Professor, School of Environmental and Animal Sciences, Unitec Institute of Technology, Auckland. I have a broad range of interests covering threat classification systems, threatened plants, biosystematics (Asteraceae, Myrtaceae, Peltigeraceae), lichens, plant ecology, plant cytology and the flora of offshore islands. A particular interest right now is the Chatham Islands Archipelago for which I am writing a field guide. I also maintain an interest in Quaternary Sciences and Speleology.