This taxon name is not current. The available references for this name are:
Citrullus lanatus (Thunb.) Matsum. & Nakai has been misapplied against the current name Citrullus amarus Schrad.
Reason See G. Chomicki & S.S. Renner in New Phytol. 205:529 (2015)
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A taxon name that is no longer current will retain its ‘Threatened’, ‘Extinct’, or ‘Extinct in the Wild’ status until a new name has been published in a Biodiversity Conservation Order.