- Clathrus archeri seen in Chauna, Boyacá, Colombia
- Clathrus archeri Iguaque hanging
- Clathrus archeri egg with jelly layer removed showing the underside of the tentacles and immature gleba
- Clathrus archeri egg transect DW Ms
- Clathrus archeri egg seen in Villa de Leyva
- Clathrus archeri 2 Chicaque DW Ms
- Cladonia lichen, possibly C. secundana seen in Pozo de Nutria, 3200 m
- Cladonia cristatella British soldier lichen
- Cissus erosa flower, a climber in the Vitaceae / Grape family
- Cimicifuga yunnanensis flower, a woodland plant. Its close American relatives are known as cohosh or bugbane
- Cicada Thinyel Gang DW Ms
- Chusquea shoot Choco Ms
- Chonta dura fruits Bractis gassipae
- Chocolate Mushrooms & Boltes in Chocolate S
- Chocolate fruit Yovani 1 s
- Choco Sunset setting Ms
- Choco sunset Ms
- Chlorophyllum molybdites, the Green-spored shaggy parasol, also known as the "Vomiter" is best enjoyed visually as here seen in Mani.
- Chlorophyllum molybdites row Tayrona
- Chlorophyllum molybdites field Armenia