From the most common trioka with Prospis juliflora (Vilaiti Keekar) & Acacia nilotica (Babool), found in Hodal & around it. Pictures taken at Hodal in Distt. Faridabad, Haryana in Nov.'07.
Prosopis cineraria
tree occurs in the dry and arid regions of India. It is one of the chief indigenous trees of the plains of the Punjab, Western Rajasthan and Gujarat and is common in
Bundelkhand and the neighborhoods of
Delhi and
Agra.
Prosopis cineraria is a small moderate sized
evergreen thorny tree, with slender branches armed with conical thorns and with light bluish-green foliage. The leaflets are dark green with thin casting of light shade. It coppices
profusely.The tree is
evergreen or nearly so. It produces new flush leaves before summer. The flowers are small in size and yellow or creamy white in colour, appear from March to May after the new flush of leaves. The pods are formed soon thereafter and grow rapidly in size attaining full size in about two months
time.Historically
Prosopis cineraria has played a significant role in the rural
economy in the northwest arid region of Indian sub-continent. This tree is a
legume and it improves soil fertility. It is an important constituent of the vegetation system. It is well adapted to the arid conditions and stands well to the adverse vagaries of climate and browsing by animals. Camels and goats readily browse it. In areas open to goat browsing, the young plants assume cauliflower shaped bushy appearance.
The above details taken from Wikipedia link (which is also contains lot of other interesting details) below: