 The additional quantum Hall plateaus develop at ν=0, ν=±1, ν=±3 and ν=±4.The mechanism of magnetic catalysis in a relativistic-like planar systems such as graphene is very natural.In fact, it was originally proposed for a 2+1 dimensional model, which is almost the same as the low-energy effective theory of graphene written in terms of massless Dirac fermions.