This spectacular specimen was exhibited at the 2016 convention of the Gesneriad Society. For scale, the pot is probably at least 8″ in diameter.
The beautiful flowers are born on a very long flowering stem. The flowers are very fragrant, as well as beautifully shaped and of a very clear white. Note the “keyhole” opening (more visible in the flower close-up below), which when taken with the white color, the fragrance and the length of the tube, indicates likely pollination by a moth with a long proboscis.
Additional photos may be seen in a slide-show by clicking one of the links below.