Umbrella papyrus/Umbrella sedge (Cyperus alternifolius)

An introduced tall perennial, native to the tropical Africa and Arabia. Widely cultivated as an ornamental and also escaped and naturalized in grassy places. 

දේවදාර/ඊ පෙත්ත/ඕවිළ/ඕලිල[Devadara/I Petta/O lila/O wila](Monoon longifolium [Syn: Polyalthia longifolia])

An indigenous tree of dry zone gallery forests along the east coast. The columnar form with pendent branches is often planted in gardens and along roads. 

සිරි වැඩි බැවිල/ගිරි වැඩි බැවිල[Siriwedi Bevila/Giriwadi Bevila] (Sida mysorensis)

An indigenous perennial herb found in waste places, roadsides and in secondary vegetation up to about 700 m a.s.l. 

අනිත්ත[Aniththa] (Rhinacanthus flavovirens)

Rhinacanthus flavovirens is a recently described endemic perennial herb distributed in secondary forests of North Central, Central and Southern province dry lowlands. It occurs under shade of trees close to watercourses.

Reference : Amarasinghe A.P.P.R.& Wijesundara D.S.A., 2011, A new species of rhinacanthus (Acanthaceae) from Sri lanka, Edinburge Journal of Botany 68(3): 333-337 (2011)

මහ රතඹලා[Maha Ratambala]/Torch Tree(Ixora pavetta)

Common native shrub or small tree distributed in dry deciduous forests of the low country and lower montane zones. Flowering from March to July.

මොට්ටු තණ[Mottu Tana] (Cyperus mindorensis [Syn: Kyllinga nemoralis/Kyllinga monocephala)

Very common grass like native perennial herb occurs in waste places, roadsides, home gardens and grass lands of both wet and dry lowlands up to mid hills(?)

ගල් ඇඹල[Gal Ambala] (Begonia cordifolia)

An indigenous perennial stemless herb occurs mainly in pockets of humus on rock surfaces, mostly in shade, but occasionally on exposed moist surfaces. It grows mainly in the Southeastern intermediate zone from 100 to 500 m elevations. Flowering from December to March. 

වල් තේ කොළ [Wal te kola]Ceylon tea/Spanish needle/Beggar's tick (Bidens pilosa var. pilosa)

An introduced herb native to temperate and tropical America. Naturalized in Sri Lanka and occurs as two varieties.
var. pilosa (Above pic) - Without or usually with very small white ray flowers. Only known from Peradeniya-Kandy area. Flowering from November to March.
var. minor - Very common weed of roadsides, disturbed places, cultivated grounds, etc. in the montaze zone. Flowering occurs throughout the year.

පඹුරු[Pamburu](Pamburus missionis)

An indigenous small tree, rather common in dry lowland areas. Often occurs in sandy coastal areas. Flowering in April

ගිණිහිරිය[Ginihiriya] (Breynia quadrangularis [Syn: Sauropus quadrangularis])

An indigenous shrub of dry and intermediate zones.

* Sauropus rigidus Thw. which was considered as a rare endemic species is now treated as a synonym of Sauropus quadrangularis (Willd.) Muell. Arg.

Eriocaulon ceylanicum

An endemic perennial herb grows in swampy grasslands, ditches and stream margins of the higher hills from 2000 to 2400 m elevations. Flowering from October to May.

Cordia monoica

An indigenous tree known from dry lowland forests and open areas. 

ගොඩ කදුරු[Godakaduru]/Nux-Vomica(Strychnos nux-vomica)

An indigenous tree of dry zone secondary forests and scrub lands. Whole plant medicinal. 

Grewia bracteata

An indigenous shrub or small tree grows in lower montane forests of the intermediate zone.

දියමිත්ත[Diyamitta]/Velvet leaf(Cissampelos pareira)

Common native slender woody climber occurs throughout the island up to 1200 m a.s.l. Scrambling and twining over shrubs and in trees of forests. Roots, stem and leaves are used in medicine.

Male flower (Picture) Size = 3 mm 

දොඩම් පනා[Dodam Pana](Glycosmis pentaphylla)

An indigenous shrub or small tree  found in secondary thickets and forest borders of dry and intermediate zone up to about 1000 m a.s.l.

Justicia tranquebariensis

Common native herb or small undershrub grows in light shade among rocks or in sandy ground among short grass in the dry lowlands. Flowering from January to September.

වැල් කරල් හැබ[Wel karal Haba]/Forest Burr/Creeping Cock's Comb(Pupalia lappacea var. lappacea)

An indigenous herb occurs as two varieties in the island.

•  P, l, lappacea (Above Picture) - Grows open dry places along forest edges.
•  P. l. orbiculata  - Common in the sandy places behind the shoreline.

කෙකිළි මැස්ස/කුකුළු මැස්ස[Kekili Messa/Kukulu Messa](Miliusa indica)

Common indigenous shrub or small tree widespread from sea level to about 1000 m a.s.l. in both wet and dry zone forests. But confined to the secondary vegetation in the wet zone. 

රත පඹ/රට පඹ/බඹු[Ratha Pamba/Rata Pamba/Bambu](Ipomoea quamoclit)

An introduced vine native to the tropical America. Widely cultivated in gardens as an ornamental and also escaped and naturalized in thickets and other disturbed sites.