From Botanica's Orchids : Psygmorchis is a genus of about four species that range from Mexico to Brazil. They grow as twig ephiphytes, particularly in trees overhanging water, from sea level to about 4 700 ft. 

The plants are small and fan-shaped with flattened leaves that overlap at the base. The inflorescence arises laterally and the flowers open one at a time.

These plants art short lived, and they should be mounted on twigs or small slabs.

Psygmorchis pusilla (photos) is a widespread species that ranges from Mexico and the West  Indies to Guyana, Bolivia and Brazil. The plant lacks pseudobulbs and the leaves are up to about 2 in. long.

Several flowers are produced in succession from the same inflorescence. These are large in proportion to the size of the plant, up to 1 in. long. Flowers appear throughout the year but espacially from spring to autumn.