Such a pretty Stelis; both the plant and the flowers.
My Aerangis dropped a couple of buds as they started to swell. They were all closest to the plant so it doesn't show up on the spike. I was thinking that would be related to a need for very consistent moisture/humidity. I was told when I got mine that they prefer closer to 70% and try not to go under 60%. Perhaps that accounts for the different bloom times too. Mine's been spiking since November which seems like an awfully long time. Here it is today.