Phylum：Basidiomycota　>>　Class： Basidiomycetes　>>　 Order： Russulales 
   
 
　BCRC Number： NO BCRC Number!  
   
　Scientific Name： Gloeocystidiellum tabacinum
 
   
   
　Author：

Gloeocystidiellum tabacinum Sheng H. Wu, Mycotaxon 58: 45. 1996.
   
 
 
 
 
　Description： Basidiocarp resupinate, effuse, adnate, ceraceous or subceraceous, 80-300 μm thick in section, sometimes composed of two growth layers. Hymenial surface light brown, smooth, occasionally cracked; margin thinning or rather determinate, concolorous. Hyphal system monomitic; hyphae nodose-septate. Subiculum fairly uniform, composed of a thin basal layer with fairly dense texture, or composed of a medullary layer with fairly loose texture; hyphae colorless, 2.5-5 μm diam., with walls to ca. 1 μm thick. Crystal masses scattered or crowded in subiculum. Hymeniumdistinctly thickening, differentiated from subiculum, with compact texture; hyphae mainly vertical, colorless, 1.5-3 μm diam., thin-walled. Gloeocystidia numerous, mostly immersed, cylindrical or tubular, slightly flexuous, with yellow or orange yellow oily contents, 6-12 μm diam., up to ca. 120 μm long, with 1-2 μm thick walls, SA+. Basidia subclavate, 18-28 × 4-5 μm, 4-sterigmate. Basidiospores ellipsoid, adaxially slightly concave, verrucose (smooth in KOH), thin-walled, 5-6.2 × 2.9-3.3 μm, IKI bluish black, CB–.
 
 
 
 
 
　Specimens：

Taiwan. Yilan: Fushan Nature Reserve, alt. 600 m, on branch of angiosperm, 3 Sep 1992, Wu 9209-19 (TNM, holotype; isotype: BPI).
 
 
 
　Habitat： null
 
 
 
　Distribution：

Known only from Taiwan.
 
 
 
　References：

Wu, SH. 1996.
   
   
   
　Provided：

S. H. Wu
 
 
　Note： This new species is microscopically similar to Gloeocystidiellum compactum and G. formosanum, but differs from the former in having narrower basidiospores, and contrasts with the latter in having shorter basidiospores. In addition, the subiculum of the above two species consists of a thin basal layer, while that of G. tabacinum is sometimes composed of a medullary layer of fairly loose texture.