What is "hololeion"

Hololeion is a genus of East Asian flowering plants in the dandelion family. It is native to Japan, Korea, China, and the Russian Far East.

1. Hololeion fauriei (H.Lév. & Vaniot) Kitam. - South Korea
2. Hololeion krameri Kitam. - Honshu, Kyushu
3. Hololeion maximowiczii Kitam. - Korea, Kyushu, Amur, Khabarovsk, Primorye, Heilongjiang, Jiangsu, Jilin, Liaoning, Inner Mongolia, Zhejiang