Abstract

Keys, descriptions and illustrations for the four taxa, i. e., R. dozyanum Sande Lac., R. spiniforme (Hedw.) Bruch var. spiniforme, R. spiniforme var. badakense (Fl.) Iwats. And R. spiniforme var. ryukyuense Iwats. Of the genus Rhizogonium Brid. Found in Taiwan are presented. Previous reported of Taiwanese Rhizogonium species are re-evaluated based on collections made chiefly by the author. R. armatum Sakurai is treated as a variation form of R. spiniforme var. badakense.