1. FLORA FAUNA & MAN Ecological Services Ltd Tortola British Virgin Islands
2. Department of Plant & Soil Sciences University of Pretoria Pretoria South Africa
3. Centre d'Etude sur les Ressources Végétales, Herbier National du Congo Brazzaville Republic of Congo
4. Ekotrust Somerset West South Africa
5. Centre for African Ecology, School of Animal, Plant and Environmental Sciences University of the Witwatersrand Johannesburg South Africa