Pholidota imbricata

Coelogyne imbricata, commonly known as the common rattlesnake orchid or necklace orchid, is a plant in the orchid family and is a clump-forming epiphyte or lithophyte with crowded pseudobulbs. Each pseudobulb has a single pleated, leathery leaf and up to sixty white, cream-coloured or greenish, cup-shaped flowers in two ranks along a wiry flowering stem. There is a large, papery bract at the base of each flower. This species is native to areas from tropical and subtropical Asia to the southwest Pacific....read more on Wikipedia.