Listerella paradoxa

Ella Lister paradoxa is a slime mold from the group of Myxogastria and the only representative of its genus and family Listerelliidae. The species has been found almost exclusively on lichens of the genus Cladonia, mostly in temperate zones, especially in Europe.

Features

The only 0.1 to 0.3 millimeters sporangia are barely visible with the naked eye, black and brown spots, which are Dehiszenzlinien bit brighter and clearly visible. They are sessile, more or less hemispherical and flattened at the base. The single-layer and at the time of spore maturation ripping in four to six lobes peridium is purple-brown, and has only the area of the Dehiszenzlinien dark Kalkknötchen on.

A scalp is weak and consists of pale purplish brown, slender, sinuous filaments that are fused at the peridium. At low magnification the 1 to 1.5 micron thick filaments as strings of pearls appear, at high magnification, the stems can be from the middle of the thread detect goblet- or pear- shaped members which are thickened slightly darker at the rounded end, but colorless. Near the approach to the classification developed only gradually. The thread is here either initially twice as thick as the normal dark-colored, then contact him at constrictions, which divide it into bright stems and nodes are gradually narrower and take the cup shape. Alternatively, the thread is lighter in color from the beginning, and the nodes are developing rapidly from collar-like constrictions.

The spores are black brown as spore mass, by transmitted light brownish yellow. They are single- walled, finely spiny blurred and have a diameter of 7-8 micrometers.

Dissemination

Lister Ella paradoxa is exclusively on the thalli of Cladonia species ( reindeer lichen Cladonia rangiferina, Cladonia Impexa, Cladonia arbuscula, Cladonia gracilis, Cladonia tenuis ) in temperate zones, especially in Europe ( Germany, Sweden, Denmark, Great Britain ), but also sporadically eg been found in Russia and Canada. A Aufsammlung from California is considered unsafe.

Systematics and history of research

Species and genus were first described in 1906 by Edward Adolf Wilhelm Jahn based on a finding from Geesthacht, their exact taxonomic position from the beginning was unclear and is still regarded as uncertain. Because of the threads in the scalp Jahn already looked at them as your own family. In the first half of the 20th century, however, was often conducted at the Dianemaceae, due to their relationship with the Liceaceae often asked about these later.

Evidence

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• Myxogastrien
• Myxogastria