Jonquills and Apodanthae were separated into two sections by Professor Fernandes in 1966 although Webb separates them only into two subsections. (Blanchard p78). "Man made" hybrids between the two have proved to be sterile. Narcissus from both sections produce hybrids in the wild with triandrus.

At Desfiladero de Despenaperros N. fernandesii grows in large quantities along with N. triandrus pallidullus and many hybrids are formed. These have been named N. X incurvicervicus and several different forms can be found with varying characteristics from each parent. Many are attractive flowers.

Behind the Las Postas Hotel in Navacerrada N. X rupidulus, the hybrid between N. rupicola and N. triandrus ssp. pallidulus, can be found. Not surprisingly in view of the closeness together with which the two parents grow.