Daphne × transatlantica C.D.Brickell & A.R.White, New Plantsman 7: 245 2000. ;
.

Daphne × transatlantica ‘Blafra’ often marketed as Eternal Fragrance
Species is hybrid, cross between D. caucasica (deciduous female) and D. collina (evergreen male). The cultivar is  rounded, open-branched shrub that features intensely fragrant white flowers in spring with irregular and sporadic continued bloom.
Photographed from Summerwinds Nursery, Sunnyvale, California, 18-4-2014.


References: