Mecardonia procumbens

An introduced decumbent or erect herb grows on open, frequently wet places such as margins of paddy fields. Native to tropical and sub tropical America. A recent introduction to Sri Lanka and naturalized in some places in the Knuckles Range.  

රැවුල් පුරුක් විල[Rewul Puruk Wila]/Giant Ambulia (Limnophila aquatica)

An indigenous herb common in marshy ponds, margins of tanks, flooded paddy fields in wet and dry lowlands. Flowering from March to December.

Thyme leaved Speedwell (Veronica serpyllifolia)

An introduced herb native to Eurasia. Common in the lawns, roadsides, cultivated grounds and rocky hill tops in the upper hill country above 1800 m a.s.l.

Plantago asiatica subsp. erosa

An indigenous perennial herb grows along roadsides, open places and cultivated lands in the montane and upper montane areas. Flowering throughout the year.  

Ribwort Plantain (Plantago lanceolata)

An introduced perennial herb native to Europe and north and central Asian countries. Naturalized in grassy places, forest edges, roadsides and as a weed in cultivated fields of the upper montane zone. Flowering throughout the year. Common around the Nuwaraeliya. 

Whorled twintip (Stemodia verticillata)

An introduced annual herb native to tropical America. Naturalized in cultivated grounds and roadsides of the hill country. Flowering from July to December.
Flower size - About 0.3 cm across.

අඹවිල [Amba wila] (Limnophila repens)

An indigenous decumbent or erect herb widespread in paddy fields, marshlands, etc. from wet lowlands to lower hills. Occasionally also occurs in the wet places of the dry lowlands. Flowering throughout the year.  

කහ ගෝන කොළ [Kaha Gona Kola] (Adenosma camphorata)

An endemic herb occurs in damp places close to ditches or a watercourse in the wet lowlands below 700 m a.s.l. Flowering from March to December*.

*Flowers observed end of January of  plants growing along the roadside of a fragmented wet lowland forest patch. 

ලුනුවිල[Lunuwila]/Water hyssop/Thyme leaved gratiola(Bacopa monnieri)

Common indigenous herb with creeping stems. Occurs in open marshy lands and along banks of ponds and creeks of the lowlands. Usually close to the coast. Flowering throughout the year. Used in Ayurvedic medicine. 

Dopatrium nudicaule

 An indigenous herb grows among short grasses in wet places in the lowlands and wet hills up to about 500 m. Common on wet rocky surfaces and sometime also found in paddy fields. Flowering from November to July.