Korea
Also see hybridizer Takenoshin Nakai.
Iris publications:
Nakai, T., (1914), in Fedde, Repert. xiii. 248 (1914); et in Matsum. Ic. Pl. Koisikav. ii. 85,1127. Iris koreana
Nakai, T., (1922), in Mori, Enum. Pl. Cor. 98 (1922) Iris ruthenica var. nana, Maxim.
-- BobPries - 2012-05-18