CELL TYPE	CYTOPLASMIC FEATURES	CELL WALL FEATURES	3-D GEOMETRY
Vessel Element  Series of Vessel Elements are longitudinally joined end to end via perforation plates to form Vessels	No cytoplasm at maturity  Diameter of lumen is much larger than  thickness of cell wall	Unevenly thickened secondary cell wall with circular or  elliptical bordered pits  Perforation Plates (Transverse end walls) vary: Simple Scalariform Foraminate Cell Wall / Lumen Ratio very small	Axial Tracheid Transverse Isodiametric Longitudinal  Elongated cylinder with tapered ends.  Longest axis is vertical direction.