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LCF.Udipsamments

Key to Subgroups

LCFA. Udipsamments that have a lithic contact within 50 cm of the mineral soil surface. Lithic Udipsamments
Soil Families and Soil Series in Subgroup

LCFB. Other Udipsamments that have, in one or more horizons within 100 cm of the mineral soil surface, redox depletions with chroma of 2 or less and also aquic conditions for some time in normal years (or artificial drainage). Aquic Udipsamments
Soil Families and Soil Series in Subgroup

LCFC. Other Udipsamments that are saturated with water in one or more layers within 100 cm of the mineral soil surface in normal years for either or both:
1. 20 or more consecutive days; or
2. 30 or more cumulative days. Oxyaquic Udipsamments
Soil Families and Soil Series in Subgroup

LCFD. Other Udipsamments that have a horizon, 5 cm or more thick, either below an Ap horizon or at a depth of 18 cm or more from the mineral soil surface, whichever is deeper, that has one or more of the following:
1. In 25 percent or more of each pedon, cementation by organic matter and aluminum, with or without iron; or
2. Al plus 1/2 Fe percentages (by ammonium oxalate) totaling 0.25 or more, and half that amount or less in an overlying horizon; or
3. An ODOE value of 0.12 or more, and a value half as high or lower in an overlying horizon. Spodic Udipsamments
Soil Families and Soil Series in Subgroup

LCFE. Other Udipsamments that have lamellae within 200 cm of the mineral soil surface. Lamellic Udipsamments
Soil Families and Soil Series in Subgroup

LCFF. Other Udipsamments that have a surface horizon between 25 and 50 cm thick that meets all of the requirements for a plaggen epipedon except thickness. Plagganthreptic Udipsamments
Soil Families and Soil Series in Subgroup

LCFG. Other Udipsamments. Typic Udipsamments
Soil Families and Soil Series in Subgroup

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