Crivellia
Encyclopedia
Crivellia is a genus
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 fungi in the family Pleosporaceae
Pleosporaceae
Pleosporaceae is a family of sac fungi. The taxonomic relationship of this family to associated genera is still not determined.-Genera list:* Cochliobolus Drechsler* Crivellia Shoemaker & Inderbitzin...

. It is a monotypic
Monotypic
In biology, a monotypic taxon is a taxonomic group with only one biological type. The term's usage differs slightly between botany and zoology. The term monotypic has a separate use in conservation biology, monotypic habitat, regarding species habitat conversion eliminating biodiversity and...

 genus, containing the single species Crivellia papaveracea, which causes leaf blight of opium poppy
Opium poppy
Opium poppy, Papaver somniferum, is the species of plant from which opium and poppy seeds are extracted. Opium is the source of many opiates, including morphine , thebaine, codeine, papaverine, and noscapine...

. The fungus is found in Europe, Australia, India, Japan, Nepal, Pakistan, South Africa, Turkey, USA and Zambia.
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