RÉSUMÉ
The present article is the fourth in a series of review articles deal with the biology of Egyptian woody perennials. Available literatures dealt with the biology of the invasive tree Dalbergia sissoo Roxb. ex DC. in Nile Delta was reviewed. The area of natural distribution is the foothills of the Himalayas from eastern Afghanistan through Pakistan and India to Nepal. Dalbergia sissoo was introduced to Egypt by Ibrahim Basha in the age of Mohamed Ali [1805-1848] for ornamental and timber purposes. This review includes the nomenclature and taxonomy of the plant, its distribution, morphology, habitat and environment, phytomass production, control measures, propagation and management, pests and diseases, economic uses and ecological importance. Ecotypic variability among its local populations needs further studies, particularly the physiological and genetical adaptations along the prevailing environmental conditions