Aeschynanthus humilis 'Topaz'
(formerly A. hildebrandii 'Topaz')

Photo by Dale Martens  
Grown Lyndon Lyon Greenhouse 

This yellow form of A. humilis provides an interesting contrast to the more commonly seen orange form.  Lyndon Lyon Greenhouses won the award "Best Other Gesneriad" at the 1997 convention of the African Violet Society of America for this plant.