Phalaenopsis violacea var. alba.

I purchased this species as a tiny seedling and it has been in bloom off and on for several years now, as is characteristic of the species, which blooms on long lasting flower spikes that produce only one flower at a time but do so over many years.  The ordinary form of this species has purple coloring especially on the lower parts of the flower, but this is a colorless form or alba.  Phalaenopsis violacea is from Malaysia and Sumatra.