Russula delica Fr., Epicrisis systematis mycologici (Uppsala): 350. 1838 1836.
Description：
Cap 3-15 cm broad, convex, expanding to near plane to infundibulate; margin decurved when young, upturned at maturity, usually irregularly undulating. Surface dry, rarely subviscid when wet, not striate. White to dull white with dull yellow-brown, cinnamon or russet stains, glabrous or somewhat woolly. Flesh is thick, firm and brittle, white. Gills decurrent, very close, sometimes forked, rare lamellulae. White to dingy white, gill edge dotted with small brown or russet spots, unchanging color when bruised. Stipe 1-5 × 0.8-2 cm, cylindrical, central, solid, soft, thick, smooth, white or cream color, fragile, solid. Unchanging color when exposed. Odor and taste: Mild, odor of fresh cut grass. Cystidia clavate to fusoid, with elongated, rostrate, about 60-150 × 6-15 μm. Spore print white. spore 7-9 × 5-7 μm, globose or subglobose, with prominent warts, sometimes with ridge and incomplete reticulum.
Specimens：
Taiwan, Nantou: Guandaushi Forest Forest (Hui-Sun Forest Station), alt. 500 m, under mixed coniferous-broadleaf forest, 29 Mar 2000, R89032913 (TNM); Guandaushi Forest Forest (Hui-Sun Forest Station), alt. 500 m, under mixed coniferous-broadleaf forest, 12 Jul 2000; R R89071206 (TNM), Guandaushi Forest Forest (Hui-Sun Forest Station), alt. 500 m, under mixed coniferous-broadleaf forest, 12 Jul 2000, R89071208 (TNM); Nantou, Chilaishan, alt. 700 m, 21 Jun 1995, F3472 (TNM).
Habitat：
Solitary to scattered, less frequently in mixed hardwood or conifer forests.
Distribution：
Japan, China, Taiwan; Widespread in Europe, North America and Mexico.
References：
Imai R. and Hongo T. 1989; Courtecuisse R. 1999.
Provided：
E. F. T. Tschen
Note：
Edible and good. This species appears quite similar to R. hepanica Hongo. and can be distinguished from it by having small brown or russet spots on gill edge and stipe.
Phylum：Basidiomycota >> Class： Basidiomycetes >> Order： Russulales 
BCRC Number：