වෙල් රුක් අත්තන[Wel-ruk-attana]/Golden trumpet/Yellow allamanda(Allamanda cathartica)

Widely cultivated plant in home gardens and also naturalized in the wet zone and in the hill country. It is a native plant of Brazil and introduced as an ornamental plant due to its attractive yellow flowering throughout the year.  Variety hendersonii bear large flowers with about 10cm across while it is about 6cm of the other.