Here is a link to Ron Myhr's gesneriad page. It doesn't say much, but here it is. Have you done a google on A. punctata? There are a lot of entries. Maybe you can get your question answered there.
JohnnieB- wasn't there an article written(local D.C. paper?) about your backyard garden a year or so ago? If I am remembering correctly, it was GORGEOUS!
I bet there was--he has posted pictures periodically, and I definitely agree. He is also the hybridizer of Chirita 'Blue Moon', which is blooming now in my back yard and is also gorgeous. Thank you, Johnnie_B, and for your other beauties, and for your regular help on these forums.
JohnnieB
larry_b
GrowHappy
greenelbows1