Within the eastern UAE, this is a common and widespread species in the Hajar Mountains (Jongbloed et al. 2003) and Jebel Hafeet (Fawzi and Ksiksi 2012), which can be found from sea level to 1,000 m (MEW 2010). Feulner (2011) reported it to c.1,500 m, although it is more common at low to medium altitudes. Its global distribution is from the Arabian Peninsula to southern Iran and Pakistan (Board of Trustees, RBG Kew 2019).

Within the UAE, it is found from Sweihan, in the centre of the country, towards the sand dunes around Sabkha Matti, in the far west of the country (Jongbloed et al. 2003, G.R. Feulner in litt., MEW 2010). This species is native to the Arabian Peninsula and northwest China (Board of Trustees, RBG Kew 2019).

This species is found widespread in several scattered locations throughout the UAE (Jongbloed et al. 2003, MEW 2010). It is recorded from Abu Dhabi Emirate (Brown and Sakkir 2004). The species is globally distributed in the tropical and subtropical Old World and widely introduced in the Americas and in Europe (Board of Trustees, RBG Kew 2018). The origin of the species is uncertain, and it is possibly native to Southeast Asia and/or Africa (BioNET-EAFRINET 2011, CABI 2019).

Within the UAE, the species is moderately widespread (Jongbloed et al. 2003) along the northern Arabian Gulf north to Ras al Khaimah (Western 1983) and east coasts, Al Ain (Mousa and Fawzi 2009), and on Das Island. The species is also found in Wadi Wurayah National Park (WWNP), where it is a ruderal species seen at donkey resting sites and formerly inhabited terraces, probably facilitated by man and domestic animals (Feulner 2016), and also in the Ru'us al-Jibal, again associated with disturbed ground, trails, and cultivation (Feulner 2011). This species has been considered introduced to the UAE (Pagad et al. 2017), but the majority of the of the UAE native plant working group (June 2019) considered the species to be native and so it is assessed here as such. This species is considered native to large areas of Europe, North and East Africa, the Arabian Peninsula and South Asia by Plants of the World Online (Board of Trustees, RBG Kew 2019). However, CABI (2018) consider the species to probably be native to the Mediterranean region, although it has been widely introduced globally.

This species is widespread and common in sands (Jongbloed et al. 2003, MEW 2010, Al Meharibi et al. 2019). The western region of Abu Dhabi Emirate is dominated by this species (Sakkir et al. 2012). Feulner (2016) recorded this species in small numbers at a few localities in Wadi Wurayah National Park, which are likely the result of anthropogenic movement. Regarding global distribution, this plant species is native across western Africa to north-eastern Africa, through the Arabian Peninsula, to India (Board of Trustees, RBG Kew 2018).

This species is widespread on the slopes and foothills of the Hajar Mountains in the UAE. It is also found, although less common, in the Ru'us al-Jibal where it occurs up to 1,550 m asl (Feulner 2011), and it is present on Jebel Hafeet (Jongbloed et al. 2003). This species has been recorded from the Wadi Wurayah National Park (Feulner 2016). The native range is Egypt and the eastern Mediterranean, through the Arabian Peninsula, to Pakistan and Arabian Peninsula (Board of Trustees, RBG Kew 2019).

In the UAE, this species is widespread in the Hajar Mountains (Jongbloed et al. 2003), extending south to Jebel Hafeet (<a href=""http://data.rbge.org.uk/herb/E00437366"">RBGE Herbarium</a>; lower slopes close to Al Ain, coll. R.A. Western, 1982), and also occurring, rarely, in the Ru'us al-Jibal, with three localities known at low altitudes (Feulner 2011). The global range of this species is across northern Africa, through the Arabian Peninsula, to north-west India (Board of Trustees, RBG Kew 2019).

In the UAE, the species is widespread in the Hajar Mountains (Jongbloed et al. 2003) and also occurs on Jebel Hafeet (Sakkir and Brown 2014), and in the Al Ain area, including Wadi Al Ain (Mousa and Fawzi 2009). Records of the species from the Ru'us al-Jibal are thought to be erroneous (Feulner 2011). The global range of this species is from north-east Africa to the Arabian Peninsula (Board of Trustees, RBG Kew 2019).

In the UAE, this species is restricted to the Ru'us al-Jibal (Jongbloed et al. 2003, MEW 2010), from c.250 m to at least 1,200 m asl (Feulner 2011). The EOO is estimated at less than 500 km², however the AOO cannot be estimated as detailed locality data are not available. The species is primarily found in cultivated areas, but is found in other habitats. The native range of this species is from Macaronesia, through northern Africa and Europe to Afghanistan and the Arabian Peninsula (although the UAE and Oman are not cited; Board of Trustees, RBG Kew 2019). The species has been widely introduced.

It is described as being widespread and a major vegetation element in the western part of the UAE (Böer and Chaudhary 1999). Feulner states that this species is found in the northern Emirates, as it is not found in large dunes to the south or in Abu Dhabi (G.R. Feulner, in litt, MEW 2010). The native range of this species spreads from the Sahara to northwest India (Board of Trustees, RBG Kew 2019).