Phylum：Basidiomycota　>>　Class： Basidiomycetes　>>　 Order： Boletales 
   
 
　BCRC Number： NO BCRC Number!  
   
　Scientific Name： Tylopilus albofarinaceus
 
   
   
　Author：

Tylopilus albofarinaceus (Chiu) Tai, Sylloge Fungorum Sinicorum, p.757. 1979.

Basionym: Boletus albofarinaceus Chiu, Mycologia 40: 209. 1948.
   
 
 
 
 
　Description： Pileus 3-5 cm broad, convex to broadly convex; margin incurved slightly and without hymenium for about 1-1.5 mm; surface dry, glabrous, somewhat shiny and tacky to the touch when moist; color white-pulverulent when young, and cinnamon-brown on the disc center when old; context pallid, spongy, unchanging when cut, taste acidulous, odor none. Tubes 7-11 mm long, ventricose and depressed around the stipe, pallid vinicolor to pallid purple-brown. Pores 0.8-1 mm broad, angular, concolorous to tubes or dark vinaceous, unchanging when bruised. Stipe 6-7 cm long, 7-8 mm thick, expanding toward base, surface of young specimens with pruinose ornamentation except its yellowish base, and becoming glabrous with brown fibrils slightly striated toward the base in old specimens. Flesh whitish, fibrous, yellowish to ochraceous yellow at the basal part of the stipe. Spore deposit vina-ceous to vinaceous-brown. Spores 11-14 × 5-7 μm, ellipsoid, smooth, thin-walled, ochraceous yellow in KOH, golden yellow in Melzer,s. Basidia 35-42 × 14-15.5 μm, clavate, thin-walled, with four spores, hyaline in KOH, pale yellow in Melzer,s. Pleurocystidia absent or if present only as ventricose-rostrate pseudocystidia imbedded in the hymenium, which is 21-32 μm long, 6-7 μm broad at the bottom. Tube trama bilateral. Mediostratum 20-30 μm thick with a color on comparatively compact mediostratum and exterior to its hyphae diverging to subhymenium. Epicutis of pileus like a loosely interwoven pellicle, hy-phae gelatinous and 3-4 μm in diameter, yellowish to hyaline. Clamp connections absent.
 
 
 
 
 
　Specimens：

Taiwan, Chiayi: Da-Tung-Shan, alt. 1,500 m, 14 Jun 2002, Chen CM. 3240.
 
 
 
　Habitat： Solitary under broad-leaved forest.
 
 
 
　Distribution：

Taiwan, China (Yunnan, Guizhow).
 
 
 
　References：

Chen, CM et al. 2004.
   
   
   
　Provided：

C. M. Chen
 
 
　Note： The distinguishing features of T. albofarinaceus are the white-pulverulent caps when young and enlarged downward stipes with yellowish area at its base. This species is closely related to Tylopilus javanicus P. Henn. that also has the glabrous cap, but its stipes are equal in length and flesh of its caps has a mild sweet taste.