This name is a synonym of Tephrosia pachypoda L.Riley.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 13003459) with original publication details: Contr. U.S. Natl. Herb. 29: 101 1945.
This name record (from Tropicos) was not included in version 1 of The Plant List. It is possible the same name was included from a different data source, to check this you can search for Tephrosia lupinoides in version 1 of The Plant List.