The Taupin directory entries show the pansy logo, and also the word Pensée. It isn't clear whether this is just the name of the flower, or a claim for the trademark "La Pensée" as well - a mark which is claimed and used by Baudinière at 23 rue du Caire Paris. The Taupin cards seem only to show the flower logo.
CPArame shows another publisher with a violet or pansy as logo (Saint-Martin-sur-Oreuse - éditeur Poulain-Rocher) but the details of the logo and the type of postcard shown are fairly different.