Phylum：Basidiomycota　>>　Class： Basidiomycetes　>>　 Order： Polyporales 
   
 
　BCRC Number： NO BCRC Number!  
   
　Scientific Name： Hyphoderma subsetigerum
 
   
   
　Author：

Hyphoderma subsetigerum Sheng H. Wu, Mycologia 89: 137. 1997..
   
 
 
 
 
　Description： Basidiocarp resupinate, effuse, adnate, 70-150 μm thick in section (aculei excluded), membranaceous or submembranaceous. Hymenial surface whitish to ivory yellow, grandinioid, sometimes cracked; margin thinning, concolorous, arachnoid. Aculei usually separate, 3-6 per mm, conical, 70-120 μm diam, up to ca. 150 μm high. Hyphal system monomitic; hyphae nodose-septate. Subiculum with fairly loose texture; hyphae horizontal next to the substratum, variously oriented elsewhere, colorless, fairly rigid, 3-6 μm diam., with 0.5-1 μm thick walls. Septocystidia numerous, the long ones usually located in aculeal center, colorless, 6-10 μm diam, up to ca. 150 μm long. Basidia utriform, 20-30 × 4.5-5.5 μm, 4-sterigmate. Basidiospores cylindrical, adaxially slightly concave, smooth, thin-walled, 6-8 × 2.8-3.2 μm (holotype spore-print: X = 6.92 ± 0.43 × 3.03 ± 0.10 μm, n = 30; Wu 9302-74 spore-print: X = 6.70 ± 0.59 × 2.95 ± 0.09 μm, n = 30), IKI－, CB－.
 
 
 
 
 
　Specimens：

Taiwan. Nantou: Tsuifeng, alt. 2,300 m, on branch of angiosperm, 16 Feb 1993, Wu 9302-74 (TNM); Pilushi, alt. 2,300 m, on branch of angiosperm, 13 Apr 1993, Wu 9304-16 (TNM), Wu 9304-18 (holotype: TNM; isotype: BPI).
 
 
 
　Habitat： null
 
 
 
　Distribution：

Taiwan.
 
 
 
　References：

Wu, SH. 1997.
   
   
   
　Provided：

S. H. Wu
 
 
　Note： This species belongs to the Hyphoderma setigerum group. Hyphoderma setigerum has long been regarded as a species group rather than a single species (e.g., Eriksson and Ryvarden, 1975; Wu, 1990). Morphologically, the length of basidia are variable, also the variation of size and shape of basidiospores are noticeable. Hyphoderma setigerum is distributed worldwide from tropical to cold temperate regions. It implies that this climatic adaptation may be achieved by the processes of genetic modifications, or even speciations have occurred within H. setigerum s.l. Wu (1990) measured basidiospores of numerous specimens of Taiwanese H. setigerum as 7.5-12.5 × 3.5-5 μm, which is distinctly larger than those (6-8 × 2.8-3.2 μm) of H. subsetigerum. However, no other features could be detected as different between H. subsetigerum and H. setigerum. Two specimens of H. subsetigerum (Wu 9302-74 and the holotype) were proved to be compatible. Nevertheless, incompatibilities between holotype of H. subsetigerum and three H. setigerum specimens from Taiwan were respectively obtained in this study.