1) Genus leucaena 2) Rosid dicot genus 
Leucaena is a genus of flowering plants in the subfamily Mimosoideae of the legume family Fabaceae. It contains about 24 species of trees and shrubs, which are commonly known as Leadtrees. They are native to the Americas, ranging from Texas in the United States south to Peru. The generic name is derived from the Greek word λευκός (leukos), m...
(from the article `Fabales`) Various forms of leucaena (Leucaena leucocephala) have been developed for animal forage, firewood, and construction, as well as for the high ...
[n] - small genus of tropical evergreen trees or shrubs having pods like those of the acacia
genus Leucaena noun small genus of tropical evergreen trees or shrubs having pods like those of the acacia