We thank the following organisations for funding the ZRC:

Royal Botanic Garden Edinburgh – www.rbge.org.uk
National Parks Board Singapore – www.nparks.gov.sg
Singapore Botanic Gardens – www.sbg.org.sg
Botanic Gardens Conservation International - www.bgci.org
Asean Centre for Biodiversity - www.aseanbiodiversity.org

Marlina Ardiyani, Herbarium Bogoriense (Curcuma)
Gaëlle Auvray (Cautleya)
Federico Fabriani (compiling species pages in Amomum)
Vichith Lamxay, National University of Laos (Amomum – Laos)
Jana Leong-Škorničková
Jane Marczewski (Amomum – Sumatra)
Mark Newman
Chatchai Ngamriabsakul, Walailak University, Nakhon Sri Thammarat (Roscoea)
Axel Dalberg Poulsen (Etlingera)
Gabriela Quiroga (Renealmia)
Achariya Rangsiruji, Srinakharinwirot University, Bangkok (Alpinia)
Simon Tan Wei Min (Gagnepainia & Hemiorchis)
Yao Hui Lim (adding protologue images)