All of the plants are pure flavas, all from the same seedpod. As I've mentioned, I collected the seedpod from a site in North Carolina. The parent plant was a nice 'atropurpurea,' according to Schnell's descriptions. I've germinated other seedpods from similar looking flavas but, never got reds like some of these shown.
Schnell's flava taxonomy is an excellent representation of this species but, it's not inclusive. There are many variations in the field that don't fit into his descriptions. Calling them intragrades may be too simplified. As this pod has demonstrated, one variety can yield many other varieties; 'atropurpurea,' 'cupria,' 'ornata' in this case.
I'll see if I can dig up some more photos.
imduff