https://doi.org/10.1351/goldbook.G02688
Thin, approximately cylindrical filaments in which graphene layers are arranged in a scroll-like manner. There is, at least in part, a regular stacking of the layers as in the graphite lattice, giving rise to h,k,l, X-ray reflections. The physical properties of graphite whiskers approach, along the cylinder axis, those of graphite.
Note: If there is, due to misalignment of the layers caused by their bending, no three-dimensional stacking order as in graphite, the term carbon whiskers should be used. Graphite whiskers and carbon whiskers should be distinguished from more disordered filamentous carbon.