Indian Almond Leaves are one of the more common botanicals, highly regarded for their healing properties with betta breeders.  They are found around South Asia and make for an authentic look.  Other leaves included in this kit can include banana leaves, cinnamon leaves, guava leaves, mandioca leaves, mulberry leaves and jackfruit.  Leaves can be boiled to extract the tannins and hummins for use later.  Or added to any leaf litter substrate.  They have a great texture and look only adding to the appeal of your tank. Both for you and your tankmates.