[3][2] His research interests include the systematics of the plant families Proteaceae, Rhamnaceae and Violaceae, and the conservation ecology of grassy woodland ecosystems.
[3] He also works in biodiversity informatics,[3] developing and teaching the development of interactive multi-access keys,[4][5][6][7] and has been involved in the design of software for the Global Biodiversity Information Facility.
[3] He obtained a PhD from the University of Melbourne in 1993, and has since published many papers, notably a treatment of the Rhamnaceae for the Flora of Australia series of monographs,[3] and, with Pauline Ladiges, a taxonomic arrangement of Banksia.
[9] More recently, he has worked on pollination systems,[10] taxonomy,[11][12][13][14] vegetation dynamics,[15][16] and described further new species.
[17][18] He has contributed over 2000 images to Wikipedia Commons of Western Australian plants and weeds.