Threatened’ status until publication of the next Wildlife Conservation (Rare Flora) Notice.