Cratylia argentea (Desv.) Kuntze is a tropical legume. It is a perennial, deep-rooting shrub reaching between 1.5 and 3 m in height. When associated with taller plants it can show a somewhat voluble habit. However, trees of up to 6 m have been found as well as completely prostrate plants. Leaves are trifoliolate; leaflets are broadly ovate with a silvery pubescence on their under surface. Flowers are arranged in an elongated, many-noded pseudoraceme up to 30 cm long, with 6-9 flowers per node. Size of flowers ranges from 1.5-3 cm (length and width); petals are lilac or, very exceptionally, white. Pods are straight, flat, up to 20 cm long and 1-2 cm broad, dehiscent, containing 4-8 oval to almost circular seeds of about 1.5 cm diameter. Seeds are dark yellow to brown, when maturing under high-humidity conditions, dark brown. Thousand seed weight is about 220 g, i.e. there are about 4,500 seeds/kg (Cook et al., 2005).