Phylum:Basidiomycota >> Class: Basidiomycetes >>  Order: Stereales 
 BCRC Number NO BCRC Number!  
 Scientific Name: Stereum ostrea

Stereum ostrea (Bl. et Nees) Fr., Epicr. P. 547. 1838.

 Description: Basidiocarp annual, effused-reflexed to dimidiate or laterally sessile, coriaceous to leathery. Pileus tomentose, concentrically zonate, yellow and grey in concentric bands. Hymenial surface cream yellow to yellow ochraceous, smooth. Hyphal system dimitic, skeletal hyphae 5-8 μm wide, sparsely branched, aseptate, thick, generative hyphae 2-4 μm wide, clamps absent. Tomentose hyphae 3-6 μm wide, unbranched to rarely branched, distantly septate, usually with retraction septa. Cystidiate hyphae 6-10 μm broad, cylindrical to hyphoid with curve into the hymenium, unbranched, aseptate, the walls subhyaline, thick, leaving a capillary lumen except at the top where it broadens gradually. Basidiospores ellipsoid, minutely apiculate, the walls hyaline, smooth, thin and IKI-, 5.5-7.5 × 2-3 μm.

Taiwan, Taipei : Wulai, alt. 300 m, on decayed hardwood, Sep 1991, TFRI 110.

 Habitat: Lignicolous causing white rot of wood.



Chang, TT. 1992a.


T. T. Chang

 Note: The fungus is recognized by its smooth hymenophore and yellow to grey pileus.