Michael Möller (Royal Botanic Garden Edinburgh, UK)
Hannah Atkins (Royal Botanic Garden Edinburgh, UK)
Kanae Nishii (Royal Botanic Garden Edinburgh, UK)
Martin Pullan (Royal Botanic Garden Edinburgh, UK)
John L. Clark (The Lawrenceville School, USA)
Laurence E. Skog (Smithsonian Institution, USA)
Hong Xin (Anhui University, China)
Wen Fang (Guangxi Institute of Botany, China)
Alain Chautems (Conservatoire et Jardin botaniques de la Ville de Genève (G), Switzerland)
David J. Middleton (Singapore Botanic Gardens, Singapore)