Liquidambar orientalis - Oriental Sweet Gum

L. orientalis is more round headed and shorter in stature than L. styraciflua.
Leaves are often palmately double-lobed.
Foliage is slightly smaller in size than L. styraciflua.
Bark is more checkered than L. styraciflua's vertical furrows.

Liquidambar styraciflua - Sweet Gum

Liquidambar styraciflua: Liquidambar, from the Latin 'liquidus' for 'liquid' and 'ambar' for 'amber', referring to the fragrant resin found in this species; styraciflua, flowing with gum.

Vertical excurrent habit.
Yellow variegated leaves on cv. 'Aurea'.
Red to purple to orange to yellow fall color, dependent on cv.
Fruits are round, burr-like seed pods.

Bark smooth gray to grayish brown, becoming furrowed with age.

Parrotia persica - Persian Parrotia

Parrotia persica: Parrotia, named for Parrot, German naturalist and traveler who climbed Turkey’s Mt. Ararat in 1834; persica, from Persia.