Closterium didymotocum var. crassum
Closterium didymotocum var. elenkinii
Closterium didymotocum var. brebissonianum
Closterium didymotocum var. glabrum
Closterium didymotocum var. irregulare
Closterium didymotocum f. minus
Closterium didymotocum f. striolatum
Closterium didymotocum var. annulatum
Closterium didymotocum var. asperulatum
Closterium didymotocum var. dacussatum
Closterium didymotocum var. delpontei
Closterium didymotocum var. major
Closterium didymotocum var. minus
(tree size 1)
Closterium didymotocum var. pygmaeum
Closterium didymotocum var. striatum
Closterium didymotocum var. striolatum
Closterium didymotocum var. tropicum
Closterium didymotocum f. crassum
Closterium didymotocum f. perporosa