Heldreich's maple
(Balkan maple, Greek maple)

Acer heldreichii Orphanides ex Boissier

Yugoslavia, Greece, Albania, Bulgaria

These photos were taken at KEW garden, on Oct. 02, 2004

Trunk is gray & smooth, sometimes vertically striped on older trees.

Three terminal lobes are well separated.

Leaves & Samaras

Maybe, the distinction among 4 species, that is, Acer pseudoplatanus,
velutinum, heldreichii and trautvetteri might have been done.
So, I added the following images.

It seems to be one of the most remarkable points of
Acer heldreichii, that is, its leaf is lobed deeply.