Azadirachta is a genus

Genus

In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of two species

Species

In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...

 of trees in the flowering plant

Flowering plant

The flowering plants , also known as Angiospermae or Magnoliophyta, are the most diverse group of land plants. Angiosperms are seed-producing plants like the gymnosperms and can be distinguished from the gymnosperms by a series of synapomorphies...

 family Meliaceae

Meliaceae

The Meliaceae, or the Mahogany family, is a flowering plant family of mostly trees and shrubs in the order Sapindales....

 (Mahogany family). Numerous species have been described in the genus but only two are currently recognized, A. excelsa (Jack) Jacobs, and the economically important Neem

Neem

Azadirachta indica is a tree in the mahogany family Meliaceae. It is one of two species in the genus Azadirachta, and is native to India growing in tropical and semi-tropical regions. Its fruits and seeds are the source of neem oil...

 tree, A. indica A. Juss. (Mabberley et al. 1995, Pennington & Styles 1975). Both species are native to the Indomalaysian region, and A. indica is also widely cultivated and naturalized outside its native range. The resin from the trees have been attributed with medical benefits.

These species shall not be confused with Melia azedarach

Melia azedarach

Melia azedarach is a species of deciduous tree in the mahogany family, Meliaceae, that is native to Pakistan, India, Indochina Southeast Asia and Australia...

L.