Coniophora puteana

• Mycelium – first whitish-yellow, later yellowish-brown.
• Strands – yellowish-brown at first, later dark brown.
• Sporophore - creamy-yellow at first, later olive-brown with a creamy margin.
• Individual spores – 0.01mm long and pale yellow-brown. Bulk spores – olive–brown.
• The growing body of microscopic threads (known as hyphae) invade the cells of the wood to form a vegetative surface (or mycelium).
• Strands may be thick and felted on wood and extensive on walls.
The sporophore formed strands of thin, plate-like skin with smooth irregular bumps.
• This may attack timber in buildings where there has been serious water ingress, through such things as leaking roof tiles, broken guttering, failed plumbing and rising damp.
• It is also a common cause of decay in external painted joinery and other timbers.