නියං වැටකොළු[Niyan-vetakolu]/Smooth luffa/Sponge gourd(Cucumis melo [Syn: Luffa cylindrica])

Cultivated climbing herb with uncertain origin. Widely cultivated since young fruits are eaten as a vegetable. Also naturalized in some areas, especially near old and abandoned habitations and cultivated lands. 

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.  

අස්වැන්න [Aswenna]/Alice clover/One-leaf clover (Alysicarpus vaginalis)

Common indigenous perennial herb  occurs among short grass in open places and roadsides. 

Isodon walkeri

Rather common indigenous annual herb occurs in shaded or semi-exposed rocky edges of forest streams in the montane zone above 1400 m a.s.l. Flowering from January to February.

Cross-line Wave Moth (Traminda aventiaria)

Location - Kukulugala

External Links - http://www.inaturalist.org/listed_taxa/3413860

Crimson sage (Salvia coccinea)

An introduced herb native to Mexico. Widely cultivated in home gardens. Flowering throughout the year. Sometimes escaped and naturalized near gardens. Flower color and size variable and occurs in bright red, white and pink.

ඇත් තෝර[Eth thora] (Cajanus trinervius[Atylosia trinervia])

Very common erect shrub occurs in the open patanas of the montane zone from 900 to1800 m a.s.l. Flowering throughout the year. 

Tawny Rajah (Charaxes psaphon)

Rather uncommon butterfly flies all over the island except in the higher hills. It is much common in the dry zone especially during the south-west monsoon and scarce in the wet zone. Both sexes especially males settle on wet patches, bird droppings, decaying animal matters and rotting fruits. It is a very fast flier and also take part in migrations. Hill-topping phenomena is also observed of male Tawny Rajas*. According to the sources females are rarely seen, since they are less active and preferring to sit deep in the foliage. Larva feeds on Entada zeylanica, Tamarindus indica (සියඹලා/Tamarind/Indian Date), Dalbergia pseudo-sissoo (බඹර වැල්),  Entada rheedei (පුස් වැල්) and Croton laccifer (ගස්-කැප්පෙටියා). Egg laying observed on Miliusa tomentosa and  Actinodaphne stenophylla (නික දවුල) and larva fed on Aglaia elaeagnoidea when offered in the lab.

* Male flying up to and staying on a hill top waiting for females.

Toothache Plant (Acmella oleracea)

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

වැල් කොහිල [Wel kohila]/Fivefingers (Syngonium angustatum)

Native plant of Central America. Introduced as an ornamental and now naturalized from lowlands to about 1000 m elevations. Also often grown as a pot plant due to its arrow shaped variegated juvenile foliage leaves with silvery along main veins. Adults leaves of climbing stem are much more lobed (3-9 leaflets) and to keep juvenile leaves it is advised to cut-off all the climbing stems that developed.

නෙළු[Nelu] (Strobilanthes lupulina)

Rather common indigenous undershrub of southwestern wet zone forests from 75 to 1800 m altitude. 

Lyrate Grappletail (Heliogomphus lyratus)

In June 1926 G,M, Henry collected a single male and female of this very rare and probably seasonal dragonfly from the Haldummulla. F.C. Fraser later on described it as a new Gomphidae species endemic to the Sri Lanka base on those specimens. For over 80 years till in May 2009 Matjaz Bedjanic's records of single male in Kitulgala and a female in Morawaka-Diyadawa road on the slopes of Diyadawa forest, that was the sole available information of this species.
  We could observe and photograph a Male and female on early April of 2015 at a small well shaded stream of Kukulugala proposed forest reserve in the Ratnapura district. Female was oviposting in a small water hole of the stream during our observation and male when disturbed rapidly flew directly upward up to certain height.

* Another single male observed end of May 2015 while settled on a leaf along the roadside from Athweltota to Rusigala in Kaluthara district, a rather disturbed and open habitat comparing to the all of above locations.

References:

de Fonseka, T. (2000). The dragonflies of Sri Lanka. Wildlife Heritage Trust: Colombo. 304 p. 

Fraser F.C. 1933 The Gomphines of Ceylon (Order Odonata), F.C. Fraser, Ceylon Journal of Science (B) Vol. XVIII, Pt 1 December 22, 1933 page 33 

Bedjanic, M., K. Conniff, N. van der Poorten & A. Salamun, 2014. Dragonfly fauna of Sri Lanka: Distribution and biology, with threat status of its endemics. Pensoft, Sofia. 321pp.

බුරුල්ල/ගුරුල්ල[Burulla/Gurulla]/Bandicoot berry (Leea indica)

Common indigenous shrub or small tree occurs in lower elevations of both wet and dry zones. Flowering from October to March.

හීන් කටුපිල [Hin katupila] (Flueggea leucopyrus)

An indigenous shrub occurs in scrublands and thorn-scrubs from sea level up to 150 m a.s.l. Leaves used in medicine. 

Justicia hookeriana

An endemic shrub common along shady rocky stream banks in wet lowland forested areas. Often occurs in water. Flowering from February to September. 

රන් පිළිහුඩුවා[Ran Pilihuduwa]/Black-backed Kingfisher[Oriental Dwarf/Three-toed Kingfisher](Ceyx erithaca erithaca)

An uncommon breeding resident locally occurs from lowlands to mid hills. It encounters solitary or as pairs in shady streams, river banks and ponds in forests and adjasent  well wooded home gardens. Oriental Dwarf Kingfisher feeds on fishes, freshwater crabs and frogs. Its breeding season is from March to April. The nesting burrow is dug in a stream bank or similar earth bank and it lays 2-3 white eggs inside the inner chamber of it. 

කිඹුල්වැන්න[Kibulwenna]/Alligator weed (Alternanthera philoxeroides)

Native herb of Brazil and Argentina. Invasive in Australia, China, New Zealand,Thailand and USA. In 1995 it was found that Alligator weed has been growing in home gardens of  the Sri Lankan community in Australia as a vegetable by mistake*.  Later on somehow it was introduced to the Sri Lanka and now an invasive weed in several areas, growing in dense masses in shallow water.

* Invasive Plants - A guide to the identification of the most invasive plants in Sri Lanka, Lalith Gunasekara

Coleus/Painted nettle (Plectranthus scutellarioides)

Native perennial herb of Eastern Asia and Malaysia. Extensively cultivated from lowlands to hills in gardens owing to its variable (Usually combinations of red, brown, pink, green and yellow ) brightly colored leaves. Flowering throughout the year. 

Redflame (Strobilanthes reptans [Syn: Hemigraphis reptans])

Introduced procumbent herb native to Melanesia of the eastern Pacific. It grows in moist soil in shade or partial sun. Cultivated in gardens and possibly also escaped and naturalized along roadside ditches. 

Christisonia tricolor

Leafless endemic herb, parasitic on roots of mainly Acanthaceae and bamboo species. It occurs in lower montane forests up to about 1550 m a.s.l in Mathale, Kandy, Rathnapura and Nuwaraeliya districts.