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 Add this item to the list  Sporotrichum versisporum (Lloyd) Stalpers
   
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Page number:28 
Description type:Non-original description 
Description:Sporotrichum versisporum (Lloyd) Stalpers
On the natural substrate, conidia are found in the mycelium in the wood, where they develop in wood vessels, within or rarely on relatively thick fertile basidiomata, where they are found in the upper layers close to the point of attachment to the substrate (conidia are usually absent in flattened basidiomata) or in tube-less, more or less tuberous conidiomata (de Seynes, 1888). Such conidiomata can be considered as abortive basidiomata. Both blastoconidia and chlamydospores are found, and distinction between them after maturation is often not possible.
Both de Seynes (1888) and Jahn (1970) described the development of the tuberous conidiomata. I have only seen mature specimens, but as no recent English description exists and both publications are not generally available, it seems useful to summarize these descriptions here.
Young conidiomata are tuberous and Bovista-like to irregularly console-shaped with blunt margins and an upper surface which is smooth to coarsely warted or knotted. Pores are absent or rarely indicated as pits. The conidiomata are 3-7 cm diam and 2-5 cm thick, pale yellow to sulphur yellow, sometimes with reddish exudation drops. Later the colour changes to yellowish brown and finally becomes cinnamon-brown. Young conidiomata have a texture which is comparable to that of young basidiomata, but mature ones become pulverulent and consist of a brown mass of globose to ellipsoidal conidia and chlamydospores, 7.5-20 x 6-15 µm and thick-walled pieces of hyphae.
 
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