"Miyama-kawara-hannoki" (Alnus fauriei) belongs to the Betulaceae (the Birch family). It is a semi-tall deciduous tree that is distributed in snowy areas of Honshu, mainly Tohoku and Hokuriku regions. This tree grows in slightly damp areas in the mountains, and up to a height of 8-10 m. The branches are hairless, dark purple and have small lenticels. The leaves are obovate-round or obcordate-round, with a concave at the tip, cuneatic bases and low wavy edges. From April to May, before developing the leaves, attach a male inflorescence at the tip of the branch and a female inflorescence that stands upright at the node immediately below. The fruits are flat nuts with narrow wings at the edges.