Kaliwatan sa uhong ang Hypoxylon calyptra.^[1] sakop sa ka-ulo nga Ascomycota, ug Una ning gihulagway ni Augusto Chaves Batista ni adtong 1950.^[2] Ang Hypoxylon calyptra sakop sa kahenera nga Hypoxylon, ug kabanay nga Hypoxylaceae.^[1][3] Walay nalista nga matang nga sama niini.^[1]

1. ↑ ^{1.0 1.1 1.2} Roskov Y., Kunze T., Orrell T., Abucay L., Paglinawan L., Culham A., Bailly N., Kirk P., Bourgoin T., Baillargeon G., Decock W., De Wever A., Didžiulis V. (ed) (2019). "Species 2000 & ITIS Catalogue of Life: 2019 Annual Checklist". Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-884X. TaxonID: 41636937. Retrieved 2019-11-11. {{cite web}}: |author= has generic name (help)CS1 maint: multiple names: authors list (link)
2. ↑ Batista, A.C. (1950) , In: Bol. Secr. Agric. (Pernambuco) 17:61.
3. ↑ Ju Y.M. & Rogers J. (2019). Xylariaceae: Home of the Xylariaceae (version Oct 2017). In: Species 2000 & ITIS Catalogue of Life, 2019 Annual Checklist (Roskov Y., Ower G., Orrell T., Nicolson D., Bailly N., Kirk P.M., Bourgoin T., DeWalt R.E., Decock W., Nieukerken E. van, Zarucchi J., Penev L., eds.). Digital resource at www.catalogueoflife.org/annual-checklist/2019. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-884X.