Transpiercing in wood cells

摘要

This paper discusses the nature of 'transpierced' elements in wood. In Croton urucurana and Alchornea triplinervia, different stages of development have been studied. These have provided the possibility of understanding the origin of 'tranpiercing regions' from the dissolution of the central core of the trabecula that has pierced the cell from one wall to the opposite one.