Cajanus bicolor DC.
Cajanus flavus DC.
Cajanus indicus Spreng.
Cytisus cajan L.
Family: Fabaceae - Pea family
Growth Habit: Shrub
Bangla/Vernacular Name: Arhar, Arhardal, Tur, Aral.
Tribal Name: Flaying (Murang), Hayanko (Rakhaing).
English Name: Pigeon Pea, Red Gram, Congo Pea.
An erect bushy shrub up to 3 m high. Leaves trifoliate, leaflets oblong-lanceolate, densely silky beneath. Flowers yellow, in loose corymbose racemes or forming a terminal panicle; Corolla three times the calyx; standard yellow or veined with red. Pod oblong, finely downy.
Leaves contain phytoalexins, sterols, triterpens and other lipidic constituents. Roots contain antifungal isoflavone, cajanone, cajaflavone, methyl cajanone, cajaisoflavone, an isoflavone glucosides, genistein, an anthraquinone derivative, cajaquinone, sitosterol and its glucosides, lupeol and amyrins. Cajaquinone, an anthraquinone derivative have also been isolated form the roots. Tender red pods contain carbohydrates, protein, fats, vitamins A, B and C, carotene, minerals and amino acids. Constituents of the seeds are similar to those of the pods and they are rich sources of vitamin B6, folic acid, tocopherol, minerals, amino acids and plant acids. They also contain enzymes and isoflavones. Essential oil from plant contains a-, ß-and ?-selinenes, copaene and a mixture of eudesmols (Ghani, 2003).
Cajanus cajan (L.) Millsp.
Cultivated throughout Bangladesh.