Although not hybrids I have included two photographs of double daffodils growing in the wild because they are not commonly found. The first a double N. triandrus ssp. pallidulus was found growing at Desfiladero de Depenaperros and was probably fertile because there were a number growing in close proximity. The second a double N. luteolentus was found about a mile away. (see RHS 1995-6 p18)
N. triandrus ssp. pallidulus ................................................................ N. hedraeanthus luteolentus