Promenaea xanthina is a miniature orchid from Brazil that produces an abundance of lovely yellow flowers when well grown. It belongs to a genus of about fourteen species, all from Brazil. The plant have angled pseudobulbs and soft greyish-green leaves, two per pseudobulb. The flowers are produced from the base of the pseudobulbs and the plants generally prefer cool temperatures.
My plant of this species is 8-10 cm tall and the flowers are 5 cm in size, a bright clear yellow with some spotting at the base of the lip and column. They open widely and have a very typical "orchid" shape. My plant blooms in early summer and is grown in a plastic net pot and live sphagnum and seem to bloom best when the plant is undisturbed and beginning to overflow its pot.