Fibric Humisol (FI.H)
Common horizon sequence: Om or Oh, Oh, Of, Oh
Soils of this subgroup have the general properties specified for the Organic order and Humisol great group. They differ from Typic Humisols by having a subdominant fibric layer thicker than 12 cm in the middle or bottom tiers. They may also have a subdominant mesic layer.
Note: Diagnostic horizons are underlined.