Pests > Pests Entities > Weeds > Polygonum spp., north Sri Lanka

It was identified as either Polygonum barbatum or P. pulchrum.

1. Pancho, J.V. and M. Soerjani. 1978. Aquatic weeds of Southeast Asia. SEAMEO Center of Tropical Biology (BIOtrOP), Bogor, Indonesia.
2. Cook, C.D.K. 1996. Aquatic and wetland plants of India. Oxford University Press, Oxford, New York, Delhi.