 The cap cuticle comprises a layer of densely interwoven, sightly gelatinized, filamentous hyphae that are 3–8 µm in diameter.The stem tissue is made of sparse, thin, longitudinally oriented hyphae measuring 294 by 39 µm.The fruit bodies of "Amanita kotohiraensis", a species known only from Japan, bears a superficial resemblance to "A. abrupta", but "A. kotohiraensis" differs in having scattered floccose patches (tufts of soft woolly hairs that are the remains of the volva) on the cap surface, and pale yellow gills.