Hysteriales

{{Short description|Order of fungi}}

{{Taxobox

| image =

| image_caption =

| regnum = Fungi

| divisio = Ascomycota

| subdivisio = Pezizomycotina

| classis = Dothideomycetes

| subclassis = Pleosporomycetidae

| ordo = Hysteriales

| ordo_authority = Lindau (1896)

| subdivision_ranks = Families

| subdivision = Hysteriaceae

}}

The Hysteriales are an order of fungi in the class Dothideomycetes, subclass Pleosporomycetidae. It consists of a single family, Hysteriaceae. Members of Hysteriales produce elongated, often boat shaped sexual structures with slit-like openings (hysterothecia). However species with these structures are very diverse. Comparisons based on DNA sequences indicate species with hysterothecia do not share a single ancestor and therefore species with hysterothecia can be found in several fungal orders.Mugambi GK, Huhndorf SM, 2009. Parallel evolution of hysterothecial ascomata in ascolocularous fungi (Ascomycota, Fungi). Systematics and Biodiversity 7: 453–464. The newest definition of the order relies on DNA sequence differences and a combination of morphological characters.Boehm EW, Mugambi GK, Miller AN, Huhndorf SM, Marincowitz S, Spatafora JW, Schoch CL, 2009. A molecular phylogenetic reappraisal of the Hysteriaceae, Mytilinidiaceae and Gloniaceae (Pleosporomycetidae, Dothideomycetes) with keys to world species. Studies in Mycology 64: 49-83S43.[http://www.studiesinmycology.org/cgi/content/full/64/1/49]