Any baby plant that starts up off an orchid can be called a keiki, I think. I have two keikis on my big Angreacum, one on a Vanda, and a big one on a Epidendrum that I got in Apopka, as well.
We used to propagate rhododendrons in my mother's garden by just pinning a lateral branch down to the ground and letting it take root. That method is certainly called "layering" but maybe not "air layering". If you did that with a phal baby, I don't see why this wouldn't be called air layering, too. Just because you don't have to wrap it in moss and plastic, the plant forms new leaves and roots up in the air on its own, it's not "air layering" ?
