Serpula himantioides due to a lack of any above ground symptoms of disease. Signs of the pathogen include basidiospores, and fungal masses that are generally dark brown and membranous in the center but become thin white mycelium towards edges of the mass. The brown cubical rot caused by "S. himantioides" resembles the rots of "Phaeolus schweinitzii" and "S. lacrymans". "Serpula himantiodes" is a pre-harvest pathogen that exerts economic impact on lumber supply. It is considered the wild sister species of "S. lacrymans", the pathogen that causes dry rot in wooden building structures. "S. himantioides" is studied most frequently in the context of
Atromentic acid compound to p-hydroxyphenylacetic acid and oxalic acid. Atromentic acid Atromentic acid is a red-organge pigment found in fungi within the Boletales group. It is the precusor to variegatic acid and xerocomic acid, and is preceded by atromentin. As an example, it is isolated from "Serpula lacrymans". It is soluble in methanol. Variants include homoatromentic acid. This pigment has been studied and elucidated by Wolfgang Steglich and colleagues over decades . When atromentin is oxidised with hydrogen peroxide a yellow product is produced. A sodium hydroxide solution is also yellow, but when this is neutralized with acid the red atromentic acid