🇺🇸 yellow stainer - 🇩🇪 Karbol-Champignon - 🇪🇪 Mürkšampinjon - 🇷🇺 Шампиньон желтокожий 8/24/24
🆔 Agaricus xanthodermus Genev.
ℹ️ Hymenium: Crowded; whitish when very young, becoming pinkish and finally dark chocolate-brown as spores mature
ℹ️ Cap: Convex to broadly convex or nearly flat; whitish to cream or pale grey-brown, smooth to finely fibrillose, often somewhat squared or flattened at the centre; bruises rapidly bright chrome-yellow, especially along the margin
ℹ️ Hymenium Attachment: Free
ℹ️ Stipe: Cylindrical, whitish, slightly enlarged or bulbous at base; rapidly stains bright yellow when rubbed or cut, particularly at the base; with a large, persistent, flaring double ring with a thickened outer margin
⚫🟤 Spore print very dark brown to chocolate-brown
🌱🏙️ Saprobic on nutrient-rich and disturbed soils (lawns, gardens, parks, roadside verges, hedgerows); solitary to clustered or forming arcs; summer to autumn
☠️ Poisonous,causes gastrointestinal poisoning
📏 Fruit body medium to large; stipe ~4–15 cm long and ~1–3 cm thick
📐 Cap ∅ ~5–15 cm
🔪 Flesh white, sometimes weakly yellowing elsewhere but turning conspicuously bright chrome-yellow in the stipe base when cut or bruised, yellow colour may later fade or become brownish
🧪 KOH yellow on cap surface
👃 Strongly phenolic, ink-like, iodine-like or carbolic, intensified by cooking
👅 Not distinctive
🔬 Spores ellipsoid, smooth, thick-walled, brownish in KOH, ~4.5–5 × 3–4 µm; basidia 4-sterigmate; cheilocystidia clavate to subcylindrical, ~20–30 × 4–8 µm; pleurocystidia absent; pileipellis a cutis
🔤 Toxic white Agaricus distinguished by its extremely rapid chrome-yellow bruising and strong phenolic odour
🇺🇸 yellow stainer - 🇩🇪 Karbol-Champignon - 🇪🇪 Mürkšampinjon - 🇷🇺 Шампиньон желтокожий