An Alphabet of Kales (almost).

I'm not sure that I understand the terms Grex or Landrace but it seems to be about growing a variety that grows well for you in your garden. They're the result of cross pollination between your kales and, subsequent selection of the ones you like best. Sort of happy mongrels..
People are crossing kales with Daubenton's (and others) to breed more perennial kales with different characteristics - like purple leaves or curly/flat/toothed/smooth.

I'm sure this accounts for why there are so many different kales, many of which seem to be identical when you grow them. Its also a good excuse for not knowing what kales I''m growing as they could also be crosses after all these years.