Narcissus Thalia is an "heirloom" daffodil- an old cultivar of the species N. triandus which grows wild in France, Spain and Portugal. I planted quite a few in the grass and borders a few years ago and it's been a treat to gaze upon them over a coffee every morning this week before heading to work.
 To my mind it's the most graceful of all the daffodils- it's almost impossible for white flowers to look out of place in any garden. Each stem bears two or three flowers: