Reflection doesn't show static properties properly

I have a pseudo-enum class that consists of a protected constructor and a list of readonly static properties:

public class Column
{   
    protected Column(string name)
    {
      columnName = name;
    }

    public readonly string columnName;

    public static readonly Column UNDEFINED = new Column("");
    public static readonly Column Test = new Column("Test");

    /// and so on
}

I want to access individual instances by their string name, but for some reason, the reflection does not return the static properties at all:

In the above image, you can see that the property exists and has a non-null value, yet if I query it using reflection, I get null.

If I try to query the property list, I get an empty array:

            PropertyInfo[] props = typeof(Column).GetProperties(BindingFlags.Static);
            if (props.Length == 0)
            {
                // This exception triggers
                throw new Exception("Where the hell are all the properties???");
            }

What am I doing wrong?