Cylindrotheca

{{Short description|Genus of fungi}}

{{Hatnote|Not to be confused with Cylindrotheca, a genus of algae in family Bacillariaceae}}

{{Taxobox

| image =

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| regnum = Fungi

| divisio = Ascomycota

| classis = Incertae sedis

| ordo = Incertae sedis

| familia = Incertae sedis

| genus = Cylindrotheca

| genus_authority = Bon.

| type_species =

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| subdivision_ranks = Species

| subdivision =

}}

Cylindrotheca is a genus of fungi in the Ascomycota phylum. The relationship of this taxon to other taxa within the phylum is unknown (incertae sedis), and it has not yet been placed with certainty into any class, order, or family.{{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 }}