Cell wall deficient organisms are -
Mycoplasmas(PPLO) are bacteria that are cell wall deficient and hence do not possess morphology (JOKER OF PLANT KINGDOM). They occur as round or oval bodies and as interlacing filaments
Chlamydia
Mycoplasma
Staphylococcus
Clostridium
General Microbiology Pa 1 (History, Microscopy, Stains and Structure and Physiology of Bacteria)