1. Gelisol Suborders
Histels- Gelisols with large quantities of organic matter
Turbels- Gelisols with evidence of extensive mixing by frost action
Orthels- Common gelisols that don’t have high quantities of OM or extensive mixing from frost action

3. Histosol Suborders
~Folists- Histosols that aren’t saturated with water for long periods of time during the year. ~Wassists- Histosols that are submerged for more than 21 hours a day ~Fibrists- Histosols that are primarily made up of slightly decomposed OM called PEAT ~Saprists- Histosols made up of highly decomposed OM called MUCK ~Hemists- Histosols made up of moderately decomposed OM

6. Spodosol Suborders
Aquods- Poorly drained Spodosols with a water table at or near the surface for much of the year
Gelods- Spodosols of very cold climates (mean annual soil temperature less than 0 degrees C)
Cryods- Spodosols of cold climates
Humods- Well-drained Spodosols that contain relatively large quantities of OM
Orthods- Common Spodosols that don’t fit in any other suborders

9. Andisol Suborders
Aquands- Andisols with a water table at or near the surface for much of the year
Gelands- Andisols of very cold climates (mean annual soil temperature less than or equal to 0 degrees C)
Cryands- Andisols of cold climates
Torrands- Andisols of very dry climates
Xerands- Temperate Andisols with very dry summers and moist winters
Vitrands- Relatively young Andisols that are coarse- textured and dominated by glass
Ustands- Andisols of semi-arid and sub-humid climates
Udands- Andisols of humid climates

12. Themes in the First 4 Main Orders
Orth- doesn’t fit in any other suborder
Aqu- water table at or near the surface
Gel- very cold climates less than or equal to 0 degrees C
Cry- cold climates