Species that he discovered and that were named after him include the Caucasian black grouse (Tetrao mlokosiewiczi) and the golden peony (Paeonia mlokosewitschii).
The species discovered by him, which are also referred to as his namesakes, comprise the Caucasian black grouse (Tetrao mlokosiewiczi) and the golden peony (Paeonia mlokosewitschii).