Barleria greenii is a much branched shrub reaching heights between 80 cm and 1,8 m.

Its leaves are smooth, dark green and shiny above. There is a recurved hook at the leaf tip. Growing on a short stalk, the leaf becomes 3 cm long and 1 cm wide.

The plant bears pretty pink or white flowers inclusters of four to six from leaf axils near stem tips. The buds are sweetly scented at night. Flower diameter is about 4 cm. Pollination is done by moths. Blooming done, fruits have formed on the plant in picture (Pooley, 1998).