- Young Paxillus sp. encountered in Chivor forest above Santa Maria
- young Mycena acicula or something close to it seen in Raquira, Boyoca
- young leaves of Adiantum macrophyllum - Largeleaf Maidenhair fern seen near Yopal
- Yellow black bird Rio Claro
- Yellow black bird Rio Claro
- Yas giant tree Amargal DW Ms
- Xylria sp. intrigingly green & yellow
- Xylobotryum portentosum
- Xylariaceae
- Xylariaceae
- Xylaria? anamorph growing on oak in Pauna, Boyaca
- Xylaria tentaculata
- Xylaria tentacula seen in Mani, Casanare
- Xylaria tentacula seen in Mani, Casanare
- Xylaria sp. fruiting in a nice row
- Xylaria row in Mani
- Xylaria immature
- Xylaria growing in a bundle, radiating like fireworks in Yopal
- Xylaria giants sliced open to show the inner workings, which would be hollow when fully mature..
- Xylaria giants measuring 15cm / 6 in in height seen in Los Santos, Santander.