Phylum：Basidiomycota　>>　Class： Basidiomycetes　>>　 Order： Polyporales 
   
 
　BCRC Number： NO BCRC Number!  
   
　Scientific Name： Hyphodontia rimosissima
 
   
   
　Author：

Odontia rimosissima Peck, Ann. Rep. N. Y. State Mus. 50: 114. 1898.
   
 
 
 
 
　Description： Hyphodontia rimosissima (Peck) Gilb., Mycologia 54: 667. 1962. (Schizoporaceae) Macroscopic characters: Basidiocarps resupinate, effused, adnate, 70–120 μm thick, pelliculose, even, odontoid, not cracked, marguerite yellow; margins thining out, concolorous; spines cylindrical, 300 μm wide at base, 400–700 μm high, with fimbriate sterile encrusted hyphoid cystidia at tips. Microscopic characters: Basal layer almost non; intermediate layer 50–70 μm thick, composed of loosely longitudinally interwoven hyphae; hyphae 2–2.5–(3) μm wide, thin-walled, smooth or encrusted, with clamp connections; cystidia cylindrical, loosely encrusted, protruding, 3 μm wide, distributed in the tips of spines and hymenium; paraphyses subclavate and constricted, staining dark red in phloxine, 4 μm wide, thin-walled, numerous at hymenium; spines cylindrical, with densely conglutinized hyphae in trama, apex truncate and with fimbriate sterile hyphae (cystidia); hymenial layer 50 μm thick, turning deep blue in aniline blue; but hymenium not sharply differentiated from the loosely arranged subhymenium and context, ascending toward the truncate apex of spines; basidia clavate, 3.5–4 × 14 μm , with 4 basidiospores; sterigmata 3–4 μm long, 0.5 μm wide at base, curved; basidiospores broadly ellipsoid or subglobose, 3.2–3.5 × 4–4.5 μm, thin-walled, smooth, 1-guttulate, non-amyloid.
 
 
 
 
 
　Specimens：

Kaohsiung Hsien, the Southern Cross-Island Highway, Tutsang 104K, under the Taiwan hemlock forests, alt. 2600 m, Jan. 25, 1975, S.-H. Lin (NTU-2355).
 
 
 
　Habitat： On the dead trunk of Tsuga chinensis Pritzel var. formosana (Hay.) Li et Keng.
 
 
 
　Distribution：

North America, Japan and Taiwan.
 
 
 
　References：

Lin, SH. and Chen, ZC. 1990.
   
   
   
　Provided：

S. H. Lin
 
 
　Note： Judging from the description and figures of Odontia rimosissima Peck. (Furukawa, 1974), we treat our material under this taxon. However, there are some characters which do not coincide with the description of Furukawa, for instance, the texture of the fruit bodies from Taiwan is floccose or pelliculose, while that from Japan is membranaceous. Our mate-rial is also similar to Hyphodontia breviseta in some respects.