Primary tabs


Rapicactus Buxb. & Oehme in Cactaceae (Berlin) 1942(1): 24. 1942 sec. Vázquez-Sánchez & al. 2019


Revised by David Aquino


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 et al. 2018). Vázquez-Sánchez et 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 (See treatment).A

Taxon standing

Category A: The genus is monophyletic based on a complete or very comprehensive phylogenetic study, and a phylogeny-based taxonomic synopsis was published.B


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: 251-270
B. Vázquez-Sánchez, Sánchez, D., Terrazas, T., De La Rosa-Tilapa, A. & Arias, S. 2019: Polyphyly of the iconic cactus genus Turbinicarpus (Cactaceae) and its generic circumscription. – Botanical Journal of the Linnean Society 190(4): 405-420