Thorough coverage, good photos to aid identification, excellent range maps, and more.
Each species has more than just the above mentoned sections. They each also contain a section called " and "habitat" and another called "observations". Most also have a "comments" section. With these sections, the identification of the species, its distribution and abundance and prominence in the forest community is well placed.

This is a very well thought out and thorough reference of the conifers. ( )