Cosmarium trachypleurum var. fallax
Cosmarium trachypleurum var. minus
Cosmarium trachypleurum var. spinosum
Cosmarium trachypleurum var. subglabrum
Cosmarium trachypleurum var. nordstedtii
Cosmarium trachypleurum var. subnudum
Cosmarium trachypleurum var. cornutum
Cosmarium trachypleurum var. natalense
Cosmarium trachypleurum var. subspinosum
Cosmarium trachypleurum f. irregulare
Cosmarium trachypleurum var. pseudonatalense