 The species is currently regarded as monotypic . Three varieties of Ficus obliqua were recognised until 2001 — F. obliqua var. petiolaris , F. obliqua var. obliqua , and F. obliqua var. <unk> from Western Australia . A revision of the group led to the conclusion that F. obliqua var. petiolaris belonged in the species F. rubiginosa . F. obliqua var. <unk> was found to be more distantly related to obliqua than rubiginosa and hence has been reclassified as a separate species , Ficus brachypoda . 
