1. CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, Kunming, Yunnan 650201 P.R. China.
2. The New Zealand Institute for Plant and Food Research Limited, Gerald Street, Lincoln 7608, New Zealand.
3. 15 Lynfield Avenue, Ilam, Christchurch, New Zealand.