In the UAE, this species occurs the mountainous parts of the UAE, in the vicinity of Jebel Hafeet (Sakkir and Brown 2014), the Hajar Mountains, and the Ru'us al-Jibal (Wadi Bih [Feulner 2011]; the actual record is from within Oman, but considered likely to also be present within the UAE). Feulner (2016) recorded a single dry specimen from gravel terrace above Wadi Ghayl in Wadi Wurayah. RBG Edinburgh Herbarium holds two specimens of this species, including one from the alluvial outwash of <a href=""http://data.rbge.org.uk/herb/E00358219"">Wadi Al Qawr and Wadi Hatta</a>. It is generally found at lower elevations (G.R. Feulner pers. comm. 2019). G.R. Brown (pers. comm. 2020) observed large numbers of the species in Umm Al Quwain, Sharjah, and again in Al Ain, and considers it to also be common locally in the mountains. Al Meharibi et al. (2019) consider the species to be restricted to wadis on Jebel Hafeet. The species has an apparently global natural distribution according to Plants of the World online (Board of Trustees, RBG Kew 2018), which considers it to be native to large parts of Africa, temperate Asia to the Indian Subcontinent, and the Americas (west-central U.S.A. to Mexico, and from Peru to Argentina). It is introduced/naturalised to Hawai'i and the UK, and probably elsewhere. It is considered a weed by some references (e.g. Randall 2012).