Begonia ozotothrix D.C.Thomasin Edinburgh J. Bot. 66(1): 105. 2009
Isotype: Indonesia, Sulawesi,Sulawesi Tengah, Gunung Katopas, alt. 615 m, 1°10'10.74"S, 121°28'24.3"E, on wet rock wall at riverbank, full-shade, 7 May 2008, Thomas, D.C. & Ardi, W.H. 08-67 (BO)
Holotype: Indonesia, Sulawesi,Sulawesi Tengah, Gunung Katopas, alt. 615 m, 1°10'10.74"S, 121°28'24.3"E, on wet rock wall at riverbank, full-shade, 7 May 2008, Thomas, D.C. & Ardi, W.H. 08-67 (E)
Isotype: Indonesia, Sulawesi,Sulawesi Tengah, Gunung Katopas, alt. 615 m, 1°10'10.74"S, 121°28'24.3"E, on wet rock wall at riverbank, full-shade, 7 May 2008, Thomas, D.C. & Ardi, W.H. 08-67 (E)