"香枫的树叶" can be translated as "the leaves of the fragrant maple" or more naturally as "fragrant maple leaves".
"Fragrant maple" refers to a maple tree variety known for its pleasant fragrance (though specific botanical names like Acer buergerianum "trident maple" may vary; "fragrant" emphasizes the aroma).
If referring to a specific species with a known English name, use its botanical/common term (e.g., Acer palmatum "Japanese maple" if applicable).
For general contexts, "fragrant maple leaves" is concise and clear.