Elytraria acaulis

Common indigenous herb occurs under shade in damp places from lowlands to hills. Flowering throughout the year.
*Flower size - About 0.3 cm across.

Five bar Swordtail (Pathysa antiphates ceylonicus)

One of the rarest butterfly of the island. It is confine to the few localities in the southwestern wet lowland forests. Where also it occurs probably in a certain period of the year, roughly from January to end of March. Few earlier records also available from the dry zone especially from the Uva province.  Five bar Swordtail usually flies around midday. Therefore it is also known as "12 O' clock fly". Males often settle on wet patches in stream beds and jungle paths as well as the decaying animal matters.  No larval host plants have been discovered of it from Sri Lanka.

කුකුළු වැල්[Kukulu wel] (Calamus radiatus)

An endemic rattan occurs in forest understorey of southwestern wet lowlands below 1000 m altitude in Kalutara and Galle districts. Flowering from February to March. 

Jasminum grandiflorum

An introduced shrub native to Southwest Asia. Cultivated in home gardens. 

Torch ginger (Etlingera elatior[Nicolaia elatior])

Native plant of Malaysia. Cultivated occasionally in home gardens, especially in Kandy and Peradeniya area.

කහ අඬනහිරියා [Kaha Andanahiriya] (Crotalaria retusa)

Common indigenous large herb occurs in waste grounds, roadsides and near seashore. Sometimes also cultivated in gardens. Roots and leaves occasionally use in medicine though plant is reported as poisonous. 

Lemon Pansy (Junonia lemonias vaisya)

Common butterfly flies everywhere up to about 2000 ft. It is very common in the dry zone and local and scarce in the wet zone. It takes part in migrations. Larva feeds on Barleria prionitis (කටු කරඬු/Yellow Hedge Barleria),  Hygrophila auriculata (ක‍ටු ඉකිරි/නීරමුල්ලිය), Lindernia rotundifolia, Dyschoriste madurensis, Dyschoriste nagchana, Rungia repens (සුළු නයි/Creeping rungia), Ruellia prostrata (නිල් පුරුක්)  and Barleria lupulina (රන්වන් කටු කරඩු).

Ludwigia hyssopifolia

An introduced herb with origin uncertain. Common in open wet disturbed sites such as stream banks, ditches, paddy field & tanks margins, rock crevices and openings in dry and wet zone forests from sea level to 200 m altitudes. 

බිම් බෙරු [Bim-Beru ] (Acrotrema walkeri)

An endemic perennial herb, locally common in the wet montane forests from 610 to 1300 m altitude. Acrotrema walkeri can be easily distinguished from other 6 species of the genus occurs in Sri Lanka (All endemic) by usually having pale-white area along the mid rib and primary veins of the leaves. 

ඇම්බැරැල්ලා[Ambarella](Spondias dulcis)

An introduced tree presumably introduced into Southeast Asia from the Society islands. Commonly cultivated in home gardens. Fruit edible and whole plant medicinal.

False Eranthemum (Pseuderanthemum maculatum [Syn: Pseuderanthemum carruthersii])

Introduced ornamental shrub cultivated in gardens. Native of Polynesia. Flowering throughout the year.
Two varieties cultivated in Sri Lanka.

1) variety atropurpureum [or Pseuderanthemum  atropurpureum - now a synonym of Pseuderanthemum carruthersii*]- Above picture
2) variety reticulatum with white flowers with red dotted center [or Pseuderanthemum reticulatum* now a synonym of Pseuderanthemum carruthersii]

*  http://www.theplantlist.org/tpl1.1/record/kew-2406673

Horanpella cinnamomea ?

Location - Dothalugala - Knuckles range

Expanse - 10 cm

Reference - The Lepidoptera of Ceylon - F. Moore, F.Z.S. Vol 3 Page 544- 545.

හාතාවාරිය [Hathawariya] (Asparagus falcatus)

An indigenous rambling and scandent shrub occurs in wet, dry and intermediate zones below 1500 m a.s.l. Flowering from July to October. Young shoots and tubers edible and tuberous roots are used in medicine. 

කටු අනෝදා/කටු ආත්තා/රට අනෝදා [Katu anoda/Katu atta/Rata anodha]/Soursop (Annona muricata)

An introduced small tree cultivated in home gardens for its edible fruits. Native to West Indies.

කෙකටිය[Kekatiya] (Aponogeton rigidifolius)

An endemic aquatic herb with submerged leaves, distributed in slow or fast flowing streams and rivers in Kalutara, Rathnapura and Galle districts of the southwestern wet lowlands.

Common Jay (Graphium doson)

Common butterfly widely distributed throughout the country except in the far north. Males often settle in large numbers on wet patches on gravel roads, river beds, etc. It takes parts in migrations and sometimes flies in great numbers. The larva feeds on Polyalthia cerasoides [Patta-Ul-Kenda/පට්ට උල්කෙන්ද], Polyalthia korinti [Mi-Wenna, Ul-Kenda/මීවැන්න/උල් කෙන්ද], Uvaria macropoda and Miliusa indica*[Kekili-Messa/කැකිලිමැස්ස] of the family Annonaceae

* Larva fed on tender leaves and flowers only in the lab.

Mandarin's hat/Chinese hats/Chinese Umbrellas/Cup & Saucer/Parasol flower/Sombrero flower (Holmskioldia sanguinea)

Straggling shrub or small tree native to subtropical Himalayan region of Pakistan and India. Introduced as an ornamental plant to Sri Lanka and cultivated in gardens. 

Purple-bean (Macroptilium atropurpureum)

Trailing or twining herb native to tropical America. Probably introduced as a cover crop and now naturalized along roadsides, waste places, etc.

හුණු කිරිල්ල[Hunu kirilla] (Glochidion zeylanicum)

Rather common native tree occurs along forest borders, open sunny exposed slopes and wet and dry savanna or patana areas from sea level to about 1000 m altitudes. 

Earpod wattle (Acacia auriculiformis)

Introduced tree cultivated as an ornamental. Native to Australia, New Guinea and Indonesia.