I found anther Asian Brassica green that looks very little like what I expected: "Tatsoi" that is not a low-growing, flat rosette, but rather has stems. It seems that market growers like things they can make into "bunches".
At Johnnies Seeds:
'Koji', an F1 tatsoi, replacing 'Yukina Savoy' in their catalog.
http://www.johnnyseeds.com/p-9...
I guess once they start making F1s, they can get a variety of shapes and still call it either of the parents' names.
