Pitting between vessels is alternate and covered, and fibres are generally not divided by a septum. The axial (i.e., longitudinal) parenchyma varies from a winged shape to confluent, and is irregularly storied (i.e., layered), while the rays (perpendicular to growth rings) are of variable height and generally comprise a single or double cell width.
Pitting between vessels alternates and remains covered, with fibres not divided by a septum. The axial parenchyma can be winged or confluent, is irregularly structured, and the rays (perpendicular to growth rings) vary in height and are usually composed of one or two cell widths.