|Common Name||none (waterfall fungus*)|
|Genus/Species||Cudoniella clavus (Alb. & Schwein., 1805) Dennis (1964)|
|Abundance||Although to date I am the only one to have recorded this species in Australia it is probably not rare. I have only seen it in Victoria but it is a common species of Europe and also found in North America.|
|Distribution||Found in the Yarra Ranges, Dandenong Ranges and Otway Ranges. Probably more widespread.|
|Usually found in wet forests on very old hardwood that is partially submerged or under a constant shower from a waterfall or partially or completely submerged.|
|Description||This is a freshwater fungi species that grows on organic material, such as wood, near the surface of water (sometimes under water or in splash zones). It has a relatively thick stem typically 5–10mm tall and a wider cap as shown. They have a fairly uniform creamy white color all over but the stem is often coated in mud.|
|Observations||I first saw this fungus while spotlighting for invertebrates
at waterfalls during spring of 2014 and have kept my eye out for them since.
Although I have searched these same places during autumn I have only seen this species during spring and summer.
The wood they grow on is possibly old Eucalyptus and needs to be wet and
I have mostly encountered it at waterfalls where they are out of the water but continually being rained upon.
The small log that they were growing on in the Otways (see this
photo) was half submerged and the fungi were fruiting both above the water line and underneath flowing water.
Because of where I found it originally I called these th e"waterfall fungus" before I knew their genus.|
While sifting through images on ALA I found a photo of a Cudoniella species (identified to genus level) that looks similar to these things I found at waterfalls. Searching the web for more images of this genera I came across Cudoniella clavus, which occurs overseas and apparently is quite common. There was one record for this species on ALA, although no date or location details are available. The collector of that specimen is recorded as Johann Baptist von Albertini (1769-1831), so a bit before my time. He was based around central Europe (Germany), which is probably where the specimen on ALA actually comes from (and the species for which he was co-author). It is possible that local specimens are the same species and were introduced to Australia with European settlement or that this is an Australian (or Australasian) endemic, in which case it would be a different Cudoniella species of course, so the identity of Cudoniella clavus is tentative until such time as an expert is able to examine Australian specimens.
In November 2016 Jurrie & Virgil Hubregtse examined some specimens from Sherbrooke Falls and determined "All of the microscopic features that I examined were in agreement with the published literature."
|Links||WikiPedia has limited information.|