Cosmarium obliquum var. csatoi
Cosmarium obliquum f. duplex
Cosmarium obliquum f. minimum
Cosmarium obliquum f. monstruosum
Cosmarium obliquum var. symmetricum
Cosmarium obliquum var. ovale
Cosmarium obliquum var. corribsensiforme
Cosmarium obliquum f. medium
Cosmarium obliquum var. tatricum
Cosmarium obliquum var. trigonum
Cosmarium obliquum f. minima