Additional notes on Xylaria chordaeformis Lloyd (Xylariaceae, Ascomycota) in Brazil

There is a high diversity of Xylaria species in the Neotropics; however, there are few mycologists in this region that study the taxonomy of Xylariaceae. With the aim of contributing to the taxonomy of the group, this work provides additional notes on Xylaria chordaeformis, a filiform species found on dead wood. The specimen was collected in a private reserve in the state of Santa Catarina, in southern Brazil. The main features that characterize X. chordaeformis are filiform stromata, naked mammiform perithecia, and ascospores with a sigmoid germ light. Future molecular studies would allow us to verify whether there are cryptic taxa within X. chordaeformis due to the morphological variation (stromata and ascospores) found in this species.