Cosmarium taxichondrum f. bidentulum
Cosmarium taxichondrum var. granulatum
Cosmarium taxichondrum var. mucronatum
Cosmarium taxichondrum var. yamagishii
Cosmarium taxichondrum var. subundulatum
Cosmarium taxichondrum var. pentachondrum
Cosmarium taxichondrum var. compressum
Cosmarium taxichondrum var. dentatum
Cosmarium taxichondrum f. subdenticulatum
Cosmarium taxichondrum var. emarginatum
Cosmarium taxichondrum var. magnum
Cosmarium taxichondrum var. ellipticum
Cosmarium taxichondrum var. mauritianum
Cosmarium taxichondrum var. angulatum
Cosmarium taxichondrum var. truncatum
Cosmarium taxichondrum var. undulatum
Cosmarium taxichondrum var. ambadiense
Cosmarium taxichondrum var. bidentulum
Cosmarium taxichondrum var. irenee-mariae
Cosmarium taxichondrum var. nudum
Cosmarium taxichondrum var. sudanense