Each seed in an F2 generation cross of daylilies is (likely) genetically unique, but not necessarily unique in appearance (phenotype). The simple Mendelian example is a red flowered inbred line x white flowered inbred line producing all red flowered F1 seedlings and the F1 seedling selfed producing the F2 generation of three red flowered to 1 white flowered. Tetraploid (even diploid) daylily genetics are not as clear cut. For example, there may be as many as 60 to 100 diferent genes affecting flower colour. The end result in a daylily F2 may be more like the figure below (for any characteristic, not just flower colour):
[click on the picture for all the details]
Most seedlings would be in the centre section and be some medium shade of red, but genetically different. But, there could be seedlings in the distant tails. It all depends on the 'luck of the draw'. The more seedlings one grows the more likely one will be from the ends of the distribution. Breeding is a numbers game.
