This name is a synonym of Daphnopsis americana subsp. salicifolia (Kunth) Nevling.
The record derives from WCSP (in review)
(data supplied on 2012-03-26)
which reports it as a synonym with original publication details: Diss. Daphne ed. 2: 40 1820.
This name was in version 1 of The Plant List, record kew-2756943, and has not been changed.