Requienella

Requienella is a small genus of bark-dwelling ascomycete fungi in the family Requienellaceae. It was erected by Jean-Henri Fabre in 1883 for species with black, partly exposed fruiting bodies and large, dark, many-septate spores. The genus was long difficult to classify, and was discussed in both mycological and lichenological literature, but modern DNA studies place it in the order Xylariales. Most modern authors treat Requienella as non-lichenised, and its species are best known from the bark of old living trees.

==Taxonomy== Jean-Henri Fabre introduced Requienella in Annales des Sciences Naturelles and dedicated the name to the botanist Esprit Requien of Avignon. His original concept included four species. Later revision showed that only one of them belonged in the modern sense of the genus, and Jean Boise reinstated Requienella in 1986 with R. seminuda as its type species.