This note deals with four cryptogamic collections held at the Confluences Museum in Lyon. As part of their inventory, research was undertaken on the collectors and acquisition by the museum. Present among these collections is a fascicle of a century of algae collected in Brittany by Lelièvre de la Morinière & Prouhet in 1841. Also two specimens of dried lichens of lichens made during the expeditions of Ernest Chantre (1890-1894) in the Caucasus and Gaston Buchet (1892-1895) in the Canary Islands and Iceland. Among the Chantre collection are two syntypes of species described by J. Müller Argoviensis on the basis of specimens collected by Ms. Chantre, an unknown botanist: Lecidea araratica and Lecidea chantriana. Finally, unexpectedly, a series of mosses of Hilarion Borel, which has been published by Octave Meyran in 1912, is included in the Vermorel collection. Algae, Mosses Lichens, musée des Confluences Victor Vermorel Hilarion Borel, Octave Meyran Lelièvre de la Morinière Prouhet, Gaston Buchet, Ernest Chantre Jeanne Bellonie Chantre XIXth century - XXth century