transfusion tissue

transfusion tissue

tissue lying on either side of the vascular bundles in leaves of GYMNOSPERMS that probably represents an extension of the vascular system. It is composed of empty parenchymatous cells with pitted and thickened walls.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005