Abstract Background Xylaria is a diverse and ecologically important genus in the Ascomycota. This paper describes the xylariaceous fungi present in an Ecuadorian Amazon Rainforest and investigates the decay potential of selected Xylaria species. Fungi were collected at Yasuní National Park. Ecuador during two collection trips to a single hectare plot divided into a 10-m by 10-m grid. https://normakamalies.shop/product-category/swim-bottom/