Primary tabs


Thelocactus (K.Schum.) Britton & Rose in Bull. Torrey Bot. Club 49: 251. 1922 sec. Hunt 2016
  • =Napina Frič, Cacti Price-List 1928: 6. 1928 syn. sec. Kew WCVP (2019)
  • =Thelomastus Frič ex Kreuz., Verzeichnis Amer. Sukk. Rev. Syst. Kakteen: 10. 1935 syn. sec. Kew WCVP (2019)


Revised by Carlos Gómez-Hinostrosa & Héctor M. Hernández


See under Ferocactus.A

Taxon standing

Category D. The genus is polyphyletic, paraphyletic or nested in another genus.


Shrubs or unbranched plants; stems globose, depressed-globose or subcylindrical, tubercles rounded to conical, sometimes proximally confluent in spiral ribs; areoles on the apices of the tubercles, sometimes with a short adaxial groove that does not extend to the axile of mature tubercles; spines acicular or subulate, smooth or annulated, straight or curved, central and radial spines generally distinguishable, white, yellowish or red; flowers apical, funnel-shaped, pericarpal and receptacular tube scaly, scales more than 3, tepals white, yellow or magenta; fruits ovoid to globose-cylindric, greenish to reddish, semi-fleshy, scaly with the perianth rem-nants persistent, opening at maturity by a basal pore; seeds pyriform, with a basal hilum, black, testa papillate or smooth.B


A. Hernández-Ledesma, P., Berendsohn, W. G., Borsch, T., von Mering, S., Akhani, H., Arias, S., Castañeda-Noa, I., Eggli, U., Eriksson, R., Flores-Olvera, H., Fuentes-Bazán, S., Kadereit, G., Klak, C., Korotkova, N., Nyffeler, R., Ocampo, G. & Ochoterena, H. 2015: A taxonomic backbone for the global synthesis of species diversity in the angiosperm order Caryophyllales. – Willdenowia 45(3): 281-383
B. Higinio Sandoval-Ortega, M. & al. 2022: Neotype of Echinocactus fossulatus (Cactaceae) and the first register of Thelocactus hexaedrophorus, in Aguascalientes, Mexico. – Journal of the Botanical Research Institute of Texas 16(1): 47-51