This N. pseudonarcissus ‘Star de Wallonie’ without crown has been found by Ruben Billiet and Olivier Vico in the region near Tournai (Belgium) and is fertile. The pictures are not from me but published on www.passionforbulbs.be. Species without or with rudimentary crown are N. cavanillesii and N. broussonetii. The pseudonarcissus ‘Star de Wallonie’ may be interesting for crosses. I suppose it is a dominant mutation. My question is: Did anyone see flowers of other species or daffodil varieties without crown.
Theo