I thought I only had white flowers
I've had several epis (not sure if that's what the one in the 1st 2 pics is) for a number of years and never really paid much attention to them. Every year I'd see the same white flowers. This year I guess some others decided to finally bloom. As soon as I saw the buds I knew they weren't white flowers. I have no idea what finally prompted them to bloom. I've had these for at least 4 years, probably longer.