This name is a synonym of Argyranthemum frutescens subsp. foeniculaceum (Pit. & Proust) Humphries.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 371B4674-F59C-4C81-9422-B0E4097C9110) with original publication details: Plantae Canariensis 230 1908.
This name was in version 1 of The Plant List, record gcc-62703, and has not been changed.