- Marasmius candidus growing in Mocoa
- Marasmius sp catching a beam of sun in Barichara
- Marasmius sp. in the Jardin Botanico Bogota
- Marasmius sp. seen in Isla Escondida, Putumayo
- Marasmius sp., red brown seen in the sun in Rio Claro, Antioquia
- marble river bed of the gorgeous Rio Claro, Antioquia
- Marmoset monkey seen in Isla Escondida
- Maybe a Dacryopinax sp. growing in Isla Escondida
- Maybe a Xylaria anamorph seen in Pauna
- Maybe Ossicaulis sp. growing on on wood
- Megacollybia? seen in Isla Escondida
- minute Marasmius sp. seen in Isla Escondida, Putumayo
- Monolena primuliflora flowering in Isla Escondida
- Monotropa sp. or maybe a red variety of M. uniflora, a mycoheterotroph plant that gets its nutrients from a fungi growing in Pauna, Colombia
- Mycena / Collybia plectophylla covering a trunk
- Mycena / Collybia plectophylla close up seen in Isla Escondida, Putumayo
- Mycena / Collybia plectophylla covers a trunk seen in Isla Escondida, Putumayo
- Mycena holoporphyra gills
- Mycena holoporphyra on a branch in El Cedro
- Neodasyscypha cerina