LEVANETS, Anatoliy, & Leon Van RENSBURG 2011 Desmids of southern Africa. An annotated and illustrated list The Platinum Press, Potchefstroom, Republic of South Africa. 332 pp., 1 fig. 617 names accepted; incl. 3 new combs.: Closterium claassenii, Cosmarium claassenii, Xanthidium mogolense |