Micromorphology of decayed wood.

Tangential section (A) and scanning electron micrographs of transverse sections (B and C) from wooden objects with wood degradation A) Type I soft rot in wood cells of Cedrus showing cavities that form inside the tracheid secondary walls. Soft rot cavities spiral within the cells. B) Small cavities are evident within the cell walls of the tracheids. C) An unknown hardwood with Type I soft rot and cavities within the secondary cell walls and also Type II soft rot causing an erosion of the entire secondary wall. Only a fragile middle lamella remains in some cells. Weakened sells appear distorted and some have collapsed. Scale bar = 50μm.