The Wooly geranium (Geranium erianthum) belongs to Geraniaceae (the Geranium family). It is a perennial herb that is native to northern Honshu, Hokkaido in Japan, as well as East Asia and North America. This herb grows in sub-alpine to alpine grasslands, and can reach 20-50 cm in height. The leaves are divided into 5-7 lobes palmately, and the segments are further notched. The stems and petioles are covered with dense, descending, appressed hairs. The magenta flowers bloom on the stem apices from June to August.