පණු අල/පොළොං අල [Panu Ala/Polon Ala] (Typhonium roxburghii)

 An indigenous herb of wet zone and lower hill country. Rather rare.

Typhonodorum lindleyanum

An introduced large aquatic herb native to the Madagascar. Cultivated at the Peradeniya Botanical garden.

Spathiphyllum cannifolium

Native herb of tropical America. Introduced as an ornamental and cultivated in gardens. Possibly also naturalized in shaded places.  Flowering throughout the year.

Tail flower/Flamingo flower/Laceleaf (Anthurium andraeanum)

Widely cultivated ornamental pot plant native to Colombia and Ecuador. 

ගහල[Gahala]/Taro/Elephant's ear (Colocasia esculenta)

An introduced large herb probably with Southeast Asian origin. Now pan-tropically cultivated and also escaped and naturalized in open wet places. Very common from lowlands to intermediate altitude throughout the country. Its underground stem edible and many edible and ornamental cultivars exist. It is considered as an invasive since dense stand of wild Taro displace native flora and block waterways, canals and invade rice fields in the wet zone. 

Kris plant (Alocasia sanderiana)

Globally critically endangered plant naturally found only in two locations, namely Bukidnon and Misamis Occidental (Mindanao Island) of the Philippine. Widely cultivated as an ornamental pot plant in gardens. Not naturalized.

පෝටා වැල් [Pota wel] (Pothos scandens)

Very common indigenous climber with roots that attach to tree trunks and rocks. Found in the wet and intermediate lowlands and lower hills. Flowering on hanging branches.

කෙතල/කෙටල[Kethala/Ketala] (Lagenandra praetermissa)

An endemic large herb locally common along streams, rivers and rivulets from lowlands to mid hills.  

Devil's ivy/Pothos/Money plant (Epipremnum aureum)

An introduced ornamental  climber native to the Solomon islands. Cultivated and also escaped and naturalized in the lowlands to hill country forests. Rarely flowering.

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.

Elephant ear (Caladium bicolor)

Native herb of South America. Introduced as an ornamental foliage and escaped and naturalized in the lowland open disturbed areas, especially in rubber plantations.

Lagenandra koenigii

An endemic semi-aquatic herb occurs in small streams and wet places in the wet zone rain forests. 

Dumbcane (Dieffenbachia seguine)

An introduced large herb native to tropical South America. Cultivated as an ornamental foliage plant and also naturalized in wet places like ditches and canals in the wet lowlands.

වල් - කිඩාරම් [Wal-Kidaram] (Arisaema leschenaultii)

Rather rare indigenous herb found in shady places in the hill country. The "flower" is hooded with the green spathe protecting the interior, which contains the true flowers from the rain. 

කොහිල/ඇඟිලි කොහිල/මහ කොහිල[Kohila/Engili-Kohila/Maha-Kohila] (Lasia spinosa)

A native herb grows in marshy places in moist low lands. It is also cultivated since inside of stems and tender leaves are used in curries.

Flower – Greenish brown to dark purple twisted spathe of 20-55 cm long. It is half open at the base.

දිය පරඩැල්/Diya-paradel/Water lettuce (Pistia stratiotes)

Common native floating herb found in low country tanks, ponds and rice fields. Occasionally found also in brackish water ponds.