Phylum:Basidiomycota >> Class: Basidiomycetes >>  Order: Boletales 
 BCRC Number NO BCRC Number!  
 Scientific Name: Boletinus asiaticus

Boletinus asiaticus Singer, Rev. Mycol. 3: 164. 1938.

 Description: Pileus 4 – 10.5 cm broad, convex, surface dry, vinous-red or purple-red when old, floccose in the center. Context yellow, unchanging when cut. Context hyphae of pileus 4-6 μm diam., mostly grayish brown with an olive component in KOH. Tubes 0.2 – 0.7 cm long, decurrent, initially yellow, becoming olive-yellow. Pores angular, 0.8 – 1.3 × 1–2 mm wide, radially elongated, concolorous with tubes. Stipe hollow, surface fibrillose, yellow above the remnants of the veil, vinous-red below it. Spore print buff-brown. Spores 9 – 11.5 × 4 – 4.5 μm, fusiform, with one or two drops. Basidia 20 – 33 × 6 – 7 μm, clavate, sterigmata four, 5 – 6 μm long. Pleurocystidia 20 – 32 × 5 – 7 μm, fusiform or ampullaceous, colorless. Cheilocystidia 55 – 89 × 8.8 – 12 μm, agglutinate, clavate, often with red-brown contents. Hymenophoral trama of strongly boletinoid type, with a colored, more compactly interwoven mediostratum and a paler lateral stratum. Clamp connections constant.

Taiwan, Miaoli: Jenshan, alt. 2115 m, 13 Sep 1996, Huang HW. 1666.

 Habitat: Solitary under Pinus taiwanensis Hay. forest.

Taiwan, China, Japan, North America, Europe.


Chen, CM and Yeh, KW. 2000.


C. M. Chen

 Note: There is a great deal of color variation in this species when compared with the specimens from Europe, Japan and China. The surface of pileus is dry even in wet weather and hymenophore is strongly boletinoid. However, this is a very rare fungus with a characteristic blood-colored pileus in Boletinus.