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Wrightia antidysenterica
Small, white flowers, with thin, woody stems.
Kalibo, Aklan
Philippine Sampaguita flower is a white, star-shaped blossom which has a sweet fragrance. It opens at night and droops in less than a day. The white flowers are often made into wreath and its extract made into perfumes. Sampaguita is not a tree but a woody vine. The flower called was accepted as the National Flower of Philippines in 1934 which also happens to be the National Flower of Indonesia.
This one looks like it could be an orchid of some sort, However, I am not a plant expert for wild plants in the Philippines. I would start with searching local orchids and see what you can come up with.