Cochlidium serrulatum is  a commonly encountered Neotropical grammitid fern. It is also known from tropical Africa, Madagascar and Mauritius. It as one of the many examples of grammitid ferns with this type of geographic distribution.  The plants seen here are forming a small colony, reproducing via root proliferations. Although rarely reported in taxonomic literature, this feature can easily be seen if the plants are carefully removed from the substrate without breaking the roots.