Oh dear, I think I agree with Walter. (Sorry Walter!)
The fact of the matter is that the trees came first, then their representations in bonsai form, and finally some willing aesthete decided to classify the various forms. Because the variation of tree forms is virtually infinite, there are inevitably going to be cross-overs and marginal forms as well as forms that fit into no category at all. The artist creates the bonsai and others decide into which style it fits - if, indeed, it fits any. It seems to be more important for the viewer to be able to categorize bonsai that it is for the artist.
So, we are back to a dream, a vision?
Will, I think we have to be there. Literati is arguably the most abstracted of all styles and to describe the style to one who has never seen a literati either in bonsai form, in illustration or in life, requires the audience to employ a considerable degree of imagination and vision. Even then, without visual references, a full comprehension would be all but impossible.