Cyamopis tetragonolobus is an annual herb, which grows up to 2 feet. The leaves are alternate and tripinnate; the leaflets are broad-elliptical, acuminate, dentate and pubescent on both surfaces.
The flowers are in axillary, 6- to 30- flowered racemes. The structures of the flowers are arranged in groups of five. The sepals are fused and hairy on the outside; the lower calyx teeth are longer than the upper ones. The corolla is butterfly-shaped small and reddish. The fruit developing from a carpel is a legume that is upright, 2-4 inches long, and sparsely haired with 5 to 6 seeds; these have a very well developed, slimy endosperm. The plant is native to India, Australia, South Africa and the U.S. Guar Gum is the powder extracted by milling the endosperm of Cyamopsis tetragonoloba. A dry or wet milling process separates the endosperm from the seed shell.