The "Ryomen-shida" (Arachniodes standishii) belongs to the family Dryopteridaceae. It is an evergreen fern that is native throughout Japan. This fern grows in mountain valleys or wettish slopes and can reach 60-150 cm in height. The leaves are yellowish-green to mid green and tripinnate compound. The most lower pinnae are arrarged discending. It is difined by the both sides of young leaves have same color.