The floral wealth of Rajasthan is rich and varied. The western half is desert terrain, most of the area under forests is restricted to eastern and southern parts of the state. The forests are unevenly distributed in the various districts Most of the forests are over the hilly areas i.e. in Udaipur, Rajasamand, Kota, Baran Sawai Madhopur, Chittorgarh, Sirohi, Bundi, Alwar, Jhalawar and Banswara districts, which make up for about 50 per cent of the forests of the state. Dense natural forests are in protected patches, mostly confined to various national parks and wild-life sanctuaries. Most of the remaining forests of state are in various stages of plant growth. The forests of state can be divided into four broad forest types.
(1) Tropical Thorn Forests,
(2) Tropical Dry Deciduous Forests, and
(3) Central India Sub-tropical hill forests.
(4) Mixed Miscellaneous Forests
Tropical Thorn Forests
Tropical thorn forests are found in arid and semi-arid regions of western Rajasthan . These extend from western Indo -Park border and gradually merge with the dry deciduous mixed forests of the Aravalli hills and the south-eastern plateau. The main species found in this kind of forests areAcacia nilotica , Acacia leucophloea, Prosopis cineraria, Capparis aphylla, Zizyphus spp., Flacourtia spp. etc. These forests are basically found in western part of Rajasthan namely Jodhpur, Pali, Jalore, Barmer, Nagaur, Churu, Bikaner etc.
Tropical Dry Deciduous Forests
These forests are mostly found in small patches in few parts of the state. the northern and eastern slopes of aravalli ranges, mostly in Alwar, Bharatpur and Dholpur districts, are covered with this type of forests. Sporadic growth of certain species of dry deciduous forests is found along the dry river beds of Jalore, Nagaur, Ganaganagar and Bikaner, districts.The main species found in this kind of forests are Anogeissus pendula, Anogeissus latifolia, Acacia catechu, Terminalia tomentosa, Terminalia balerica, Terminalia arjuna, Boswellia serrata, Dendrocalamus strictus, Lanea grandis.
Central Indian Sub - tropical Hill Forests
These forests which are most abundant in central India, as in Madhya Pradesh, parts of Gujarat and Maharashtra, are found in Sirohi district of Rajasthan also, mostly on the hills girding Mt. Abu. These forests have semi-evergreen and some evergreen species of trees. The vegetation of Mt. Abu consists of many plants which are similar to the sub - tropical region of Himalayas. Around Mt. Abu, they are well represented between 700 to 800 m altitudes.
Mixed Miscellaneous Forests
These forests are mostely found in south easten and easten part of Rajasthan comprising Chittorgarh, Kota, Udaipur, Sirohi, Banswara, Dungarpur, Baran and Jhalawar distrists.
These Forests mainly have Anogeissus pendula, Anogeissus latifolia, Terminalia tomentosa, Terminalia arjuna , Terminalia chebula, Albizia lebbeck, Dalbergia paniculata etc. and its associates.