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

Hyphodontia crassa Lin et Chen, Taiwania 35: 81. 1990.
   
 
 
 
 
　Description： Macroscopic characters: Basidiocarps resupinate, widely effused, adnate, 1.5–5 × 3–16 cm, 300 μm or 1–1.5 mm thick, soft, membranaceous, sometimes separable, white, naphthalene yellow, ivory yellow, cream color or marguerite yellow, not changing color in 5% KOH, uneven, covered with dense granules in various connection at base, not cracked; margins thining out, distinctly pruinose or arachnoid, white or concolorous; spines odontoid, from short to very long, aggregated without definite shapes, dense, about 60 μm wide, 120 μm high. Microscopic characters: Basal layer of context 75–100 μm thick, composed of very loosely interwoven distinct hyphae; intermediate layer of context including spines 200 μm thick, conglutinized by crystals and forming a black zone of context, composed of very densely longitudinally interwoven indistinct encrusted or smooth hyphae; hyphae with two kinds; the one thick-walled, 5 μm wide, with wall in 2 μm thickness, without or with rare clamp connections, smooth, slightly to densely encrusted; the other hyphae thin-walled, 3–5 μm with numerous clamp connections, seemingly arising from the extension of the end of thick-walled hyphae often having intermediate thick-walled hyphae; chlamydospores thin- or thick-walled, elliptical or globose, easily stained by phloxine, 3–7.5 μm in diam., arising from the tips of thin-walled hyphae, scattered and immersed in the context when mature, sometimes with scars of abscission zones; cystidia cylindrical, loosely or densely encrusted in long distance, 4–7.5 × 112.5 μm, 3–5 μm wide when excluded crystals, protruding, straight, rounded at apex, forming spines in fimbiate manner at tips; basidia cylindrical or subclavate, 3–3.5 μm wide, with 2–4 basidiospores; basidiospores ovoid, 4 × 4.5–5 μm, smooth, thin-walled, sometimes guttulate, apiculate, non-amyloid.
 
 
 
 
 
　Specimens：

Taipei Hsien, Pinlin Hsiang, from Orchid Valley to Mt. Suchuangro, under the hardwood forests, alt. 400–500 m, near a cement bridge, on the road side, Dec. 7, 1975, S.-H. Lin (NTU-3155, Holotype: NTU-3141); Taipei Hsien, Wulai Hsiang, Doll Val-ley, along the road side, under the hardwood forests, alt. 300–400 m, Dec. 25, 1975, S.-H. Lin (NTU-4270).
 
 
 
　Habitat： On dead stems of broad-leaved trees.
 
 
 
　Distribution：

Taiwan.
 
 
 
　References：

Chen, ZC. and Lin, SH. 1977; Lin, SH. and Chen, ZC. 1990.
   
   
   
　Provided：

S. H. Lin
 
 
　Note： Macroscopically this new species is characterized by having amorphous spines. In general, the spines are subulate or cylindrical, but often fused side by side and forming the spathulate to irpiciform fence-like processes. This species is closely related to Hyphodontia spathulata (Schrad.) Parm., Hyphodontia barba-jovis (Bull.) J. Erikss., or Hyphodontia verruculosa J. Erikss. et Hjortst. However, it can be distinguished from these allied species by thin- to thick-walled, encrusted hyphae and cystidia as well as presence of the chlamy-dospores.