Echinocactus horizonthalonius

Echinocactus horizonthalonius Lem. is treated as an accepted taxon in Plants of the World Online.¹

The current source-backed classification places it in Cactaceae within Echinocactus.¹²

Its recorded native range/source remark is MXEAG, MXECU, NWMOO, MXEGU, MXNBS, ARIOO, NORTHERNAMERICA, MXCDF, MXEDU, NWM, MEXICO, SOUTHCENTRAL_USA; S. Arizona to W. & S. Texas and C. Mexico.¹

POWO records the plant context as succulent subshrub, desert or dry shrubland.¹

This is a source-populated draft intended for later Kaktus Doktoru editorial rewriting; care advice and morphology should be reviewed before publication.

References

1. Plants of the World Online. "Echinocactus horizonthalonius Lem.". Royal Botanic Gardens, Kew. Accessed: 2026-06-10. https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:131879-1 ↩
2. GBIF Secretariat. "Echinocactus horizonthalonius". GBIF Backbone Taxonomy. Accessed: 2026-06-10. https://www.gbif.org/species/3084090 ↩