Pyrrhocactus occultus (Phil.) F.Ritter (1959:131)
Taxonomy & Nomenclature
Synonyms: Echinocactus occultus Phil. in Fl. Atacam.: 23 (1860); Neoporteria occulta (Phil.) Britton & Rose in Cact. 3: 95 (1922); Nichelia occulta (Phil.) Bullock in Bull. Misc. Inform. Kew 1938: 298 (1938); Chilenia occulta (Phil.) Backeb. in Kakteenkunde 1939: 82 (1939); Hildmannia occulta (Phil.) Kreuz. & Buining in Repert. Spec. Nov. Regni Veg. 50: 207 (1941); Neochilenia occulta (Phil.) Backeb. in Repert. Spec. Nov. Regni Veg. 51: 50 (1942)
Invalid (synonym of Eriosyce heinrichiana) (POWO, 2025)
Conservation Status
Invalid (synonym of Eriosyce heinrichiana) (POWO, 2025)
Distribution & Habitat
Chile
Biology & Ecology
Hypodigm
Media
References
Humphreys, Aelys M., Govaerts, Rafaël, Ficinski, Sarah Z., Lughadha, Eimear Nic and Vorontsova, Maria S. (2019). Global dataset shows geography and life form predict modern plant extinction and rediscovery. Nature Ecology & Evolution 3: 1043-1047. https://doi.org/10.1038/s41559-019-0906-2 [Supplementary Dataset 1] [erroneously lists Pyrrhocactus occultus as a heterotypic synonym of Neoporteria occulata, but cites POWO (2018) and so presumably meant to treat it under Eriosyce heinrichiana]
POWO. (2018). Plants of the World online. Facilitated by the Royal Botanic Gardens, Kew. http://e-monocot.org/.
POWO. (2025). Plants of the World Online (online resource). Facilitated by the Royal Botanic Gardens, Kew, United Kingdom. Available at: https://powo.science.kew.org/ [Accessed 17 August 2025]
WCMC (World Conservation Monitoring Centre). (1992). Global Biodiversity: Status of the Earth's living resources. London: Chapman & Hall. xx + 594 pp.