France, Rhone-Alpes, Haute-Savoie, Western Alps, Graian Alps, Mont Blanc group, 6.4 km SE of Saint-Gervais-Ies-Bains, 2 km SE of Bionnassay, path from Col de Tricot to Mont Vorassay
45.85083 6.76889 +-30m.
45°51'03"N, 006°46'08"E
coords from label
2130 meters
2130 m
cliff of clay shale (calcareous)
on slightly inclined to vertical rock faces
Note: TLC (specimen in GZU tested): Fatty acid (2-3/2-3Z3).