This name is a synonym of Cotoneaster franchetii Bois.
The record derives from RJP
(data supplied on 2011-10-18)
which reports it as a synonym (record 1030) with original publication details: The Gardener's chronicle The Gardener's chronicle; 1887 60, f.27 1947.
This name record (from RJP) 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 Cotoneaster wardii in version 1 of The Plant List.