''Lepteutypa'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

plant pathogen Plant pathology (also phytopathology) is the scientific study of diseases in plants caused by pathogens (infectious organisms) and environmental conditions (physiological factors). Organisms that cause infectious disease include fungi, oomyc ...

s in the family

Amphisphaeriaceae The ''Amphisphaeriaceae'' are a family of fungi that is mainly found in parts of New Zealand, South America, Asia and parts of Europe. According to the 2007 Outline of Ascomycota, there are 41 genera placed within the family, although the positio ...

. First described by the Austrian mycologist

Franz Petrak Franz Petrak (9 October 1886, Mährisch-Weißkirchen – 9 October 1973, Vienna) was an Austrian-Czech mycologist. From 1906 to 1910, he studied botany at the University of Vienna, where he was a student of Richard Wettstein. In 1913 he obtaine ...

in 1923, the genus contains 10 species according to a 2008 estimate. The genus ''Lepteutypa'' is teleomorphic (reproducing sexually) and the corresponding

anamorphic Anamorphic format is the cinematography technique of shooting a widescreen picture on standard 35 mm film or other visual recording media with a non-widescreen native aspect ratio. It also refers to the projection format in which a distorted ...

name, used to describe the asexual form, is ''Seiridium'' (formerly ''Coryneum''). For instance, the name ''Seiridium cupressi'' can still be used for the anamorphic form of that species, but now that it is known that a sexual stage exists, the name ''Lepteutypa cupressi'' should be preferred for the species as a whole. On the other hand, no sexual stage of species ''

Seiridium cardinale ''Seiridium cardinale'' is a species of fungus. It is the primary cause of Cypress canker Cypress canker is a disease affecting ''Cupressus'' species, caused by one of several species of fungus in the genus ''Seiridium''. Infection causes die ...

'' is known, so that is its only name. ''Seiridium cardinale'' and ''L. cupressi'' are important to gardeners and foresters as they cause the devastating Cyprus canker disease of ''

Cupressus ''Cupressus'' is one of several genera of evergreen conifers within the family Cupressaceae that have the common name cypress; for the others, see cypress. It is considered a polyphyletic group. Based on genetic and morphological analysis, the ge ...

'', ''

Thuja ''Thuja'' ( ) is a genus of coniferous tree or shrub in the Cupressaceae (cypress family). There are five species in the genus, two native to North America and three native to eastern Asia. The genus is monophyletic and sister to ''Thujopsis''. M ...

'', and related conifers in Northern Europe, America, Australia and New Zealand. ''S. cardinale'' is from California and was introduced to Europe around the 1930s, probably from infected nursery stock. A separate introduction affected the southern hemisphere.

References

Xylariales Taxa named by Franz Petrak Taxa described in 1923 {{Xylariales-stub