Basal cactus phylogeny: implications of Pereskia (Cactaceae) paraphyly for the transition to the cactus life form [1]Arkivigite je 2006-09-27 per la retarkivo Wayback Machine
Reto Nyffeler: The closest relatives of cacti: insights from phylogenetic analyses of chloroplast and mitochondrial sequences with special emphasis on relationships in the tribe Anacampseroteae, in American Journal of Botany, 94, 2007, S. 89-101.: Online.Arkivigite je 2008-05-16 per la retarkivo Wayback Machine
biodiversitylibrary.org
Genera Plantarum, secundum ordines naturales disposita jŭta methodum in Horto Regio Parisiensi exaratam. Paris 1789, p. 312 (online).
botanicus.org
Carl von Linné: Species Plantarum. 1a eldono, Lars Salvius, Stokholmo 1753, p. 445–446 (online).
mnhn.fr
Wendy L. Applequist & Robert S. Wallace: Expanded circumscription of Didiereaceae and its division into three subfamilies, in Adansonia, sér. 3 , 25(1), 2003: pdf-Online.Arkivigite je 2006-11-19 per la retarkivo Wayback Machine
web.archive.org
Basal cactus phylogeny: implications of Pereskia (Cactaceae) paraphyly for the transition to the cactus life form [1]Arkivigite je 2006-09-27 per la retarkivo Wayback Machine
Reto Nyffeler: The closest relatives of cacti: insights from phylogenetic analyses of chloroplast and mitochondrial sequences with special emphasis on relationships in the tribe Anacampseroteae, in American Journal of Botany, 94, 2007, S. 89-101.: Online.Arkivigite je 2008-05-16 per la retarkivo Wayback Machine
Wendy L. Applequist & Robert S. Wallace: Expanded circumscription of Didiereaceae and its division into three subfamilies, in Adansonia, sér. 3 , 25(1), 2003: pdf-Online.Arkivigite je 2006-11-19 per la retarkivo Wayback Machine