Fagus orientalis the buds include flower buds. The flowers are small catkins which appear shortly after the leaves in spring. The seeds are small triangular nuts long and wide at the base; there are two nuts in each cupule, maturing in the autumn 5–6 months after pollination. The cupule differs from that of European Beech in having flattened, slightly leaf-like appendages at the base (slender, soft spines in European Beech). "Fagus orientalis" is closely related to the "Fagus sylvatica" (European Beech), and intergrades with it in the Balkans and northwestern Turkey. These hybrids with European Beech are named "Fagus × taurica". The
Stigmella hemargyrella Stigmella hemargyrella Stigmella hemargyrella is a moth of the Nepticulidae family. It is found in most of Europe, except Iceland, Norway, Finland, Portugal and most of the Baltic region. The moths (imago) are bivoltine flying from April to May and again from July to August and can be found resting on trunks. The wingspan is 5–6 mm. The egg can be laid on either side of the leaf and the pale yellowish-white larva feed, within a mine on "Fagus sylvatica" and "Fagus sylvatica orientalis". The mine is a sinuous gallery and at the early state is relatively narrow with a