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 Add this item to the list  811743 Original description
Description type:Original description 
Description:Basidiocarps medium sized. Pileus 25−62 mm diam., broadly convex when young, turning slightly infundibuliform to deeply infundibuliform when mature, with a more or less distinct papilla; surface dry, more rugose in the center when older, brown (7D8 to 7E7) to dark brown (8F7) in the center and paler towards the margin, brownish orange (5C5) to brown (6D7) to pale yellow (3A3) towards the margin, typically becoming uneven in color when older, typically with dark brown (8F7) discoloration, varying from spotted to brushed over the whole surface except the margin; margin indistinctly striate, slightly crenulate. Lamellae subdecurrent to decurrent, 1−3 mm broad, crowded, with 3−4 series of lamellulae, pale yellow (4A3) to cream, discoloring light brown (6D6) to brown (7E6), spotted when older. Stipe 34−76 x 4−7 mm, cylindrical, central, rarely slightly eccentric; surface dry, smooth, whitish pruinose, particularly in young specimens, dull yellow (3B3) to olive brown (4D6) at the apex, yellowish brown (5E4) to dark brown (7F5) towards the base, sometimes brownish orange (7C7), with 1−2 mm long hairs at the base. Context 0.5−4 mm broad in the pileus, partially hollow to completely hollow in stipe, pale yellow (3A3); smell strong, reminding of Pentatomidae bugs; taste mild. Latex watery white to white, abundant, unchanging on exposure, unchanging on handkerchief, tissue paper and with 10% KOH; taste slightly astringent and becoming faintly peppery. Macrochemical reaction context unchanging with 10% KOH, unchanging with FeSO4. Basidiospores globose to broadly ellipsoid, 6.0−6.6−7.2−7.7(−7.8) × 5.5−6.1−6.6.−7.0(−7.2) µm, Q = 1.02−1.08−1.10−1.21 (n=100); ornamentation amyloid, composed of irregular ridges up to 1 µm high, forming an incomplete reticulum, warts and ridges connected by fine lines; isolated warts present; plage inamyloid to distally amyloid. Basidia 42−53 × 13−17 µm, 4-spored, some 2-spored, subclavate to clavate; with guttate contents. Pleuromacrocystidia rare, not protruding to slightly protruding up to 10 µm, 55−68 × 13−17 µm, fusiform, with a mucronate, occasionally ramified apex. Pleuropseudocystidia scarce to abundant, 3−6 µm diam., not emergent to slightly emergent, cylindrical to tortuous with an obtuse apex, often broadened at the apex. Lamellae edge heterogeneous, composed of marginal cells and basidia; marginal cells abundant, 13−26 × 5−13 µm, cylindrical to subclavate, thin-walled; cheilocystidia absent to rare, 34−38 ×11−14 µm, not emergent, fusiform with a mucronate apex. Lamellar trama consisting of lactifers and sphaerocytes. Pileipellis a hyphoepithelium; terminal layer 10−20 µm thick, composed of repent cylindrical hyphae; subpellis a layer of large globose cells, up to 30 µm diam., mixed with cylindrical to inflated hyphae. 
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