Papilinanthe teres, with whtie and pinkish purple flowers blooms in March-April. The lowland evergreen forest was quite extensive in the past, but owing to increasing economic development at present only remnants of this forest-type are scattered over the country, confined to waterways and at the peripheries of either national parks or wildlife sanctuaries. The main tree species belong to the dipterocarpaceous and the leguminous families. The white-flowered Shorea henryana, is one of the common species distributed all over the country, blooming from March to April. A few palms are also frequent, e.g. Licuala sp. , and Kerriodoxa elegans .
Epiphytic orchids are abundant.
Bruguiera sexangula, a tree, 15-20 m. tall with hanging reddish flowers. In drier habitats the structure of the forest becomes more open, and diptercapaceous species are preponderant, the trees shed their leaves completely during the hot dry season and flower from November to April. The evergreen trees are few such as the yellow-flowered Dillenia ovata, and Quercus kerrii. Among the forest type already described there occur quite a number of parasitic plants on trees or roots, some of which have beautiful flowers. M.platyphyllus with bright yellow flowers on the para rubber tree in the lowlands at about 20 m., blooming in March-April.