Search on : Taxa descriptions

 


 
 Add this item to the list   803537 Original description
   
Remarks (public):Entoloma brunneosquamulosum is characterized by a distinctive set of features such as medium to large tricholomatoid basidiomata with a nonhygrophanous conic, becoming convex to plano-convex pileus with a subacute/subobtuse umbo, and the surface is covered with appressed to recurved brown squamules; a brown squamulose stipe; lamellae yellowish in young specimens turning pink in mature ones; sterile lamella edge with tufts of hyaline cheilocystidia; presence of clamp connections and the production of a colorless watery exudate on cutting the flesh of the basidiomata. 
Description type:Original description 
Description:Basidiomata large, 120–150 mm high, tricholomatoid. Pileus 30–74 mm diam., conic become convex to plano-convex, with a subacute/subobtuse umbo; surface ‘brown’ (5F8/6D4/6E4), squarrose, appressed to recurved squamulose throughout, denser at the disc, often washed off near margin, non-hygrophanous, dry; margin straight, incised, non striate to striate. Lamellae adnexed, pale yellow/light yellow (3A3/4A4) in buds, ‘orange white’ (6A2) in mature ones, up to 9 mm wide, close with lamellulae of different lengths; edge concolorous, smooth, entire. Stipe 65–150 mm × 3–9 mm, central, cylindric, narrowly hollow, brittle, tapering upwards from a slightly broad base; surface ‘pale yellow’(3A3/3D4/4A4) in buds in the lower half become concolorous to the pileus when mature, appressed to recurved squamulose throughout except at the extreme base which is smooth; white mycelial mat present. Context white, up to 2 mm, soft. Producing a colorless watery exudate on cutting the basidiome. Odor not distinctive or none. Spore print ‘pale orange’ (6A3). Basidiospores (12.5–)13–15 × (11.5–)12–14 (–14.5) µm, avL = 14, avW= 13, Q = 1.0–1.2, avQ = 1.07, quadrate in profile. BASIDIA 52.5–68.5 × 12–16 µm, clavate, 4 spored, monosporic basidia also occur, rare. Lamella-edge sterile. Cheilocystidia 15–90.5 × 6.5–17.5 µm, clavate to cylindroclavate, thin-walled, hyaline. Pleurocystidia none. Hymenophoral trama regular, hyphae 8–16(–21) µm wide, thin-walled, hyaline. Subhymenium interwoven. Pileal trama interwoven; hyphae similar to hymenophoral trama. Pileipellis an epicutis interrupted at places by tufts of scale cells reaching a trichoderm towards the centre; elements 44.8¬–144 × 16.6–29.8 µm, clavate, cylindric to cylindroclavate, thin-walled with intracellular brown contents. Stipitipellis a cutis, disrupted by scale cells projecting out as cystidioid elements, 32–97.5 × 4–10 µm, cylindrical to cylindroclavate, thin-walled with pale brown plasmatic contents. Clamp connections and oleiferous hyphae present in all parts. 
Taxon name: