List of Closterium taxa
- Closterium abruptum
- Closterium acerosum
- Closterium aciculare
- Closterium acutum
- Closterium acutum var. variabile
- Closterium angustatum
- Closterium angustatum var. sculptum
- Closterium archerianum
- Closterium archerianum var. pseudocynthia
- Closterium attenuatum
- Closterium baillyanum
- Closterium braunii
- Closterium calosporum
- Closterium closterioides
- Closterium costatum
- Closterium cynthia
- Closterium dianae
- Closterium dianae var. arcuatum
- Closterium dianae var. rectius
- Closterium didymotocum
- Closterium directum
- Closterium ehrenbergii
- Closterium gracile
- Closterium idiosporum var. punctatum
- Closterium incurvum
- Closterium juncidum
- Closterium karnakense
- Closterium kuetzingii
- Closterium leibleinii var. boergesenii
- Closterium lineatum
- Closterium lunula
- Closterium moniliferum
- Closterium navicula
- Closterium navicula var. crassum
- Closterium nematodes
- Closterium parvulum
- Closterium praelongum
- Closterium pritchardianum
- Closterium pronum
- Closterium pseudolunula
- Closterium pusillum
- Closterium pygmaeum
- Closterium ralfsii var. hybridum
- Closterium rectimarginatum f.
- Closterium regulare
- Closterium rostratum
- Closterium setaceum
- Closterium striolatum
- Closterium submoniliferum
- Closterium subulatum
- Closterium turgidum