Diversity of Boletaceae in western Burkina Faso

Résumé

Mycological outings to the Toussiambandogou, Dan, Mondon gallery forests and the Kou Classified Forest in western Burkina Faso over the last five years have resulted in the collection of one hundred and twenty (120) basidiomes of the Boletaceae family. They were dried and carefully preserved in the mycotheque of the Phytopathology and Tropical Mycology team of the Life and Earth Sciences Training and Research Unit (UFR/SVT) of the Joseph KI-ZERBO University. The various descriptions carried out on the fresh samples and on the exsiccata. They allowed to divide the collection into twelve genera (12), namely Afroboletus (4.17%), Boletus (18.33%), Boletellus (8.33%), Crocinoboletus (5%), Hourangia (0.83%), Rubinoboletus (19.17%), Pulveroboletus (16.67%), Sotorius (2.50%), Suilus (0.83%), Strobilomyces (2.50%), Tylopilus (6.67%) and Xerocomus (15%) and forty-nine (49) species of which thirteen species are formally described. These results show that the Toussiambandougou gallery forest has a good diversity of boletes, with a rate of 46.67%, followed by Dan (11.67%). The Kou Classified Forest, despite its wealth of ectomycotrophic woody species and the extensive protection afforded to it by the Ministry of the Environment, was one of the poorest biotopes in Boletaceae (3.33%). This observation could be explained by the closure of the vegetation cover that does not allow good aeration and also by the senescence of the plant species that make up this forest. The present study, which is purely taxonomic, reveals the richness of Boletaceae in three gallery forests in the province of Kenedougou and the Kou Classified Forest in the province of Houet in western Burkina Faso.

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