Closterium libellula var. intermedium
Closterium libellula var. interruptum
Closterium libellula var. libellula
Closterium libellula var. angusticeps
Closterium libellula var. elongatum
Closterium libellula f. elongatum
Closterium libellula var. pulneyensis
Closterium libellula var. crassum
Closterium libellula var. sikkimense
Closterium libellula var. gracilis
Closterium libellula var. punctatum
Closterium libellula var. subcylindricum
(tree size 1)
Closterium libellula subsp. interruptum
Closterium libellula f. intermedium
Closterium libellula f. sygmoideum