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Tephrocactus alexanderi, also known as Tephrocactus geometricus, is a species of cactus under the genus Tephrocactus. It is also classified under the subfamily Opuntioideae. It is native to Argentina Catamarca (Angostura de Guanchim and Tinogasta) and close to the Bolivian border, where it is exposed to extreme heat and an arid climate. T. geometricus receives its name from the Greek word γεωμετρία (geometria), meaning geometry.
Text excerpted from the Wikipedia article Tephrocactus alexanderi by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
