Arundina graminifolia

One of the very common orchids you can find growing in gardens. You might chance upon them in our local national parks.

With only 200 of the plant to be recorded growing naturally in Singapore, the species is close to extinction there, largely caused by the destruction of its natural habitat, namely the rainforests and mangrove forests. The remaining plants, commonly called Tapah weeds, can be found in the secondary forests or at the forest fringes. (extracted from wikipedia)