Phylum：Basidiomycota　>>　Class： Basidiomycetes　>>　 Order： Polyporales 
   
 
　BCRC Number： NO BCRC Number!  
   
　Scientific Name： Mycoacia copelandoides
 
   
   
　Author：

Mycoacia copelandoides Lin, sp. nov, NTU M.S. Thesis: 1-194. 1976.
   
 
 
 
 
　Description： Macroscopic characters: Basidiocarps resupinate, widely effused, adnate, 200 μm thick not including spines, 4 × 10 cm or more, corneous or ceraceous, grayish white when fresh, dark brown when dry, turning liver brown color in 5％ KOH; margins thining out, pruinose white; spines hydnoid, slant, subulate or cylindrical, acute at apex, 0.29–0.39 × 2.3 mm, 4 per mm. Microscopic characters: Basal layer of context with a few parallel hyphae; the basal part of intermediate layer with densely compact and interwoven hyphae, thin; upper part composed of interwoven hyphae; hyphae 2–3 μm wide, thin-walled, with clamp connections, smooth, very distinct, not gelatinized at all; metuloid cystidia finely encrusted or smooth when crystals dissolved in KOH, cylindrical-fusiform, 10–12.5 × 112 μm, with wall 2.5 μm thick, with pedicels slender, smooth, thick-walled and narrow, immersed in context and trama of spines and protruding 20–30 μm high, having the same radiate orientation as hyphae; hymenial layers 25 μm thick, composed of paraphyses, basidia and metuloid cystidia in dense palisade; basidia narrowly slender, flexuous, 3–4 × 10–22 μm, with 4 basidiospores; sterigmata 2–3 μm long; basidiospores not seen.
 
 
 
 
 
　Specimens：

Taipei Hsien, Doll Valley, on the road side, under the hardwood for-ests, alt. 300–400 m, Dec. 25, 1975, S.-H. Lin (Holotype: NTU-4275).
 
 
 
　Habitat： On the dead stems of the broad-leaved trees.
 
 
 
　Distribution：

Taiwan
 
 
 
　References：

Lin, SH. 1976.
   
   
   
　Provided：

S. H. Lin
 
 
　Note： This new species is characterized by the hydnoid spines, never odontoid, the presence of numerous metuloid cystidia and the consistency of basidiocarps, i.e., waxy or corneous. Consequently I refer it to the genus Mycoacia, and not to Odontia or Basidioradulum. This species is closely allied to M. fusco-atra (Fr. ex Fr.) Donk in having cystidia which are, in general, scarcely present in this genus, but the latter has two kinds of cystidia. It is also similar to M. copelandii (Pat.) Aoshima & Furukawa, but the latter is not provided with cystidia.