Biodiversity of Sri Lanka

An indigenous annual herb common among grasses in soggy, clayey soil beside water courses and paddy fields from wet lowlands to about 150...

Giant unbranched herb common in open grassy slopes at altitude between 650-1400 m. Flowering from December to April.

An indigenous annual herb common in shady and moist places of  hill country. Flowering January to October.

Native plant of West Indies . Introduced and naturalized in moist places such as roadside ditches, paddy fields, dilapidated walls and ba...