Staurastrum inconspicuum var. crassum
Staurastrum inconspicuum var. elongatum
Staurastrum inconspicuum var. abbreviatum
Staurastrum inconspicuum var. minus
Staurastrum inconspicuum var. planctonicum
Staurastrum inconspicuum f. gracilior
Staurastrum inconspicuum f. gracilor
Staurastrum inconspicuum f. inconspicuum