Paturau (1989) identified two important types of fibrous residue
occurring in bagasse: (a) the tough, hard-walled, cylindrical cells of
the rind and vascular tissues (true fibre); and (b) the soft, thinwalled, irregularly shaped parenchymatous cells of the inner stalk tissue (pith). The vessel segments, also associated with the vascular
bundles, are often, but not always, considered as a pith fraction.