K.  Thiele, ?Updates to the sequence and arrangement of collections?, Updates to the sequence and arrangement of collections, 2010. [Online]. Available: http://florabase.dpaw.wa.gov.au/articles/sequence/.

A.  Chapman, ?A visual guide to the Interim Biogeographic Regionalisation for Australia (IBRA) in WA?, A visual guide to the Interim Biogeographic Regionalisation for Australia (IBRA) in WA, 2013. [Online]. Available: http://florabase.dpaw.wa.gov.au/help/ibra/#map.