Global Tree Specialist Group Members

The IUCN/SSC Global Tree Specialist Group (GTSG) has over 80 expert members from botanic gardens, herbaria, universities and both governmental and non-governmental organisations.  Find out more about the specialists who help to inform the conservation work we carry out.

Forest - Trees - Argentina - Parana Environs- November 2003 (10)

Joel Timyan

Societe Audubon Haiti


Maria de los Ángeles La Torre-Cuadros

Management & conservation of tropical forests through understanding of natural & social processes

Faculty of Forest Sciences, Universidad Nacional Agraria La Molina, Peru

Muna tree, Aningeria adolfi-friederici

Dr. Carmen Ulloa Ulloa

Andean Flora

Missouri Botanical Garden, USA


Lahiru S. Wijedasa

Pursuing a PhD in Southeast Asian Peatswamp forest conservation and revising the taxonomy of Memecylon (Melastomataceae) in Indochina and Malesia.

National University of Singapore & ConservationLinks

Peter Wilkie 2

Dr. Peter Wilkie

Sapotaceae, taxonomy, systematics, conservation

Royal Botanic Garden Edinburgh, UK

Rhododendron forest 4

Nelson Zamora

Herbarium of the National Institute of Biodiversity of Costa Rica


Nyree Zerega

Director and Senior Lecturer, Plant Biology & Conservation Graduate Program, Herbarium Director and Plant Systematist

Northwestern University &Chicago Botanic Garden