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Espostoopsis Buxb. in Krainz, Kakteen: 38-39, C Va. 1968 sec. Taylor & Zappi 2004
  • =Gerocephalus F.Ritter in Kakteen And. Sukk. 19: 156. 1968 syn. sec. Taylor & Zappi 2004


Monotypic genus, endemic to the caatinga of Bahia, SE Brazil. Hernández-Hernández & al. 2011 found E. dybowskii within an unsupported Trichocereeae clade, as sister to Rauhocereus (no support), while Schlumpberger & Renner 2012 found E. dybowskii as sister to Micranthocereus densiflorus with 78% MLBS support. Espostoopsis is therefore not closely related to the Andean genus Espostoa, a relationship that had been suggested earlier based on the strong morphological similarities of the two genera.A


A. Korotkova, N., Aquino, D., Arias, S., Eggli, U., Franck, A.R., Gómez-Hinostrosa, C., Guerrero, P.C., Hernández, H.M., Kohlbecker, A., Köhler, M., Luther, K., Majure, L.C., Metzing, D., Müller, A., Nyffeler, R., Sánchez, D., Schlumpberger, B.O. & Berendsohn, W. G. 2021: Cactaceae at – a dynamic online species-level taxonomic backbone for the family. – Willdenowia 51: 251-270