DIOSOCOREA PENTAPHYLLA L.

Family: Dioscoreaceae

Bengali/vernacular name: Suaralu, Jhumalu, Jhunihana lata.
Tribal name: Bhutta lodi (Chakma); Bow Su Da Uo (Marma).
English name: Yam.

Description of the plant:
A considerable climber, tuber oblong, 1.5-1.8 m; stem slender, prickly towards the base, often bulbiferous in the leaf-axils. Leaves alternate, 3-5 foliolate, 5-12.5 cm long, elliptic-lanceolate, ovate or obovate, acuminate. Male flowers greenish in slender pendulous racemes, 2.5-3.8 cm long, solitary or in fascicle, along the branches of a panicle, 15-30 cm long. Female flowers in axillary pendulous spikes, 5-15 cm long. Capsule quadrately oblong, 2-2.5 cm long.

Using information:
Tubers are tonic; used in swelling, rheumatism and as hair wash for killing lice. Plant is used in dropsy and anasarca. Paste of the plant mixed with oil is used to treat rheumatic pain by the Chakma (Yusuf et al. 2009).

EtOH(50%) extract of the plant showed anti-inflammatory activity (Asolkar et al., 1992).


DIOSOCOREA PENTAPHYLLA
DIOSOCOREA PENTAPHYLLA L.


Chemical constituents:
Tubers contain alkaloid dioscorine (Asolkar et al., 1992) and up to 80.77% carbohydrates (Anon 1952).

Distribution:
Forests of Chittagong, Chittagong Hill Tracts, Sylhet, Dhaka and other places.