A dendrobe with no name

This is one of my more obscure orchids around, which I believe came to the collection as a small division about seven years ago. I have no provenance data, so I really do not know where it came from. I tried identifying it using my digital copies of Philippine orchid types, but the plant did not really match any of the dendrobes. That leaves the possibility that this is a species still unknown to science, or perhaps it also occurs from outside the Philippines. Nonetheless, this is a very easy going species, fully exposed to the elements and highly resistant to fluctuating climatic conditions. The stems have no pseudobulbous bases, but the function of storage organs is taken out by the knife-like, fleshy leaves. The upper portions of the stems are bare and on their nodes are where the small blooms are produced.

This should give you an idea of the size of the flowers:

The flowers do not open widely, pure white except for some purple lines on the side lobes and a dark yellow callus. The labellum margins are fringed. As is usual for species from this group, the flowers are short-lived, but sweetly fragrant.

This plant flowers anytime throughout the year, with major flushes after heavy rains preceded by a prolonged dryness. I believe it's very rarely represented in local collections, although I gave a nice, established division to a friend last year. As often happens to many of our orchids, and orchids from other countries too, this should be present in some private collections abroad- thanks (or no thanks) to local nurseries who would rather sell their plants outside the countries of origin.