Some time ago we made a cross with Rlc. Tsiku Luisita as the seed parent and C. Cinnabrosa as the pollen parent.
All offspring has the extremely small column of C. cinnabarina and some of the plants have a similar lip shape than Amey's plant.
In my opinion it could be C. Charlesworthii.
At least C. cinnabarina is one of the parents.