Postia amylocystis  Postia amylocystis is a species of poroid fungus in the family Fomitopsidaceae. Found In China, the fungus was described as new to science in 1994 by mycologists Yu-Cheng Dai and Pertti Renvall. The original type collections were made in the Changbai Mountain Range, where the fungus was found growing on a decayed trunk of Manchurian lime ("Tilia mandshurica"). Characteristics that distinguish "P. amylocystis" from other "Postia" species include thick-walled cystidia in the hymenium, and narrow, sausage-shaped (allantoid) spores. The specific epithet "amylocystis" refers to the amyloid cystidia, and hints at a possible phylogenetic relationship to "Amylocystis lapponica".