Brachyscome gracilis subsp. robusta

The rank of subspecies rather than species has been assigned to this taxon due to its close morphological similarity to the nominate subspecies. In addition to subtle morphological differences its formal recognition is warranted based on its hexaploid ploidy (2n=24 based on x=4) in contrast to the diploid ploidy (2n=8) that has been observed in several specimens of the nominate subspecies (Watanabe & Short 1992) and on its floodplain habitat (Short 2014).