Cap 4-8 cm broad, globose or convex, expanding to broadly convex or plane to depressed when mature; surface moist, slightly viscid, rare dry, smooth. Margin incurved to decurved when young, strong sulcate tuberculate; cuticle separable up to 2/1 the distance to the disc; Color pale ocher, ocher, grayish yellow to brown; context thick, dull white to dark ocher, unchanging color when exposed. Gills adnate to slightly adnexed, broadly, close, forks rare; pale yellow, become darker with age; gill edge smooth, dotted with small brown or brownish spots. Stipe 1-1.5 × 4-6.5 cm, cylindrical, stuffed when young, hollow with age, firm, glabrous, dull white to light brown; context whitish, unchanging color when exposed. Odor unpleasant, smell of burnt feather or fetid. Taste nauseated, becoming very acrid. Cuticle hyphae elongated, with branching clusters, septate; pileocystidia rare, battle shaped. Cystidia cylindric to cylindro-fusoid, with small head like or rounded terminal appendages. Spore print cream. spore 7.5-9.5 × 7-8.5 μm, globose or subglobose, with prominent warts with ridge or reticulum, sometimes isolated warts; warts 1-2 μm.
Specimens：
Taiwan, Nantou: Guandaushi Forest (Hui-Sun Forest Station), alt. 500 m, under mixed coniferous-broadleaf forest, 20 Mar 2000, R89032018 (TNM); Nantou: Hohuanshan, alt. 2500 m, under conifer forest, 10 Aug 2001, R90081009 (TNM).
Habitat：
Solitary to scattered, less frequently in mixed hardwood or conifer forests.
Distribution：
Japan, China, Taiwan, Europe, North America and North Africa.
References：
Imai R. and Hongo T. 1989; Courtecuisse R. 1999.
Provided：
E. F. T. Tschen
Note：
This species appears quite similar to a European species, R. fragrantissima Romagn. (Theirs, 1997) and can be distinguished from the latter by having burnt feather or fetid odor and different spore ornamentation.
Phylum：Basidiomycota >> Class： Basidiomycetes >> Order： Russulales 
BCRC Number：