Echinopsis aurea
A small, ribbed globular cactus from northwest Argentina with large lemon-yellow flowers, often grown as Lobivia aurea. It needs strong sun, summer water and a cool, dry winter rest to flower well.
Where it grows wild
Rocky slopes and scrub in the dry hills and sierras of northwest Argentina, as solitary heads or clusters among rocks and grass.
Literature gives 500–1500 m; only three records carry an elevation (43–900 m).
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Profiles are drafts built from measured range and climate and from published sources; each section carries its own confidence in the app. Photo from Wikimedia Commons, used under its CC BY 4.0 licence, unmodified.