  In a recent letter, Ahn and Moon, et al. (2018) studied the quantum states of
Dirac electrons in a two-dimensional structure realized by epitaxial growth of
twisted bilayer graphene rotated exactly 30 degrees. They claim this structure
to be a graphene quasicrystal with dodecagonal quasicrystalline order. However,
as we show in this comment, it is not a quasicrystalline structure, but a Moire
pattern.
