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Wadi Huraymala |
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. The Wadi Huraymala is comparatively a large wadi situated about 100 km from the Riyadh City (240 55`- 250 13` N to 450 56`-460 12` E). The wadi is located at an altitude of about 810 m and surrounded by Tuwayq Mountains of various heights. Since the area is in the middle of several Hillocks, the wadi receives plenty of run off water during rainy seasons. Though the Huraymala wadi is famous for its agriculture farms, it is believed that the area was once covered by a significant number of annuals and perennials The main feature of the wadi is the presence of a semi protected area on the southwestern side. Although tree felling is prevented by a Royal decree, controlled grazing and picnicking is allowed within the protected area. There are several wadis present in the study area, of which Abu Khathathah is the main wadi. In addition to Wadi Abu-Khathathah, several other wadis, such as Rumaitha, Al-Yatha and Abu-Khashabah also join the main wadi in the protected area. The wadis, which slope in the southwest to northeast direction, are the main source of runoff water from rains. A Dam is constructed just outside the protected area to collect the rain water flowing through the wadis Dense vegetation can be observed in the wadis, which is composed mainly of Acacia gerrardii, Lycium shawii and Rhazya stricta. However, the areas outside the wadis are less significant in terms of vegetation. The habitats in these areas are composed of either gravels or stones and the vegetation in these areas is sparse due to the impermeability of water and the impenetrable surface to plant roots. Here the vegetation is largely confined to the periphery of the gravel areas, where fine soil accumulate over a considerable period of time and generate a habitat suitable for certain shallow rooted annual plants. The slopes and top of the hills are also less favourable for plant growth due to exposure to wind and eroded soil. However, in certain areas such as the 'V' shaped angles of the hills, a significant number of herbaceous plants have been noticed along with a few shrubby plants like Capparis cartilaginea and Ficus cordata ssp. salicifolia. Vegetation of the plateaus and top of the hills is dominated by species such as Zygophyllum migahidii, Rhanterium epapposum, Pulicaria crispa, Lycium shawii, Gymnocarpos decandrum, Fagonia bruguieri, Diplotaxis harra, Pennisetum divisum, Stipagrostis plumosa, Pergularia tomentosa, Farsetia aegyptia, Plantago amplexicaulis, Haplophyllum tuberculatum, etc |
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Species recorded from Huraymala Region
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Acacia ehrenbergiana Hayne Acacia gerrardii Benth. ssp. gerrardii Chaudh. Acacia raddiana Savi Achillea fragrantissima (Forssk.)Sch.-Bip. Aizoon canariense L. Althaea ludwigii L. Alyssum homolocarpum (Fisch.& Mayer) Boiss. Anisosciadium lanatum Boiss. Anthemis deserti Boiss. Anvillea garcinii (Burm.f.)DC. Arnebia hispidissima (Lehm.) DC. Artemisia sieberi Besser Asphodelus tenuifolius Cav. Asteriscus heirochunticus (Michon) Wik. Astragalus corrugatus Bertol. Astragalus sieberi DC. Astragalus spinosa (Forssk.) Muschl Atractylis arabica Rech.f. Avena fatua L. Bassia eriophora (Schrad.) Aschers Blepharis ciliaris (L.) B.L. Burtt. Bromus pulchellus Fig & De Not Capparis cartilaginea Decne. Carthamus oxycantha M.B. Caylusea hexagyna (Forssk.) M.L. Green Cenchrus ciliaris L. Centaurea bruguierana (DC.) Hand.