PPG I (2016). "A community-derived classification for extant lycophytes and ferns". Journal of Systematics and Evolution. 54 (6): 563–603. doi:10.1111/jse.12229. S2CID39980610.
Smith, Alan R.; Pryer, Kathleen M.; Schuettpelz, Eric; Korall, Petra; Schneider, Harald; Wolf, Paul G. (August 2006). "A Classification for Extant Ferns". Taxon. 55 (3): 705–31. doi:10.2307/25065646. JSTOR25065646.
Smith, Alan R.; Pryer, Kathleen M.; Schuettpelz, Eric; Korall, Petra; Schneider, Harald; Wolf, Paul G. (August 2006). "A Classification for Extant Ferns". Taxon. 55 (3): 705–31. doi:10.2307/25065646. JSTOR25065646.
kew.org
powo.science.kew.org
"Thelypteris Schmidel". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2020-01-11.
PPG I (2016). "A community-derived classification for extant lycophytes and ferns". Journal of Systematics and Evolution. 54 (6): 563–603. doi:10.1111/jse.12229. S2CID39980610.