Medicinal Plants of Bangladesh
Medicinal Plants Database of Bangladesh includes the authentic Taxonomic Information, Vernacular/Bangla Name, Tribal and English Name, Family, Description and Photograph of the Plants, Chemical Constituents, Uses and Distribution of the species in Bangladesh. MPBD also contain dictionary of Botanical and Pharmacological terms.
Bengali/Vernacular Name: Mankachu.
English Name: Great-leaved Caledium, Giant Taro.
A robust herb with long, cylindrical caudex, up to 1.8 m. Leaves large 60-90 cm long, triangular-sagittate. Peduncle shorter than the petiole, spathe 20-30 cm, pale yellow, spadix equaling the spathe.
The rootstock is cooling, mild laxative and diuretic; useful in piles, habitual constipation, inflammations, rheumatism, leprosy, anasarca, jaundice, diseases of spleen. The ash of the rootstocks mixed with honey is used in cases of aphthae. The leaf Juice is astringent. In Chittagong Hill Tracs the rootstock is used in diarrhoea and stomachache by the Tanchangya.
Leaves, stalks, tubers and roots have a high content of soluble oxalates in the form of acicular crystal. All parts of the plant except the tuber contain cyanogenetic principles, a mixture of triglochinin and isotriglochinin and hydrolyzing enzymes. The plant also contains a flavone and a saponin and the petioles contain up to 0.018% of HCN. A glycoprotein lectin, hemagglutinin, is present in the rhizome. It also contains glucose, fructose, a phytosterol-like compound and an alkaloid (Ghani, 2003).
Cultivated all over Bangladesh.