Species: Arcyria denudata (L.) Wettst
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Description:
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SPOROCARPS: stalked, gregarious to crowded but occasionally scattered, 2 to 6 mm. Sporotheca ovate to cylindrical, pinkish red to brick red 0.4 - 1.2 wide.

STALK: slender, sriate, same colour as the sporotheca or darker 0.5 -1.5 mm long. Hypothallus ether small and inconspicuous under individual sporangia or contiguous for a group of sporangia, reddish brown with a silvery sheen.

PERIDIUM: persisting as a shallow calycus in mature fruiting bodies only, shining, plicate, smooth or nearly so.

CAPILLITIUM: consisting of a network of threads 3 - 4 µm in diameter and marked with cogs and half-rings, firmly attached to the whole surface of the calyculus.

Arcyria denudata as it matures.
SPORES: Red or reddish brown in mass, colourless by transmitted light, with a few scattered warts 6 - 8 µm in diameter.

PLASMODIUM: White.

HABITAT: Decaying wood.
DISTRIBUTION: Cosmopolitan, known from Auckland, Taranaki, Hawkes bay, Nelson, Waikato and Wellington.

NOTES: The most common of the red species found its colour makes it stand out and easier to find.
 
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Macro images:
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Arcyria denudataScale bar 
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 Scale = 1 mm.
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Arcyria denudataScale bar 
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 Scale = 0.3 mm.
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Arcyria denudataScale bar 
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 Scale = 1 mm.
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Arcyria denudataScale bar 
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 Scale bar = 1.6 mm.
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Arcyria denudataScale bar  
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Plasmodium Scale bar = 7 mm.
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Arcyria denudataScale bar  
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Immature fruiting body's Scale bar = 7 mm.
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Arcyria denudata 
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Close up of the capillitium net. Magnification = 400x
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