වට්ටක්කා [Wattakka]/Pumpkin gourd/Squash gourd (Cucurbita maxima)

 
An introduced  trailing or climbing tall annual herb widely cultivated in all climatic zones.  The wild ancestor of this species is native to South America.

Zehneria thwaitesii [Syn: Neoachmandra deltoidea]

An indigenous slender climber with tendrils occurs in wet forests up to 1800 m elevations. 

කැකිරි[Kekiri]/Melon (Cucumis melo)

An indigenous or introduced herb with climbing or creeping stems. Widely cultivated for its edible fruits. Also escaped and naturalized in waste places.

ගොං කැකිරි/හීං කැකිරි/ලේන කැකිරි/කැකිරි [Gon-Kekiri/Heen Kekiri/Lene Kekiri/Kekiri]/Rough bryony/Madras pea pumpkin (Cucumis maderaspatanus [Syn: Mukia maderaspatana])

An indigenous slender climber with tendrils, common in both wet and dry lowlands, often as a weed in waste places, grasslands, river margins and cultivation. Flowering all the year round.

කරවිල/බටු කරවිල[Karawila/Batu karawila](Momordica charantia)

An indigenous climbing herb occurs in lowland rain forests, riverine forests and cultivated areas up to 1200 m a.s.l. Fruit use in curries and pickles. Several cultivated varieties are used as vegetables.

Trichosanthes scabra [Syn: Gymnopetalum scabrum/Gymnopetalum integrifolium]

Largely creeping and climbing native annual herb common in the waste places of dry and intermediate zones up to about 200 m altitude. Flowers opening in the evening. 

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. 

දුම්මැල්ල/කුනුමැල්ල/පතෝල[Dum-mella/Kunu-mella/Pathola]/Snake Gourd (Trichosanthes cucumerina)

Common indigenous climbing herb grows in low country, mainly in dry zone. Trichosanthes anguina (Snake Gourd/Pathola) - cited as synonymy of T. cucumerina -  is a common cultivated vegetable with much larger fruits. 

කෝවක්කා[Kowakka]/Ivy gourd(Coccinia grandis)

A common perennial climber grows in woodlands, forest borders and open areas from sea level to about 800m in low country, especially in dry zone. Indigenous and flowering from June to September. Leaves edible and both fruit and leaves are used in snake-bite treatments. 

A Revised Handbook to the Flora of Ceylon - Volume 10 (v. 10)