- Yerba Mat is an evergreen tree growing wild near streams of South rainforests. Its broadly toothed, leathery large leaves alternate on graceful branches with white flowers that produce small yellow, red, or black berries. It has a long history being the traditional drink of health and hospitality of the South peoples. - A native Australian evergreen rainforest tree, lemon myrtle, emits a crisp lemon scent from its large flat leaves. In summer and autumn the tree teems with nectar-rich ye