Softbrown mushroom

Softbrown  mushroom

Observation - Softbrown mushroom - UK and Ireland. Description: Growing amongst leaf litter. Cap 7cm across, umbonate in centre, dark brown, soft to touch, rim curved under, slightly furrowed margin. Gills dark brown, crowded, adenexed. Stipe 8cm long, 7mm across, cyclindrical, ascending ring, fibrillose, dirty brown

Growing amongst leaf litter. Cap 7cm across, umbonate in centre, dark brown, soft to touch, rim curved under, slightly furrowed margin. Gills dark brown, crowded, adenexed. Stipe 8cm long, 7mm across, cyclindrical, ascending ring, fibrillose, dirty brown at top, reddish brown below ring, fading to white at base. Internally stipe honey-combed. delightful rich smell of mushroom. No milk or discolouration on cutting. Any ideas please?