E. van Jaarsveld, S. Hammer: Tylecodon bruynsii A new cliff-dwelling species. In: Cactus and Succulent Journal. Band 81, Nummer 5, 2009, S. 235–239, DOI:10.2985/015.081.0503
In: Haseltonia. Tylecodon ectypus, a New Cliff Dwelling Species from the Skaaprivier, Northern Namaqualand (Northern Cape Province), South Africa, Band 27, 2020 S. 8–13 DOI:10.2985/026.027.0102
E. van Jaarsveld, S. Hammer: Tylecodon opelii, a new obligatory quartz-gravel species from the Northern Knersvlakte (Western Cape, South Africa). In: Cactus and Succulent Journal. Band 83, Nummer 4, 2011, S. 140–145, DOI:10.2985/0007-9367-83.4.140
