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Literature:
 
Page number:8 
Description type:Non-original description 
Description:ECHINODONTIUM JAPONICUM IMAZEKI. Jap. J. Bot. 11: 520. 1935.
Illustrations. Figures 3 and 16; see also IMAZEKI (1935) and ITO (1955).
Macroscopic. Basidiocarps (Fig. 3) lignicolous, perennial, resupinate to effused-reflexed, woody, 2-15 x 1-4 x 0.5-1 cm, effused up to 15 cm; upper surface Fuscous to Fuscous Black; margin Buffy Olive to Grayish Olive, 1-2 mm wide, acute, undulating, pubescent, under surface warted and fertile; context Grayish Olive to Deep Olive-Buff, firm to woody, zonate (apparent with a hand lens), 1-5 mm thick; hymenophore same color as the context, dentate; teeth adjacent to scattered, subulate, 2-10 mm long, 0.5-1.5 mm in diam, inner tissue the same color as the context, sometimes with a darker core, apices acute to blunt and covered with hymenium.
Microscopic. Context hyphae of two types; skeletal hyphae (Fig. 16e) thick-walled to solid, 3.5-5 µm in diam, smooth, brown, turning darker in KOH solution, rarely nodose-septate, branched; generative hyphae (Fig. 16f) thin-walled, 3.5-5 µm in diam, hyaline, smooth, nodose-septate with secondary simple septa, regularly branched; hyphae of the inner tissue of the teeth similar but frequently branched and frequently nodose-septate; hymenium hyaline; subhymenium stratified, up to 200 µm thick; cystidia (Fig. 16a) club-shaped to fusiform, 30-55 x 6-10 µm, upper portion encrusted, usually protruding up to 20 µm, originally thin-walled and hyaline, becoming thick-walled (Fig. 16b) and colored similar to skeletal hyphae; basidia (Fig. 16c) clavate, 20-25 x 6-8 µm, 4sterigmate; spores (Fig. 16d) ellipsoid, 5.5-7.5 x 4-5 µm, hyaline, amyloid, lightly echinulate to smooth (usually some trace of echinulation under oil immersion).
Rot character. Undetermined. Host. Quercus glauca THUNBERG.
Range. Japan, known from the Prefectures of Nara and Miyazaki. Specimens examined. JAPAN - TYPE - Kasuga-yama, Nara, Japan, on Quercus glauca, IMAZEKI, No. 200301, May 1933 (TNS); Suki-mura, Nisimorokata-gun, Miyazaki, on dead angiosperm branches, IMAZEKI, No. 206837, Aug. 2, 1938 (BPI).
Discussion. The species should be compared with E. ballouii. Reasons for considering the two as different species are given in the discussion for E. ballouii.
 
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