- Carludovica palmata Panama Hat Toquilla palm
- Chonta dura fruits Bractis gassipae
- Cladonia cristatella British soldier lichen
- Clathrus archeri Iguaque hanging
- Cliff big Rio Claro
- Cliff Rio Claro
- Collared toucan - Pteroglossus torquatus
- Collared toucan - Pteroglossus torquatus on branch
- Cookeina sulcipes Mariquita
- Cookeina sulcipes RioClaro
- Cookeina tricholoma RioClaro
- Coprinellus disseminatus gray RioClaro
- Coprinellus disseminatus RioClaro
- Coprinus comatus Medellin 2015
- Coprinopsis sp
- Blackwellomyces pseudomilitaris Rio Claro
- Blackwellomyces pseudomilitaris Rio Claro
- Cordyceps nidus on trap door spider Rio Claro
- Cortinarius Oak forest Villa de Leyva
- Costus Zingiber Medellin