This is a perennial shrub that grows up to 80 cm (Reza Khan 1992). It flowers throughout the year but peaks between January and May (Jongbloed et al. 2003). It is a poisonous plant that grows in gravel and sand plains as well as wadis (Drew 2000, Jongbloed et al. 2003, Mahmoud et al. 2018). Its presence is known to be a sign of overgrazing as livestock avoid eating it, and so it becomes dominant in grazed areas (Feulner 2011, 2016). However, the flowers of this plant are known to be utilised by adult Plain Tiger butterflies (Gillett 1998).