"The Savinier Juniper, Watercolor For A 19th Century Flora"
Original watercolor on laid paper for a 19th century flora, perhaps published? Part of a set of 7 watercolors of different plants and the same format, we can read at the bottom: Genevrier savinier and further on juniperus sabina. We read at the top right: fig.30 p.28. Very beautiful rendering of the plant. 
Le Magazine de PROANTIC
TRÉSORS Magazine
Rivista Artiquariato