Phylum：Basidiomycota　>>　Class： Basidiomycetes　>>　 Order： Polyporales 
   
 
　BCRC Number： NO BCRC Number!  
   
　Scientific Name： Peniophora ravenelii
 
   
   
　Author：

Membranicium ravenelii (Cooke) Hayashi, Bull. Gov. For. Exp. Sta. No. 260: 71. 1974.

Peniophora ravenelii Cooke, Grevillea 8: 21. 1879.
   
 
 
 
 
　Description： Macroscopic characters: Basidiocarps resupinate, widely effused, adnate, 110–175 μm or 400–450 μm thick, 3 × 3 cm, ceraceous, even, farinose, finely cracked, smoked gray or gray with a tint of pink when thin, or pale ochraceous-buff to warm buff when thick, turning pur-ple or vinaceous-purple while the warm buff surface in 5% KOH; margins thining out, pru-inose, white. Microscopic characters: Thickening of basidiocarps by repetitive longitudinally interwoven hyphae of intermediate layer, in 2–3 strata, yellowish brown; basal layer of context almost none; intermediate layer of context composed of longitudinally interwoven hyphae, gelati-nized and compact; hyphae 2–3 μm wide, thin-walled, septate, without clamp connections, smooth, with the short cells; cystidia fusiform, 7.5–10 × 17.5–20 μm, rather thick-walled, with walls up to 3 μm wide, capillary lumen 1 μm wide, finely encrusted, crystals dissolved in 5% KOH, cystidia conical at apex, some arranged in tiers, some scattered, immersed and protruding; hymenium 12–15 μm thick, dense in palisade; paraphyses subclavate, 3–5 μm wide; basidia slender, clavate, 3.5–4 × 15 μm, with 4 basidiospores; sterigmata slender, up to 5 μm long; basidiospores not seen.
 
 
 
 
 
　Specimens：

Taipei Hsien, Mt. Seven-star, on the road side, under the hardwood forests, alt. 700 m, Dec. 6, 1975, S.-H. Lin (NTU-3852).
 
 
 
　Habitat： On the rough branches of dead broad-leaved trees.
 
 
 
　Distribution：

North America, China, Japan and Taiwan.
 
 
 
　References：

Lin, SH. 1976.
   
   
   
　Provided：

S. H. Lin
 
 
　Note： The surface color and its changing to purple or vinaceous purple in KOH and the yel-lowish brown sections are the diagnostic characters of the species. The basidiocarps of the collection much thicker than those of Japanese species described by Hayashi.