Ophiostomatales

The Ophiostomatales are an order of Ascomycota. Most species colonize wood and bark. Well-known representatives are the cause of the dying elms ( Ophiostoma ulmi and Ophiostoma novo - ulmi ). Ophiostoma piliferum causes the blue color of hardwood and softwood. However, most species live as Saprobionten, their spores are often spread by beetles. The anamorphs are partly human pathogens ( Sporothrix schenckii ).

Features

The system is characterized by single, black perithecia. In most species they have a long neck, from which emerge the sticky ascospores, from where they are spread by insects. This form of fruiting bodies is similar to the genus Ceratocystis in the Micoascales. The asci are plump and dissolve early on in development.

The anamorphs are hyphomycetes. They belong to the genera Leptographium, Sporothrix and Pesotum.

System

To order the following families are counted ( with selected genera and species ):

  • Kathistaceae with the single genus Kathistes
  • Fragosphaeria
  • Klasterskya
  • Ophiostoma
  • Spumatoria
  • Subbaromyces

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