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

Peniophora spathulata Lin et Chen, Taiwania 35: 96. 1990.
   
 
 
 
 
　Description： Macroscopic characters: Basidiocarps resupinate, widely effused, adnate, very thin, 38–100 μm thick, 3 × 5 cm, membranaceous, even to undulate, but cracked by substrata, forming reticulate appearance, drab-gray or pallid mouse gray, turning black in 5% KOH; margins thining out, pruinose, white. Microscopic characters: Basal layer almost none; basal part of the intermediate layer 30–60 μm thick, without clear delimitation to the substrata, yellowish brown, composed of densely interwoven obscure hyphae; upper part of the intermediate layer of context 30–40 μm thick, indistinct, composed of longitudinally interwoven hyphae, mostly masked by ancillary or-gans; hyphae of basal part of intermediate layer 3–5 μm wide, gelatinized, brown, thin-walled, smooth, septate, without clamp connections, interwoven and twisted, distinct hyphae found in substrata; hyphae of the upper part of the intermediate layer 2.5–4 μm wide, thin-walled, smooth, slender, septate, rarely with clamp connections, vertically arranged; cystidia spathulate, mucronate at apex, rather thick-walled, opaque, with narrow lumen, 3–6 μm wide at base, 6–12.5 μm wide at upper portions (including crystals), 35–37.5 μm long, finely encrusted at upper portions, with the crystals dissolved in KOH; basidiospores nar-rowly oblong or suballantoid, slightly curved, 3 × 8 μm, apiculate, thin-walled, smooth, non-amyloid.
 
 
 
 
 
　Specimens：

Taipei Hsien, Mt. Seven-star, on the road side, under the hardwood forests, alt. 700 m, Dec. 6, 1975, S.-H. Lin (Holotype: NTU-4304).
 
 
 
　Habitat： On the dead branches and stems of the broad-leaved trees.
 
 
 
　Distribution：

Taiwan.
 
 
 
　References：

Lin, SH. and Chen, ZC. 1990; Wu, SH. 2002.
   
   
   
　Provided：

S. H. Lin
 
 
　Note： The spathulate cystidium with mucronate apex and narrow lumen is the diagnostic character of the new species. The fructications are very thin and not cracked, although the substrata are strongly cracked. Additionally, the species is characterized by its color, from pallid mouse gray turning to black by 5% KOH solution, and by its brown subiculum which can not be distinguished from the substrata. This species is closely related to Peniophora quercina (Pers.) Cooke and P. cinerea (Pers.) Cooke, and also had been synonymized by Wu (2002) to P. cinerea, but P. spathulata can be distinguished from them by its peculiar cystidia, thin fructification and small size of basidiospores.