Chrysosplenium tosaenseChrysosplenium tosaense is a species of flowering plant in the family Saxifragaceae that is endemic to Japan.TaxonomyThe species was first described, as Chrysosplenium flagelliferum var. tosaense, by Japanese botanist Makino Tomitarō in 1901. In 1935, Sutō Chiharu elevated the variety to species rank. The specific epithet relates to the type locality, Nanokawa in Kōchi Prefecture.DescriptionChrysosplenium tosaense grows to a height of and flowers from April to May.DistributionChrysosplenium tosaense is endemic to Japan, where it occurs from the Kantō region to the Chūgoku region of Honshū, Shikoku, and Kyūshū.