This attractive 1985 French botanical definitive series highlights four important native European forest species: Oak (Quercus pedunculata), Spruce (Picea abies), Elm (Ulmus montana), and Beech (Fagus sylvatica). Each stamp combines a finely detailed scientific illustration of leaves, fruits, and botanical structures alongside a full tree silhouette, reflecting France’s long tradition of educational natural-history stamp design. The series is valued by thematic collectors specializing in flora, forestry conservation, and European botanical studies. Complete sets in fresh mint condition are particularly desirable due to their clean engraving-style artwork and coordinated denomination range.