I felt the writing here was more than a bit pompous, but even though I had to reach out for my dictionary for this one, I have to admit it was really clever:

> but The Trees’ faults are untold, and they are untold in the second sense of the word.

Untold:

1. too much or too many to be counted

2. (of a story or an event) not narrated

Criticism of literature is often itself literary to a fault. In this case though I would say it is a definite fault that it is not clear which is the second sense of untold and which the first.