Ursula you are vvvvery close! This is Rossioglossum Aztec Fire. No grande in this cross so it is blooming in July and is temp tolerant. This is R schileperianum x R williamsianum, a much smaller flower, it's about 3in. I also have R Rawdon Jester but knocked the spike off yesterday, this cross is R grande x R williamsianum so a cool x intermediate makes it temp tolerant also. I'll post a filled out Aztec Fire tomorrow here.
I see that they are on ebay right now in spike.
Jim, I knew you would know this!