Promenaea stapelioides

The Promenaeas are all cool growing, lower light species from Brazil.  This species, my favorite, is named for its flowers' resemblance to the flowers of a Stapelia plant.  The plant is 8 cm tall with bluish-green leaves, small pseudobulbs and large 4 cm flowers.  I grow it in live sphagnum in a plastic net pot and keep it moist with high humidity.