: Clear photos or drawings of the entire tree, leaves/needles, and bark.
: Use authoritative databases like the Baumpflege-Lexikon for accurate botanical data. Grundlagenwissen über Bäume - Baumpflege-Lexikon
: Include a section on "How to Use This Lexicon" for field identification.
: Use the same formatting for every species entry so readers can easily compare different trees.
:Organize the 120 trees into logical categories for better readability: