Search on : Taxa descriptions

 


 
 Add this item to the list  813793 Original description
   
Description type:Original description 
Description:Pileus 1.2–9.2 cm in diameter; when young convex or campanulate, then applanate with low and broad umbo, margin often undulate and inflexed; when young dark brown, then grey-brown or dark brown (S40-50Y50M30, S50Y70M40, S60-70Y50M40, S80Y50M40,), umbo sometimes darker; smooth, at times “frosty” in centre or all over surface; slightly viscid or dry, hygrophanous, margin translucently striate or not. Lamellae often rather narrow, but up to 8 mm broad; emarginate or narrowly adnate; moderately or rather densely crowded; when young greyish or pale grey-brown (Y20M10C10), later with pink tinge (ca.S10Y30M10); edge even or uneven, concolorous or rarely paler. Stipe 4.0–12.0 cm long, 0.7–1.6 cm wide; broadest in the middle or broadening towards base, rarely broadly bumpy and cracked, base usually tapering, sometimes rooting; greyish or white, at times base yellowish; dry, faintly fibrillose, apex pruinose, firm, base white pubescent; stuffed, or apex fistulose. Context in pileus usually dark grey-brown or brown-grey; in stipe concolorous with the surface, at times base yellowish. Smell indistinct or slightly farinaceous at first, when cut distinctly farinaceous. Taste farinaceous. Spores (6.9) 7.0–7.9–8.9 (9.2) × (6.0) 6.1–6.8–7.3 (7.8) µm, total range of mean values 7.8–8.0 × 6.7–6.8 µm, Q = (1.01) 1.03–1.17–1.26 (1.32), total range of mean Q values 1.16–1.19 (60 spores from 3 collections); usually subisodiametrical with 6 angles. Basidia 27–34–38 × 9–10.5–12 µm (n = 25), 4-spored. Cheilocystidia scattered to absent, short, 21–52 × 4–10 µm; cylindrical, flexuous, or clavate; wall often partially thickish. Pileipellis hyphae with internal brown pigment diffuse and as occasional clumps, flecks and small clusters of granules, slight to strong incrustations; terminal cells cylindrical, narrowly clavate or with tapering apex, wall thin or thickish. Stipitipellis: terminal cells often rather short, clavate or cylindrical, rarely subcapitate or apex tapering, usually in bundles, wall thin or thickish. Clamps abundant in all structures. 
Taxon name: