Phylum:Basidiomycota >> Class: Basidiomycetes >>  Order: Russulales 
   
 
 BCRC Number NO BCRC Number!  
   
 Scientific Name: Russula senecis
 
   
   
 Author:

Russula senecis Imai, J. Fac. Agric. Hokkaido (imp.) Univ. 43: 344. 1938.

   
 
 
 
 
 Description: Pileus 4-10 cm broad at maturity, subglobose to convex when young, plano-convex to plane, usually with a broad depression on the disc with age, margin decurved, entire, warted striate and tuberculate. Cuticle not easily seperable from the context, cracking up into patches near margin; surface rugged, dry or subviscid; color orchraceous-tawny, yellowish tan to dark brownish yellow on the disc, unchanging color when exposed; context 1-5 mm thick, pale yellow to dull yellow. Smell very strong, unpleasant. Taste very acrid. Gills adnate or adnexed, closed; dull yellow colored, edge of the gill with fine brown spots. Stipe 2-6 × 0.4-0.8 cm, equal cylindrical or slightly fusoid elongated, sometimes tapered towards the base dull yellow, dull brown or cinnamon-brown, with fine dark brown warts; hollow; unchanging color when exposed. Cuticle with numerous septate clavate pileocystidia and scattered free hyphal tips. Cystidia fusoid, or elongated fusoid, about 80-120 × 15-25 μm. Spore print white. spore 7.5-9 × 7-9 μm, subglobose to ovoid, ornamentation composed of prominent warts, sometimes with ridge, warts 2-3 μm high.
 
 
 
 
 
 Specimens:

Taiwan, Nantou: Hohuanshan, alt. 2500 m, under conifer forest, 10 Aug 2001, R90081004 (TNM); Hohuanshan, alt. 2500 m, under conifer forest, 10 Aug 2001, R90081029 (TNM).

 
 
 
 Habitat: Solitary to scattered under mixed or conifer forests, broadleaf forests, especially under Quercus or Fagus.
 
 
 
 Distribution:

Japan, Taiwan, China, Korea.

 
 
 
 References:

Imai R. and Hongo T. 1989; Imai, S. 1938; Mao. 2000.

   
   
   
 Provided:

E. F. T. Tschen

 
 
 Note: Toxic, but a potent agent with anti-tumor activity (Mao, 2000). This species had been described only in Asia, but Singer (1986) considers R. senecis Imai and R. illota Romagnsi both probably conspecific with R. punctipes Sing.