Stout bred doubles using both flore pleno and kwanso. He studied them and classified them both as para -doubles.
This is how he described a para-double:
"Having at least some well-formed stamens or petaloids with some traces of anthers. Usually there is duplication of petals or petaloid stamens. There is abortion or sterilization of the pistil. Such a flower is sterile as a seed parent."
He also described the differences between the two cultivars:
"A comparison of the flowers of the two clones, Flora Pleno and Kwanso. The flowers of the Flora Pleno Daylily ... in comparison with those of Kwanso ... have a greater number of well-formed petals, the number of stamens and aborted stamens per flower is less, and the pistil is more frequently fully aborted or not in evidence. The central column of the flower is shorter and the flower is more compact."
It is probably extremely difficult to identify the two cultivars unless one has them growing in the same conditions and unless one takes numerous measurements and counts of different characteristics on substantial numbers of their flowers and then does statistical comparisons.
