1Laboratory of Plant Ecology, Department of Botany, Faculty of Science, The University of Douala, P. O. Box 24157, Douala , Cameroon.
2Tropical Ecology Research Institute, P. O. Box 13354, Libreville, Gabon.
3Laboratory of Plant Parasitology, The University Pierre and Marie Curie (Paris VI), 4 place Jussieu, case courrier 155, 75252 Paris, Cedex 05, France.
4Department of Biology of Animal Organisms, Faculty of Science, The University of Douala, P. O. Box 24157, Douala, Cameroon; UMR 7205, MNHN, Paris, 55 Rue Buffon.
5Laboratory of Plant Biology and Ecology, The University of Ouagadougou 03 PO BOX 848, Ouagadougou 03, Burkina Faso.
6Department of Plants Biology and Physiology, Faculty of Science, The University of Yaoundé I, P. O. Box 812, Yaoundé, Cameroon.
Email: [email protected]
