Cystotheca

{{Short description|Genus of fungi}}

{{Italic title}}

{{Taxobox

| name = Cystotheca

| image =

| image_caption =

| regnum = Fungi

| divisio = Ascomycota

| classis = Leotiomycetes

| ordo = Erysiphales

| familia = Erysiphaceae

| genus = Cystotheca

| genus_authority = Berk. & Curtis

| subdivision_ranks = Species

| subdivisions =

}}

Cystotheca is a genus of fungi in the family Erysiphaceae.{{cite journal|last=Lumbsch TH, Huhndorf SM. |date=December 2007 |title=Outline of Ascomycota – 2007 |journal=Myconet |volume=13 |pages=1–58 |url=http://archive.fieldmuseum.org/myconet/outline.asp |publisher=The Field Museum, Department of Botany |location=Chicago, USA |url-status=dead |archiveurl=https://web.archive.org/web/20090318003134/http://www.fieldmuseum.org/myconet/outline.asp |archivedate=2009-03-18 }}