Vascular tissue are typically found on the undersides of the leaves rather than on the top, since the phloem transports sugars manufactured by the plant and they are closer to the lower surface. Vascular tissue Vascular tissue is a complex conducting tissue, formed of more than one cell type, found in vascular plants. The primary components of vascular tissue are the xylem and phloem. These two tissues transport fluid and nutrients internally. There are also two meristems associated with vascular tissue: the vascular cambium and the cork cambium. All the vascular tissues within a particular plant together constitute the vascular tissue system
Xylosandrus compactus and "Melia azedarach". It is particularly damaging in tree nurseries, killing seedlings and young saplings. A study in Uganda's shaded robusta coffee systems, tree species suppressing "X. compactus" infestation characteristically exuded copious sap regardless of any stress. Therefore, the presence or absence of copious sap exuding from trees upon injury likely differentiates "X. compactus" hosts from non-hosts. In Florida, where "X. compactus" has been introduced, the life cycle is completed in about twenty-eight days. Like other ambrosia beetles, the adult female carries a fungal symbiont, in this case "Fusarium solani". This fungus attacks the xylem tissue of the plant host,