 Description： |
Basidiocarp resupinate, effuse, somewhat loosely attached to the substratum, membranaceous, 150-300 μm thick in section. Hymenial surface pale yellow, smooth, occasionally cracked; margin usually paler, thinning, filamentose-pruinose, with marginal cordons. Hyphal system monomitic; hyphae simple-septate. Subiculum fairly uniform, composed of medullary layer, with loose texture; hyphae fairly straight, distinct, sparsely ramified, loosely interwoven, colorless or subcolorless, sometimes brown-tinted near substratum, 3-6 μm diam., with 0.5-1.2 μm thick walls, occasionally with secondary septa. Hymenial layer distinctly differentiated from subiculum, thickening, with compact texture; hyphae mainly vertical, colorless, narrower than those of subiculum, thin- or slightly thick-walled. Gloeocystidia numerous, mostly of subiculum origin, rarely emergent, tubular or cylindrical, with stalked bases, flexuous, sometimes moniliform, subcolorless or slightly yellow, occasionally orange-yellow or brown-yellow, up to ca. 200 μm long, 7-14 μm diam., thin- or slightly thick-walled, usually with thicker walls at bases, occasionally with secondary septa near bases, SA+. Encrusted cystidia numerous, overlapping in hymenial layer, immersed or emergent, colorless, subulate or conical, apically encrusted (encrusting crystals dissolve gradually but not completely in KOH), 25-45 × 6-12 μm (encrustation included), with thin to ca. 1 μm thick walls. Basidia subclavate, 18-30 × 5-6.3 μm, 4-sterigmate. Basidiospores broadly ellipsoid or subglobose, aculeate (smooth in KOH), thin-walled, with a distinct apiculus, (4-) 4.2-4.6 (-4.8) × 3-3.5 (-3.7) μm, usually with a big oil-drop, IKI bluish black, CB–. |
| Specimens： |
Taiwan. Nantou: Hsitou, alt. 1,250 m, on bark and decorticated trunk of dead Cryptomeria japonica, 10 Oct. 1991, Wu 911010-8 (TNM, holotype; isotypi: K, H). |
Phylum：Basidiomycota >> Class： Basidiomycetes >> Order： Russulales