Ramularia

{{Short description|Genus of fungi}}

{{Automatic taxobox

| image = Fungi-Ramularia-rubella-201304280006.JPG

| image_caption = Ramularia rubella on Rumex sp.

| taxon = Ramularia

| authority = Unger (1833)

| type_species = Ramularia pusilla

| type_species_authority = Unger (1833)

| subdivision_ranks = Species

| subdivision = See List of Ramularia species

}}

Ramularia is a genus of ascomycete fungi. Its species, which are anamorphs of the genus Mycosphaerella, are plant pathogens.{{cite book |title=Dictionary of the Fungi |vauthors=Kirk PM, Cannon PF, Minter DW, Stalpers JA |publisher=CAB International |year=2008 |isbn=978-0-85199-826-8 |edition=10th |location=Wallingford, UK |page=592}} Economically important host species include Narcissus, sugar beet, and barley.{{Cite journal |last1=Videira |first1=S.I.R. |last2=Groenewald |first2=J.Z. |last3=Braun |first3=U. |last4=Shin |first4=H.D. |last5=Crous |first5=P.W. |date=2016-03-01 |title=All that glitters is not Ramularia |journal=Studies in Mycology |language=en |volume=83 |issue=1 |pages=49–163 |doi=10.1016/j.simyco.2016.06.001 |issn=0166-0616 |pmc=4986539 |pmid=27570325}}

Ramularia species are hyphomycetes with simple morphology; other genera are frequently mistaken for Ramularia. {{As of|2024}}, almost 800 species are recognised in the genus Ramularia.{{Cite web |title=Index Fungorum - Search Page |url=https://www.indexfungorum.org/Names/Names.asp?pg=1 |access-date=2024-08-28 |website=www.indexfungorum.org}}