Rapicactus Buxb. & Oehme in Cactaceae (Berlin) 1942: 24. 1942 sec. Vázquez-Sánchez & al. 2019
  • =Lodia Mosco & Zanovello in Bradleya 18: 44. 2000 syn. sec. Aquino 2021



Phylogenetics: Traditionally included in Turbinicarpus, separated from it by Vázquez-Sánchez & al. (2013) after Turbinicarpus was found to be polyphyletic by them and previously also by Bárcenas & al. (2011). Subsequent evidence indicated that Rapicactus was an independent lineage of Turbinicarpus s.s. The presence of concentric druses in the hypodermis is a feature present in the members of Rapicactus (De la Rosa-Tilapa & al. 2019). (Vázquez-Sánchez & al. 2019) performed a phylogenetic study that included five molecular markers (matK, rbcL, psbA-trnH, rpl16 and trnL-F) and anatomical characters. Rapicactus was recovered as monophyletic with maximal support as sister to Acharagma, Lophophora and Obregonia. In conclusion, Rapicactus is a lineage independent from Turbinicarpus s.s. Five species and four subspecies are recognized, of which Rapicactus beguini is the species with the greatest morphological variation.A
A. Aquino, D. 2021: Revisions of Epithelantha, Kadenicarpus, Rapicactus, Turbinicarpus – In: Korotkova N. & al., Cactaceae at Caryophyllales.org – a dynamic online species-level taxonomic backbone for the family. – Willdenowia 51(2): 251-270