Aeschynanthus humilis 'Topaz'
(formerly A. hildebrandii'Topaz')
Photo by Ron Myhr
Grown by Paul Sorano, Lyndon Lyon Greenhouses
A very nicely grown example of this pretty variant of the species, this plant won best in class and section at the 2002 AGGS show. The photo misrepresents the color slightly -- in real life it is less lemon-yellow, with just a touch of orange.
The more common standard form of the species can be seen here.