1994 Volume 75 Pages 41-44
There are approximately 20 species of Mitthyridium Robins. (Musci: Calymperaceae) worldwide. The species are classified here into four subgenera: Mitthyridium subg. Mitthyridium, M. subg. Euryphyllum subg. nov., M. subg. Brachycladum subg. nov., and M. subg. Infundibulum subg. nov.