Phylum：Basidiomycota　>>　Class： Basidiomycetes　>>　 Order： Boletales 
   
 
　BCRC Number： NO BCRC Number!  
   
　Scientific Name： Strobilomyces confusus
 
   
   
　Author：

Strobilomyces confusus Sing., Farlowia: 2: 108. 1945.
   
 
 
 
 
　Description： Pileus 3-8 cm broad, convex, the center flattened when old, dry, surface with a covering of rigid, acute, erect spines which are denser toward the center. The spines occasionally evanescent, and then the pileus appearing areolate-squamose. Context whitish, quickly reddening and reaching a deep carrot color when cut, finally changing blackish. Tubes 1-1.8 cm long, slightly depressed around the stipe, whitish-gray to gray, blackish with age. Pores 1-1.5 mm wide, angular, usually sublamellate near the stipe, concolorous with tubes, becoming spotted with cinnamon when bruised, then changing to deep chocolate and finally black. Stipes 4-8 cm long, 1-2 cm broad, solid, tapering downward, gray and black, reticulate at the apex above the remnants of the veil, shaggy-woolly below it. Spore print fuscous. Spores 11-13 × 10.5-12 μm, short-ellipsoid to globose, exosporium ornamented coarsely tuberculate, 1-2 μm deep, often confluent and subcristate, incompletely connected with each other to form a fragmentary network. Basidia 40-45 × 16-20 μm, clavate, sterigmata four, 7-8 μm long. Pleurocystidia 56-84 × 16-22 μm, fusoid-mucronate, sometimes clavate-mucronate or vesiculose with ampullaceous neck, brown in KOH. Cheilocystidia 35-43 × 17-21 μm, fusoid-ventricose or subfusoid-clavate, hyaline to pale fuscous contents, thin-walled. Hymenophoral trama of bilateral type with a colored, more compactly interwoven mediostratum and a paler lateral stratum. Clamp connection absent. Tips of the warts of strands of parallel hyphae which are brown, 25-121 × 10-32 μm broad and wall measuring 1 μm thick in KOH.
 
 
 
 
 
　Specimens：

Nantou: Shanlihsi, alt. 1750 m, July 21, 1994. Chen Chien-Ming (611).
 
 
 
　Habitat： Solitary to scattered in the broad-leaved forest.
 
 
 
　Distribution：

Taiwan, China (Guizhou, Sichuan), Japan, North America.
 
 
 
　References：

Pegler, D.N. 1981; Chen, CM et al. 1998.
   
   
   
　Provided：

C. M. Chen
 
 
　Note： The major difference between Strobilomyces confusus and S. floccopus is in the spore morphology. S. floccopus has a reticulate spore wall (Fig.18 ), while S. confusus (Fig.17) has quite rough, relatively long irregular projections. Spores of S. polypyramis Hooker in Berk. are similar to those of S. confusus, but the former are larger and more sparse for exosporial tuberculate than the latter (Pegler, 1981).