an Armillaria sp. was collected on Amami-Oshima.
The morphological characteristics of the basidiocarp
were distinct from all previously reported species from the
warm-temperate to boreal regions of Japan. Recently,
sequences of elongation factor-1 alpha (EF-1a) gene and
ribosomal DNA (rDNA regions) [internal transcribed
spacer (ITS) and intergenic spacer-1 (IGS-1)] have been used for phylogenetic studies of Armillaria spp.