My girlfriend has several Narcissus plants in her living room. She loves the white and yellow petals!
I have never seen one of those before. Are they only grown indoors.
in ancient civilisation, both medicinally and botanically, but formally described by Linnaeus in his "Species Plantarum" (1753). The genus is generally considered to have about ten sections with approximately 50 species. The number of species has varied, depending on how they are classified, due to similarity between species and hybridisation. The genus arose some time in the Late Oligocene to Early Miocene epochs, in the Iberian peninsula and adjacent areas of southwest Europe. The exact origin of the name "Narcissus" is unknown, but it
" (blazing star or gayfeather).
Plants in this tribe have only disc florets (no ray florets) and petals which are white, slightly yellowish off-white, pink, or purple (never a full yellow).
Within the aster family, the Eupatorieae are in the subfamily Asteroideae. 
Within Asteroideae, they are in the supertribe Helianthodae. 
Within Helianthodae, they belong to an informal group without taxonomic rank called the phytomelanin cypsela clade, which contains 11 tribes.
The sister tribe of Eupatorieae