Senecio gardneri

An endemic perennial herb considered to be critically endangered and possibly extinct according to the National Red List 2012 of Sri Lanka. Earlier records available from Adam's peak, Ambagamuwa, Upcot and  Meeriacotta estate of Central hills. Flowering from December to March. We have observed and photographed this rare plant at Kuru ganga upper basin area (1200 m) of Sripada World Heritage site (Adam's peak or Peak wilderness sanctuary) on 15th February 2014.

Eleutheranthera ruderalis

Common introduced weed occurs in abandoned lands, cultivated grounds, roadsides, etc. Native to the tropical America. Flowering from November to May and possibly throughout the year. This grows in much the same habitats as, and closely resembles Nodeweed (Synedrella nodiflora)

මොණරකුඩුම්බිය/මගුල් කුඹුරු වැන්න[Monarakudumbiya/Mangul kumburu venna] (Cyanthillium cinereum [Syn: Vernonia cinerea])

An indigenous erect or deumbent annual herb common along roadsides and waste grounds in all climatic zones from lowlands to higher hills. Flowering throughout the year.

Senecio ludens

An indigenous herb common in moist places at roadsides, on patanas and forest shrub above 1200 m. Flowering from October to April and possibly all the year round.  

Toothache Plant (Acmella oleracea)

An introduced herb probably native to the Brazil. Cultivated and perhaps locally escaped. 

Pseudognaphalium luteoalbum [Syn: Helichrysum luteoalbum/Laphangium luteoalbum/Gnaphalium luteo-album]

Common weed of tea plantations and roadsides above 1000 m a.s.l. Probably indigenous though there are not herbarium collection earlier than 1906. Also distributed in India, Indo-china,China,Japan, Philippine and Australia. Flowering throughout the year.

Siam weed/Devil weed/Common floss flower (Chromolaena odorata [Eupatorium odoratum])

An introduced large herb native to tropical South America. It was first introduced an ornamental at Peradeniya botanical garden in 1884 where it subsequently dead out. When it was next introduced is not recorded but during 1937-1947 it became naturalized in Balangoda  Ratnapura area and spread rapidly up to extend that it was considered as a dangerous weed in 1944. It is now listed as an invasive which is very common along roadsides, waste grounds and forest clearings at lower elevations. Flowering from January to July. 

Creeping daisy(Sphagneticola trilobata[Wedelia trilobata])

An introduced procumbent herb native to northern part of South America and the West indies. Naturalized and now a very common weed growing in dense mats along roadsides and waste lands from sea level to about 1500 m elevations. 

Nodeweed (Synedrella nodiflora)

Native herb of West Indies. Introduced and now a common weed along roadsides, waste places and cultivated grounds. Flowering from August to May and probably all the year round.

Erigeron sublyratus

Rather rare indigenous annual herb occurs in sandy places of the low country, often near water courses or close to the sea shore. Flowering September- December.

Kurunegala Daisy/Coat-buttons(Tridax procumbens)

An introduced perennial with procumbent stems. Native to Central America. Common weed of roadsides, wastelands, lawns and cultivated grounds. Flowering occurs throughout the year.

Youth and Age (Zinnia elegans)

Native herb of Mexico. Introduced as an ornamental plant and cultivated in gardens. Also escaped and perhaps naturalized in the waste grounds and margins of fields. 

Moonia heterophylla

An indigenous herb occurs along forest margins, usually in shady situations from 1800 to 2400m elevations. Flowering from October to June and probably throughout the year.

Austroeupatorium inulifolium [Eupatorium inulifolium]

An introduced large herb native to tropical America. Rather common weed mainly in the hill country.

හුලංතලා/කඩුපහර[Hulan-tala/Kadupara] (Emilia exserta)

An indigenous herb found on disturbed places, patanas and road embankments from low to middle elevations.

පුපුල/Pupula (Psiadia ceylanica)

An indigenous shrub common in the hill country grasslands and scrublands. Flowering throughout the year.

වතු පාලු/ගම් පාලු/ලෝක පාලු/කෙහෙල් පාලු/මහ කිහිඹිය/Vatu-Palu/Kehel-Palu/Gam-Palu/Loka-Palu/Maha-Kihimbiya/Mile-a-minute (Mikania cordata)

An introduced (Native? >>) and very common creeping and climbing herb often growing over and covering other plants and shrubs. It is a weed of forest edges, roadsides, waste lands and secondary forests. Flowering from October to March. Native to tropical Asia, Philippines and New Guinea. 

Marsh daisy/කීකිරිඳී/සින්ධු කිරිඳි[Kikirindi/Sindu-kirindi] (Eclipta prostrata)

An introduced herb found in paddy fields, tank edges, waste places etc. Flowering throughout the year. Stem reddish and white hairs on leaves.

Brazilian button flower/Brazilian daisy/Pineapple flower/Porcupine flower(Centratherum punctatum)

Brazilian button flower is probably a recently naturalized plant common in waste places and roadsides in lowlands and higher hills. (de Vlas J. & J., 2008) A native of tropical America.

කීර තන්ඩු පිල්ලු[Keera-thandu-pillu]/Thickhead (Crassocephalum crepidioides)

 Widespread introduced weed of roadsides, waste lands and scrub-lands throughout the island. It is a native plant of tropical Africa.