Trees of Saudi Arabia

Trees and shrubs are important in preserving the ecosystem of any region, particularly in areas where the vegetation is rich. The number of tree species in Saudi Arabia is only 70, which is about 3% of the total floristic elements. Out of these, more than 80% are present in the southwestern and western regions, including Taif region. Among the tree genera, Acacia contains the highest number of species (c. 15 species) followed by Commiphora (11 species).

Although tree species are widely distributed in the south western regions, only a few of them are forming into communities. Species such as Juniperus spp., Olea europaea, Acacia seyal, Acacia tortilis, Maerua crassifolia, Ziziphus spina-chriti, Tarchonanthus camphorates, etc are dominant and grow luxuriously in many parts of the Hijaz mountains. Acacias, in general, are the most dominant tree species in Saudi Arabia and elsewhere in the Arabian Peninsula.

	Acacia abyssinica Acacia asak Acacia ehrenbergiana Acacia etbaica Acacia gerrardii Acacia hamulosa Acacia latea Acacia mellifera Acacia origena Acacia raddiana Acacia seyal Acacia tortilis Acokanthera schimperi Adenium obesum Annona squamosa Asperagus flagellaris Balanites aegyptiaca Barbeya oleoides Berchemia discolor Boscia angustifolia Breonadia salicina Buddleja polystachya Capparis deciduas Catha edulis Celtis africana Combretum molle Commiphora erythraea Commiphora gileadensis Commiphora kataf Cordia africana Cordia monoica Cordia nevelli Crataegus sinaica Debregeasia saenab Delonix elata Diospyros mespiliformis Dobera glabra Dombeya torrida ssp. torrida Dracaena ombet Ehretia abyssincia Ehretia obtusifolia Erica arborea Euclea schimperi Euphorbia ammak Euphorbia parciramulosa Faidherbia albida Ficus cairica Ficus cordata ssp. Salicifolia Ficus glumosa Ficus ingens Ficus populifolia Ficus sycomorus Ficus vasta Grewia tembensis Grewia trichocarpa Hypericum revolutum Hyphaene thebaica Jatropha curcas Juniperus phoenicea Juniperus procera Lawsonia inermis Maerua crassifolia Maesa lanceolata Maytenus heterophylla Maytenus parviflora Mimusops laurifolia Moringa peregrina Myrica humilis Myrsine afrifcana Myrtus communis Nuxia congesta Nuxia oppositifolia Ochna inermis Olea europaea Oncoba spinosa Pandanus odoratissimus Phoenix caespitosa Phoenix dactylifera Phoenix reclinata Pistacia falcata Pittosporum viridiflorum ssp. arabicum Prosopis juliflora Prosopis koelziana Psydrax schimperiana Rhizophora mucronata Rhus natalenis Rhus retinorrhea Salix acmophylla Salix mucronata Sideroxylon oxyacanthum Syzygium guineense Tamarindus indica Tamarix aphylla Tamarix passerinoides var. macrocarpa Tarchonanthus camphoratus Teclea nobilis Terminalia brownii Trema orientalis Trichelia emetica Ziziphus glabrata Ziziphus mucronata Ziziphus spina-christi	Mimosaceae Mimosaceae Mimosaceae Mimosaceae Mimosaceae Mimosaceae Mimosaceae Mimosaceae Mimosaceae Mimosaceae Mimosaceae Mimosaceae Apocynaceae Apocynaceae Annonaceae Asperagaceae Zygophyllaceae Barbeyaceae Rhamnaceae Capparaceae Rubiaceae Buddlejaceae Capparaceae Celastraceae Ulmaceae Combretaceae Burseraceae Burseraceae Burseraceae Boraginaceae Boraginaceae Boraginaceae Rosaceae Urticaceae Caesalpiniaceae Ebenaceae Salvadoraceae Sterculiaceae Dracaenaceae Boraginaceae Boraginaceae Ericaceae Ebenaceae Euphorbiaceae Euphorbiaceae Mimosaceae Moraceae Moraceae Moraceae Moraceae Moraceae Moraceae Moraceae Tiliaceae Tiliaceae Hypericaceae Palmaceae Euphorbiaceae Cupressaceae Cupressaceae Lythraceae Capparaceae Myrsinaceae Celastraceae Celastraceae Sapotaceae Moringaceae Myricaceae Myrsinaceae Myrtaceae Buddlejaceae Buddlejaceae Ochnaceae Oleaceae Flacourtiaceae Pandanaceae Palmaceae Palmaceae Palmaceae Anacardiaceae Pittospraceae Mimosaceae Mimosaceae Rubiaceae Rhizophoraceae Anacardiaceae Anacardiaceae Salicaceae Salicaceae Sapotaceae Myrtaceae Caesalpiniaceae Tamaricaceae Tamaricaceae Asteraceae Rutaceae Combretaceae Ulmaceae Meliaceae Rhamnaceae Rhamnaceae Rhamnaceae