This taxon name is not current. The available references for this name are:
Vulpia megalura (Nutt.) Rydb. is more recently known as Vulpia myuros var. megalura (Nutt.) Auquier
Reason See P. Auquier in Bull.Jard.Bot.Natl.Belg. 47:123 (1977)
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A taxon name that is no longer current will retain its ‘Threatened’, ‘Extinct’, or ‘Extinct in the Wild’ status until a new name has been published in a Biodiversity Conservation Order.