Striations that appear in some wood species when quartersawn. These are usually visible in oak with a golden color.
Radial vertical tissues, extending across the growth rings of a tree, that enable the transmission of sap and produce a decorative spotted figure in quarter-sawn boards (especially oak and sycamore).
Strips of cells extending radially within a tree. The rays serve primarily to store food and transport it through the tree. In some hardwood species, the rays form a conspicuous figure sometimes referred to as flecks. See Flecks.