Melia azedarach, commonly known by many names, including chinaberry tree Pride of India bead-tree, Cape lilac syringa berrytree Persian lilac and Indian lilac, is a species of deciduous tree in the mahogany family, Meliaceae, that is native to Indomalaya and Australasia.
https://en.wikipedia.org/wiki/Melia_azedarach Melia Azadirachta - large semi-evergreen tree of the East Indies; trunk exudes a tenacious gum; bitter bark usedas a tonic; seeds yield an aromatic oil; sometimes placed in genus Melia .
Google images isn't very good choise to compare species. You must firstly to fing initial descriptions of these species and after this check the scientific validity of the names of these taxa. Easiest way to do this is to use http://www.ipni.org/ipni/plantnamesearchpage.do or http://www.catalogueoflife.org/col/search/scientific
So, Melia azedarach L. is accepted name, but Melia azedirachta L. is a nomenclatural synonim to Azadirachta indica A.Juss.
These are separate species. Melia azedarch has globose fuits bearing 3-6 seeds. Its fruit is not edible. Melia azadirachta (valid name is Azadirachta indica) has oblong, one-seeded, edible fruit and is an important medicinal plant.
Hi Merish - You can check http://www.theplantlist.org/ for valid/accepted name for species. In addition, synonym of species is also provided. Regarding Melia species both are from Meliaceae family. Melia azadirach L is accepted name while Melia azadirachta L. is a synonym of Azadirachta indica A.Juss.
Both the plants are different entirely. Azadirachta indica A. Juss. commonly known as neem, is native of India and naturalized in most of tropical and subtropical countries are of great medicinal value and distributed widespread in the world. Azadirachta indica is derived from the Persian name Azad-Darakht-E-Hind, literally means: ‘The Free Tree of India’.
The leaves are compound, imparipinnate, each comprising 5-15 leaflets. The compound leaves are themselves alternating with one another. Fruits are green, turning yellow on ripening, aromatic with garlic like odour. Fresh leaves and flowers come in March-April. Fruits mature between April and August depending upon locality
Melia azedarach L. is a deciduous tree up to 45 m tall; bole fluted below when old, up to 30-60 (max. 120) cm in diameter, with a spreading crown and sparsely branched limbs. Bark smooth, greenish-brown when young, turning grey and fissured with age. Bangladesh, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Pakistan, Papua New Guinea, Sri Lanka, Thailand, Vietnam. Because of the divided leaves, the generic name is derived from the Greek ‘melia’ (the ash); the specific name comes from the Persian ‘azzadirackt’ (noble tree).
Leaves alternate, 20-40 cm long, bipinnate or occasionally tripinnate. Leaflets 3-11, serrate and with a pungent odour when crushed. Fruit a small, yellow drupe, nearly round, about 15 mm in diameter, smooth and becoming a little shrivelled, slightly fleshy. Seed oblongoid, 3.5 mm x 1.6 mm, smooth, brown and surrounded by pulp.
Melia azadirachta is a synonym for Azadirachta indica (neem tree). According to The Plant List, Azadirachta indica is an accepted name (http://www.theplantlist.org/tpl/record/kew-2667002).
Melia azedarach (https://en.wikipedia.org/wiki/Melia_azedarach) and Azadirachta indica (https://en.wikipedia.org/wiki/Azadirachta_indica) are two different tree species belonging to family Meliaceae. Melia azedarach is a deciduous tree species while Azadirachta indica (=Melia azadirachta) is an evergreen tree species.
Melia azedarach, commonly known by many names, including chinaberry tree Pride of India bead-tree, Cape lilac syringa berrytree Persian lilac and Indian lilac, is a species of deciduous tree in the mahogany family, Meliaceae, that is native to Indomalaya and Australasia.
https://en.wikipedia.org/wiki/Melia_azedarach Melia Azadirachta - large semi-evergreen tree of the East Indies; trunk exudes a tenacious gum; bitter bark usedas a tonic; seeds yield an aromatic oil; sometimes placed in genus Melia .