In the past this name has been erroneously used to refer to Vigna unguiculata subsp. stenophylla (Harv.) Marechal & al..
The record derives from ILDIS
(data supplied on 2010-07-14)
which reports it as a misapplied name (record
This name was in version 1 of The Plant List, record ild-41301, and has not been changed.