In northern South America, savanna areas with waterlogged soil are known as [llanos]. Savanna vegetation in South Africa is sometimes known as [bushveld], or [veld]. African savanna grasses are either high grasses (1.5 to 4.5 m tall) or shortgrasses (30 cm tall). The trees in African savanna are usually thorny and small-leaved; many are species of [Acacia]. Groups of trees such as palms or cactuslike [Euphorbia] species and single trees such as baobabs are also common.