Phylum:Basidiomycota >> Class: Basidiomycetes >>  Order: Boletales 
 BCRC Number NO BCRC Number!  
 Scientific Name: Austroboletus subvirens

Basionym: Porphyrellus subvirens Hongo, Acta Phytotaxon. Geobot. 18: 110. 1960.

Austroboletus subvirens (Hongo) Wolfe, Bibl. Mycol. 69: 125. 1979.

 Description: Pileus 4-8 broad, hemispheric to convex, surface somewhat pruinose to velvety, margin incurved when young with narrow sterile belt, viscid when wet, dark green or olivaceous in youth, then green tinged yellowish in age, surface often cracked and becoming rimose-areolate. Context white, soft, bitter in taste. Tubes depressed around stipe, white at first then purple brown tinged red in age. Pores circular to angular, 0.5-1 mm broad, whitish tinged green at first then becoming concolorous with tubes. Stipe 4-11 cm long, 5-1.5 cm thick, subequally or equal, surface yellowish with raising longitudinal reticula, reticulum green to olivaceous and viscid when wet, with white mycelium around base. Spore print vinaceous browm. Spores 13-19 × 6-8 μm, fusiform in face view, with warts and ridges on surface. Basidia 32-38 × 14-18 μm, clavate, sterigmata 2 or 4, 4-5 μm long. Pleurocystidia 23-30 × 9-11 μm, ventricose or fusoid-ventricose. Tube trama of phylloporoid type.

Taiwan, Taichung: Takeng, alt. 750m, 7 Jun 1995, Huang HW. 1169.

 Habitat: Scattered under Cyclobalanopsis glauca (Thunb.)Oerst..

Taiwan, China(Fanjing, Yunnan), Japan, New Guinea.


Horak, E. 1980; Zang, M. 1985; Chen, CM et al. 1997.


C. M. Chen

 Note: A. subvirens has been found that symbiotic associations among Castanopsis Spach., Quercus L., Lithocarpus Bl.. Horak (1980) had predicted that this species should happen in China according to its ecological surroundings. So it was known from China (Zang, 1985). Now it extends southward to the central part of Taiwan.