- Yas giant tree Amargal DW Ms
- Xylocoremium Chicaque DW MS
- Xylaroid fungus disp Chicaque DW Ms
- Xylariaceae crust Ms
- Xylaria young with Dew DW Ms
- Xylaria wide antlers Chicaque DW Ms
- Xylaria globosa
- Xylaria brown Choco DW Ms
- Xylaria anamorph Choco DW Ms
- Xylaria 4 Choco DW Ms
- Xylaria 2 budding Choco DW Ms
- Xeromphalinoid yellow brown MJL DW M
- Xerampholinoid
- Wood stork Tuichi
- Wood stork Mycteria americana
- Will Surubi “leopard” Cat fish
- White-lipped Peccary Tayassu pecari
- White lipped Peccary Tayassu pecari
- White fruit Armagal DW Ms
- Valeriana plantaginea DW Ms