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Listerella paradoxa
''Listerella paradoxa'' is a slime mould species from the subclass Myxogastria and the only member of its genus as well as the family Listerelliidae. The species is so far only found on the wattle genus ''Cladonia'', mostly in European temperate zones.
== Characteristics ==
The sporangia are just 0.1 to 0.3 mm large,〔 visible to the unaided eye as mere black-brown dots. The dehiscence lines are slightly lighter and clearly visible. They are unstiped,〔 more or less hemispheric and flattened on the edge. The single layered peridium is tearing in four to six lobes during spore maturity and is purple-brown. It features dark lime tubercles only on the dehiscence lines.〔
A capillitium is less developed and is composed of pale purple-brown, slim, vermiculated strands, which are overgrown on the peridia. On low magnification, the 1 to 1.5 µm thick〔 strands look like string of pearls. On high magnification, there are from the centre of the strand on cup or pear-shaped links visible, which thickenings are slightly darker on the blunted end, but the stipes are sallow. The link becomes gradually developed near the edge. The strand is first twice as thick as the normal dark-coloured one, then constrictions appear on them. Then, the constrictions become apparent on them, which arrange it into light stipes and knots, become little by little slimmer and take the shape of a cup. Alternatively, the strand is lighter coloured from the beginning on and the knots rapidly develop from the collar-like constrictions.〔
The spores are black-brown as spore mass and in transmitted light brownish yellow. They are on one side thin-walled, blur finely acanthoid and have a diameter from 7 to 8 µm.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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