Rhone-Alpes, Haute-Savoie, Western Alps, Graian Alps, Mont Blanc group, 6.4 km SE of Saint-Gervais-les-Bains, 2 km SE of Bionnassay, path from Col de Tricot to Mont Vorassay.
Habitat
Cliff of clay shale (calcareous).
Substrate
On inclined and vertical rock faces (SSE-exposed).
