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Arcyria denudata

Arcyria denudata


----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. ----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 ( )


Sporocarps erect, often in large colonies, deep red, fading to red-brown, crowded or gregarious, 1-2 mm total height. Sporothecae subglobose, ovoid or cylindrical, erect, 0.5-1 mm diam., expanding to 1(-2) x the original size. Stalk dark or red-brown, 0.5-1.5 mm long, cysts mostly 12-15 µm diam. Capillitium net rather dense, the tubules slender, 3-4 µm diam., usually with coarse half rings arranged in a spiral, elsewhere smooth or minutely warted or with fine subreticulate ridges. Calyculus plicate, usually rather coarsely papillate-reticulate, usually rather small and shallow, funnel-shaped. Spores 6-8 µm diam. minutely, pale-warted and with scattered larger wartlets ( )


Taxonomic position: Kingdom: Myxobiontes Subkingdom: Myxomycetobionti Phylum: Physarophyles Class: Physariodes Order: Trichiales Family: Trichiaceae Species: Arcyria denudata ( )

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Spotted by

Heerlen, Limburg, Netherlands

Spotted on Dec 10, 2011
Submitted on Feb 6, 2012

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