Lepteutypa
Encyclopedia
Lepteutypa is a genus
of plant pathogens in the family Amphisphaeriaceae
. First described by the Austrian mycologist Franz Petrak in 1923, the genus contains 10 species according to a 2008 estimate.
The genus Lepteutypa is teleomorphic
(reproducing sexually) and the corresponding anamorphic
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 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
, Thuja
, and related conifers in Northern Europe, America, 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.
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
of plant pathogens in the family Amphisphaeriaceae
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 position of 13 of those genera is uncertain.- Origins and...
. First described by the Austrian mycologist Franz Petrak in 1923, the genus contains 10 species according to a 2008 estimate.
The genus Lepteutypa is teleomorphic
Teleomorph, anamorph and holomorph
The terms teleomorph, anamorph, and holomorph apply to portions of the life cycles of fungi in the phyla Ascomycota and Basidiomycota.*Teleomorph: the sexual reproductive stage , typically a fruiting body....
(reproducing sexually) and the corresponding anamorphic
Teleomorph, anamorph and holomorph
The terms teleomorph, anamorph, and holomorph apply to portions of the life cycles of fungi in the phyla Ascomycota and Basidiomycota.*Teleomorph: the sexual reproductive stage , typically a fruiting body....
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 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
Canker
Canker and anthracnose are general terms for a large number of different plant diseases, characterised by broadly similar symptoms including the appearance of small areas of dead tissue, which grow slowly, often over a period of years. Some are of only minor consequence, but others are ultimately...
disease of Cupressus
Cupressus
The genus Cupressus is one of several genera within the family Cupressaceae that have the common name cypress; for the others, see cypress. It is considered a polyphyletic group...
, Thuja
Thuja
Thuja is a genus of coniferous trees in the Cupressaceae . There are five species in the genus, two native to North America and three native to eastern Asia...
, and related conifers in Northern Europe, America, 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.