Piromyces sp. E2 is an eukaryotic species belonging to the phylum Chytridiomycota, which comprises organisms that possess flagellated zoospores, making them unique among the fungi.
These anaerobicsymbionts play a key role in the herbivore digestive tract by providing hydrogen for the bacterial species living in the herbivore gut, but also by aiding with the digestion of plant cell wall material, converting cellulosetoglucose and other simple sugars, making them available for the host and for other symbiotic species.[2]
^Gold JJ, Heath IB, Bauchop T (1988). "Ultrastructural description of a new chytrid genus of caecum anaerobe, Caecomyces equi gen. nov., sp. nov., assigned to the Neocallimasticaceae". BioSystems. 21 (3–4): 403–15. doi:10.1016/0303-2647(88)90039-1. PMID3395694.