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. |
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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). |
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Habitat: | Solitary to scattered under mixed or conifer forests, broadleaf forests, especially under Quercus or Fagus. | |||
Distribution: | Japan, Taiwan, China, Korea. |
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References: | Imai R. and Hongo T. 1989; Imai, S. 1938; Mao. 2000. |
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Provided: | E. F. T. Tschen |
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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. | |||