page_title: Roridomyces austrororidus
section_title: Habitat and distribution
hierarchical_section_title: Roridomyces austrororidus / Habitat and distribution
caption_attribution_description: Roridomyces austrororidus Location: Kaipara harbour, Auckland, New Zealand. Notes: On a fallen and rotten branch of Leptospermum scoparium in native New Zealand bush.
context_page_description: Roridomyces austrororidus, commonly known as the austro dripping bonnet, is a species of agaric fungus in the family Mycenaceae. Described as new to science in 1962 by American mycologist Rolf Singer, it is found in South America, New Zealand, and Australia, where it grows on rotting wood.
  The fruit bodies have several distinguishing characteristics that facilitate identification, including thick, white, mucilaginous stipes, and white to pale cream, convex caps that measure 1–2 cm. The gills are white, widely spaced, and have a fused or decurrent attachment to the stipe. Spores are smooth, ellipsoid, and measure about 9–15 by 6–9 micrometres. The smooth and white stipes are 4–6 cm long and 0.1–0.2 cm thick, and covered with a thick coating of gluten.
context_section_description: Like all members of its genus, Roridomyces austrororidus grows as a saprophyte on rotting wood. In Australia, the fungus fruits in clusters or groups on rainforest trees, decayed logs, fallen Eucalyptus branches, Bedfordia salicina logs and branches, and Nothofagus cunninghamii logs. Fruiting usually occurs after rainy periods from April to June, although the mushroom has also been collected in August. New Zealand collections have been reported to grow on Pinus, Leptospermum, and Ripogonum. A study of fungal succession in a wet eucalypt forest in Tasmania demonstrated that R. austrororidus prefers mature forests (with at least 70 years of growth since the last wildfire), and fruits on small diameter wood—typically twigs with a width less than 15 mm (0.6 in).
  Roridomyces austrororidus occurs in Argentina, Chile, New Zealand, and Australia. Its Australian distribution includes Queensland, New South Wales, Victoria, Tasmania and Western Australia. Australian mycologist Tony Young suggests that the geographical distribution of the fungus indicates that its ancestor may have originated from the ancient continent Gondwana.
caption: Fruit bodies grow on decaying wood.
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