-Mazz. Chrozophora oblongifoia (Del.) A. Juss. Citrullus colocynthis (L.) Schrad. Cleome amblyocarpa Barrate & Murb. Cleome rupicola Vicary Convolvulus oxyphyllus ssp. oxycladus Rech.f. Convolvulus pilosellifolius Desr. Cucumis prophetarum L. Cuscuta campestris Yncker Cynodon dactylon (L.) Pers. Diplotaxis harra (Forssk.) Boiss. Ducrosia anethifolia (DC.) Boiss. Echinops spinosissimus Turra Echium arabicum R.Mill. Emex spinosa (L.) Campd. Enneapogon desvauxii P. Beauv. Ephedra foliata Boiss. Eragrostis barrelieri Dav. Erodium laciniatum (Cav.) Willd. Euphorbia granulata Forssk. Euphorbia retusa Forssk. Fagonia bruguieri DC. Fagonia glutinosa Del. Fagonia indica Burm.f.. Farsetia aegyptia Turra Ficus cordata ssp. salicifolia (Vahl.) Berg. Filago desertorum Pomel Gastrocotyle hispida (Forssk.) Bge. Gymnocarpos decandrum Forssk. Gypsophila capillaris (Forssk.) C.Chr. Halothamnus iraqensis Botsch. Haplophyllum tuberculatum (Forssk.) A.Juss. Helianthemum lippii (L.) Dum.-Cours Heliotropium bacciferum Forssk. Herniaria hirsuta L. Hordeum murinum L. Hyparrhenia hirta (L.) Stapf. Ifloga spicata (Forssk.) Sch.-Bip. Koelpinia linearis Pall. Launaea angustifolia (Desf.) O. Kuntze Launaea capitata (Spreng.) Dandy Launaea mucronata (Forssk. Muschl. Lepidium aucheri Boiss. Lycium shawii Roem. Et Shult. Malva parviflora L. Medicago laciniata (L.) Mill. Moricandia sinaica (Boiss.) Boiss. Notoceras bicorne (Aiton) Amo Ochradenus baccatus Del. Oligomeris linifolia (Vahl) Macbride Panicum turgidum Forssk. Paronychia arabica (L.) DC. Pennisetum divisum (Gmel.) Henr. Pergularia tomentosa L. Phalaris minor Retz. Picris babylonica Hand.-Mazz. Plantago amplexicaulis Cav. Pantago boissieri Hausskn. et Bornm. Plantago ciliata Desf. Plantago ovata Forssk. Poa annua L. Polycarpaea repens (Forssk.) Asch. & Sch. Portulaca oleracea L. Pulicaria crispa (Forssk.) Benth. Reichardia tingitana(L.) Roth. Reseda muricata Presl. Rhanterium epapposum Oliv. Rhazya stricta Decne Rostraria cristata (L.) Tzvelev Rumex vesicarius L. Salsola sp. Salvia aegyptiaca L. Salvia spinosa L. Savignya parviflora (Del.) Webb. Scabiosa oliveri Coult. Sclercephalus arabicus Boiss. Scorzonera musillii Vel. Scrophularia deserti Del. Senecio glaucus L. Silene arabica Boiss. Silene linearis Decne. Sisymbrium erysimoides Desf. Sonchus oleraceus L. Stipa capensis Thunb. Stipagrostis plumosa (L.) Munro Tamarix aphylla (L.) Karst. Tetrapogon villosus Desf. Teucrium oliverianum Ging. Teucrium polium L. Tribulus terrestris L. Trigonella anguina Del. Trigonella hamosa L. Trigonella stellata Forssk. Tripleurospermum auriculatum(Boiss.) Rech.f. Volutaria lippii (L.)Cass. Zilla spinosa Prantl Ziziphus spina-christi (L.) Willd. Zoegea purpurea Fresen. Zygophyllum propinquum ssp. migahidii (Hadidi) J.Thomas et al. |
Mimosaceae Mimosaceae Mimosaceae Asteraceae Aizoaceae Malvaceae Brassicaceae Apiaceae Asteraceae Asteraceae Boraginaceae Asteraceae Asphodelaceae Asteraceae Papilionaceae Papilionaceae Papilionaceae Asteraceae Poaceae Chenopodiaceae Acanthaceae Poaceae Capparaceae Asteraceae Resedaceae Poaceae Asteraceae Euphorbiaceae Cucurbitaceae Capparaceae Capparaceae Convolvulaceae Convolvulaceae Cucurbitaceae Cuscutaceae Poaceae Brassicaceae Apiaceae Asteraceae Boraginaceae Polygonaceae Poaceae Ephedraceae Poaceae Geraniaceae Euphorbiaceae Euphorbiaceae Zygophyllaceae Zygophyllaceae Zygophyllaceae Brassicaceae Moraceae Asteraceae Boraginaceae Caryophyllaceae Caryophyllaceae Chenopodiaceae Rutaceae Cistaceae Boraginaceae Caryophyllaceae Poaceae Poaceae Asteraceae Asteraceae Asteraceae Asteraceae Asteraceae Brassicaceae Solanaceae Malvaceae Papilionaceae Brassicaceae Brassicaceae Resedaceae Resedaceae Poaceae Caryophyllaceae Poaceae Asclepiadaceae Poaceae Asteraceae Plantaginaceae Plantaginaceae Plantaginaceae Plantaginaceae Poaceae Caryophyllaceae Portulacaceae Asteraceae Asteraceae Resedaceae Asteraceae Apocynaceae Poaceae Polygonaceae Chenopodiaceae Lamiaceae Lamiaceae Brassicaceae Dipsacaceae Caryophyllaceae Asteraceae Scrophulariaceae Asteraceae Caryophyllaceae Caryophyllaceae Brassicaceae Asteraceae Poaceae Poaceae Tamaricaceae Poaceae Lamiaceae Lamiaceae Zygophyllaceae Papilionaceae Papilionaceae Papilionaceae Asteraceae Asteraceae Brassicaceae Rhamnaceae Asteraceae
Zygophyllaceae |