Commode curtail tread, Monkey’s tail, Newel Post.
The commode curtail tread with the Monkey’s tail set over a newel post is a very traditional setting, The newel post adds additional stability to the start of the handrail run, This is especially useful on a long straight flight flight when the last handrail tie may be a good distance awat from the feature tread.
A turned timber newel post may also be used, these will normally compliment the style of spindle used.