So here it is (so far): A neat list of ten tropical fruits whose edible portion when fresh and ripe, is brown:
1. sapodilla (Manilkara zapota)
2. stinking toe (Hymenae coubaril)
3. black sapote (Diospyros digyna)
4. borojo (Borojoa patinoi)
5. tamarind (Tamarindicus indica)
6. velvet tamarind (Dialium indum)
7. tamarind des indes (Vangueria madagascariensis)
8. ungurahua (Oenocarpus bataua)
9. baru (Dipteryx alata)
10. pajura (Couepia bracteosa)
The Legume family seems to be the global power in producing brown-fleshed fruits. Concerning Landolphia sp as suggested by Gouralata, I looked for photos of brown fleshed fruits but the closest I got was this lovely drawing of one species. Is that brown enough to call brown do you think? Do you know the species that are brown fleshed?