Duff
Forest litter and other organic debris in various stages of decomposition, on top of mineral soil, typical of conifer forests in cool climates where the rate of decomposition is slow and where litter accumulation exceeds decay.
Forest litter and other organic debris in various stages of decomposition, on top of mineral soil, typical of conifer forests in cool climates where the rate of decomposition is slow and where litter accumulation exceeds decay.