Did you know that the Valais has several naturalized species of Opuntia and cylindropuntia? A naturalized species is a species foreign to a biotope which reproduces regularly and which sustainably maintains a population through numerous life cycles and this without human intervention. To find out more, I offer you, with the author's agreement, the complete article by Michel Desfayes entitled "The opuntias of Valais, a thorny problem: species and nomenclature" available at the bottom of the page.

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Do you know a location of Opuntia in Valais? Do not hesitate to contact me to discuss it. I want to visit them all!

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Good discovery!