(1) Latex cells: They differ from latex vessels in that they are not formed due to cell fusions and with other latex cells to form a network. They are branched or unbranched. They do not anastamose eg. Calotropis, Nerium, Thevetia. Euphorbia (Fig A)
(2) Latex vessels: They are composed of a large number of cells placed end to end with their transverse walls dissolved so as to form a long vessels. They are unbranched in the beginning but get branched later. Two or more latex vessels fuse with each other forming a network eg. Papaver, Argemone, Sonchus.(Fig B).