Aerangis biloba keiki?
I didn't know they even did this. I have a keiki growing at the end of a spent spike on my Aerangis biloba. I tend to just leave the spent spikes on there until they look like they will come off easily, and in any case, I haven't done that much maintenance on this case in a while anyway. Looks like maybe that turned out to be a good thing? I was adjusting the lights because both biloba and mystacidii are going orange in a major way, and checking for snails, and I saw the keiki. Fascinating.